02563nas a2200265 4500008004100000022001400041245013200055210006900187260000900256300001000265490000700275520167700282653001801959653001501977653002201992653002702014653001302041100002202054700002102076700001602097700002402113700001702137700002202154856012102176 2015 eng d a0920-506300aFluorescent cadmium telluride quantum dots embedded chitosan nanoparticles: a stable, biocompatible preparation for bio-imaging0 aFluorescent cadmium telluride quantum dots embedded chitosan nan cJAN  a42-560 v263 a

Fluorescent cadmium telluride quantum dots (CdTe QDs) are an optically attractive option for bioimaging, but are known to display high cytotoxicity. Nanoparticles synthesized from chitosan, a natural biopolymer of beta 1-4 linked glucosamine, display good biocompatibility and cellular uptake. A facile, green synthetic strategy has been developed to embed green fluorescent cadmium telluride quantum dots (CdTe QDs) in biocompatible CNPs to obtain a safer preparation than `as is' QDs. High-resolution transmission electron microscopy showed the crystal lattice corresponding to CdTe QDs embedded in CNPs while thermogravimetry confirmed their polymeric composition. Electrostatic interactions between thiol-capped QDs (4nm, -57mV) and CNPs (\~300nm, +38mV) generated CdTe QDs-embedded CNPs that were stable up to three months. Further, viability of NIH3T3 mouse fibroblast cells in vitro increased in presence of QDs-embedded CNPs as compared to bare QDs. At the highest concentration (10 mu g/ml), the former shows 34 and 39% increase in viability at 24 and 48h, respectively, as compared to the latter. This shows that chitosan nanoparticles do not release the QDs up to 48h and do not cause extended toxicity. Furthermore, hydrolytic enzymes such as lysozyme and chitinase did not degrade chitosan nanoparticles. Moreover, QDs-embedded CNPs show enhanced internalization in NIH3T3 cells as compared to bare QDs. This method offers ease of synthesis and handling of stable, luminescent, biocompatible CdTe QDs-embedded CNPs with a favorable toxicity profile and better cellular uptake with potential for bioimaging and targeted detection of cellular components.

10aBiocompatible10abioimaging10aCdTe quantum dots10achitosan nanoparticles10aToxicity1 aGhormade, Vandana1 aGholap, Haribhau1 aKale, Sonia1 aKulkarni, Vaishnavi1 aBhat, Suresh1 aPaknikar, Kishore uhttps://library.ncl.res.in/content/fluorescent-cadmium-telluride-quantum-dots-embedded-chitosan-nanoparticles-stable02396nas a2200241 4500008004100000245010500041210006900146260000800215300001400223490000600237520156300243653002501806653001701831653003201848653002501880100002501905700001701930700001801947700001701965700002101982700002002003856013102023 2016 eng d00aSynthesis and characterization of novel polymer-hybrid silver nanoparticles and its biomedical study0 aSynthesis and characterization of novel polymerhybrid silver nan cJUN a1949-19570 v33 a

Hybrid polymer metal nanoparticles have advantages over conventional metal nanoparticles with respect to their stability, chemical resistance, antibacterial activity and drug delivery properties. In the current work, we have synthesized novel stimuli-responsive polymer hybrid silver nanoparticles using green synthesis method, where the plant extract is used as a reducing agent in the synthesis. Encapsulating metal nanoparticles with stimuli-responsive soft-polymeric system is novel and provides additional versatility whose functions and properties can be tailored by controlling any of the stimuli such as pH, temperature, ionic strength with respect to their antibacterial activity and physiological condition. Moreover, green synthesis methods have advantages over conventional methods involving chemical reducing agents that are often associated with environmental toxicity because of their enhanced antibacterial and other biological effects. The synthesized hybrid particles were characterized using Dynamic light scattering, UV-Visible spectroscopy and Small angle x-ray scattering. Further, we have investigated the antibacterial and cytotoxicity effect of these hybrid particles against different bacterial cells ( Salmonella) and mammalian cell lines (HCT116) respectively. These results are discussed in the light of previous studied work and these results suggest that our synthesized polymer hybrid nanoparticles are more antibacterial and less cytotoxic than the usual silver nanoparticles. (C) 2015Elsevier Ltd.All rights reserved.

10aAntibacterial effect10aCytotoxicity10aPolymeric hybrid particless10asilver nanoparticles1 aVerma, Suresh, Kumar1 aJha, Ealisha1 aKiran, K., J.1 aBhat, Suresh1 aSuar, Mrutyunjay1 aMohanty, P., S. uhttps://library.ncl.res.in/content/synthesis-and-characterization-novel-polymer-hybrid-silver-nanoparticles-and-its-biomedical02279nas a2200361 4500008004100000022001400041245009100055210006900146260000800215490000600223520110800229653001501337653002901352653001601381653005301397653001901450653002401469653003501493653000701528653002601535653001601561100002401577700002701601700002101628700002101649700001801670700002201688700001701710700002301727700002301750700002501773856011901798 2017 eng d a2050-748800aLow-dimensional hybrid perovskites as high performance anodes for alkali-ion batteries0 aLowdimensional hybrid perovskites as high performance anodes for cSEP0 v53 a

State-of-the-art Li (or Na) ion batteries work by insertion/extraction of the alkali metal ions into a porous electrode material, where the overall capacity is strongly dependent on the accessibility of the host material interior to the ions. On the other hand, the performance stability depends on various factors governed by the specific constitution of the electrode. Here we show that molecularly engineered low-dimensional hybrid perovskites can work as excellent anode materials for alkali-ion batteries. We measure a high reversible capacity of 646 mA h g(-1) at 100 mA g(-1) with good stability tested up to 250 cycles for the benzidine mediated lead iodide based 1D system. An ex situ analysis of the electrodes reveals that the storage primarily occurs via the Li-x(or Na-x)Pb alloying/de-alloying process. We anticipate that these results open a new direction for the use of low-dimensional hybrid perovskites for energy storage applications.

10aGeneration10aInorganic-Organic Hybrid10aLead Iodide10alithiation-intramolecular electrophilic reaction10aNa-Air Battery10aNegative Electrodes10aOrganometal Halide perovskites10aPB10aSequential Deposition10aSolar-cells1 aTathavadekar, Mukta1 aKrishnamurthy, Shrreya1 aBanerjee, Aparna1 aNagane, Satyawan1 aGawli, Yogesh1 aSuryawanshi, Anil1 aBhat, Suresh1 aPuthusseri, Dhanya1 aMohite, Aditya, D.1 aOgale, Satishchandra uhttps://library.ncl.res.in/content/low-dimensional-hybrid-perovskites-high-performance-anodes-alkali-ion-batteries02065nas a2200241 4500008004100000022001400041245008000055210006900135260000800204300000800212490000700220520134200227653001801569653002401587653001101611653001401622653000901636100001801645700001701663700001701680700001901697856010701716 2019 eng d a1530-993200aMapping fusogenicity of ciprofloxacin-loaded liposomes with bacterial cells0 aMapping fusogenicity of ciprofloxacinloaded liposomes with bacte cJUL a1800 v203 a

The process of liposome fusion with cellular membrane plays key role in delivering encapsulated drug molecule into the cell. This process becomes very important for molecules having low permeability as they fail to reach the site of action located inside the cell. Ciprofloxacin (CIP), a broad-spectrum BCS class IV antibiotic, has poor permeability. In the present work, CIP-loaded liposomes were prepared using solvent evaporation method and optimized by 3(2) factorial design approach. The optimized batch of CIP-loaded liposomes was characterized for size, entrapment efficiency, zeta potential, FTIR, and microbial susceptibility study on Staphylococcus aureus (gram-positive bacteria) and Escherichia coli (gram-negative bacteria). Confocal microscopy was used to study the fusogenicity process of CIP-loaded liposomes with bacterial cells. Additionally, the kinetics of fusogenicity process was studied using SAXS for the first time. Surprisingly, the rate of fusion of CIP-loaded liposomes with cell wall of S. aureus was twice when compared to the cell wall of E. coli. It is believed that the current work can act as a roadmap in selection of proper excipients while developing formulations which would expedite the fusogenicity and may execute pharmacological activity of poorly penetrable drug molecules at lower dose.

10aciprofloxacin10aconfocal microscopy10afusion10aliposomes10aSAXS1 aPatil, Runali1 aTorris, Arun1 aBhat, Suresh1 aPatil, Sharvil uhttps://library.ncl.res.in/content/mapping-fusogenicity-ciprofloxacin-loaded-liposomes-bacterial-cells01845nas a2200157 4500008004100000022001400041245010300055210006900158260000800227300001000235520123900245100003401484700002701518700001701545856012501562 2019 eng d a0021-899500aRole of particle morphology in the yielding behavior of dense thermosensitive microgel suspensions0 aRole of particle morphology in the yielding behavior of dense th cOCT a486253 a

The yielding behavior of dense thermosensitive microgel suspensions of poly(N-isopropylacrylamide) with two different particle morphologies viz core-shell (CS) morphology and particles with uniform crosslink density were studied. Structural properties were examined using dynamic light scattering and yielding behavior was investigated by nonlinear oscillatory rheology. Suspensions of particles with uniform crosslinking density showed a typical hard sphere like behavior with the loss modulus (G `') exhibiting a single peak due to cage breaking while CS type particles shows a double yielding at different ranges of strain similar to that seen in attractive colloidal glasses. The first yielding process in CS microgels is interpreted as due to the disentanglement of the overlapped polymer chains from the shells of the neighboring microgels and the second yielding process due to the breakage of cages formed by neighboring microgel particles. Current study suggests that the interpenetration of polymer chains at high concentrations sets in an attractive like potential leading to double yielding phenomena in an otherwise purely repulsive system. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48625.

1 aJathavedan, Kiran, Kaithakkal1 aKanheerampockil, Fayis1 aBhat, Suresh uhttps://library.ncl.res.in/content/role-particle-morphology-yielding-behavior-dense-thermosensitive-microgel-suspensions02442nas a2200193 4500008004100000245014400041210006900185260000900254300001600263490000700279520172200286100001702008700002302025700002002048700001702068700001602085700002102101856012602122 2020 eng d00aEnteric pH responsive cargo release from PDA and PEG coated mesoporous silica nanoparticles: a comparative study in Drosophila melanogaster0 aEnteric pH responsive cargo release from PDA and PEG coated meso cMAR  a11716-117260 v103 a

Physiological stimulus-specific cargo release from nanoparticle carriers is a holy grail of drug delivery research. While the majority of such work is carried out in vitro with cell lines, widespread use of common mammalian model systems - mice and rats - is difficult due to the associated cost and regulatory restrictions. Here we use the inexpensive, easily reared, excellent genetic model system Drosophila melanogaster to test pH responsive cargo release from widely used mesoporous silica nanoparticles (MSNs) coated with pH sensitive polydopamine (PDA) and polyethylene glycol (PEG) polymers. We synthesized 650 +/- 75 nm diameter PDA or PEG coated mesoporous silica nanoparticles loaded with a fluorescent dye and fed to individual adult flies. Subsequently, the passage of the particles were monitored through the fly gut. As in mammals, the fly intestine has multiple pH specific zones that are easily accessible for imaging and also genetic, biochemical or physiological manipulations. We observed that both the species of MSNs ruptured around the acidic (pH < 4.0) middle midgut of the flies. PEG coated particles showed sharper specificity of release in the acidic middle midgut of flies than the PDA coated ones and had less tendency to clump together. Our results clearly show that the Drosophila gut can be used as a model to test pH responsive biocompatible materials in vivo. Our work paves the way for greater use of Drosophila as an in vivo complete systemic model in drug delivery and smart materials research. It also suggests that such specific delivery of chemical/biological cargo can be exploited to study basic biology of the gut cells and their communication with other organs.

1 aSapre, Nidhi1 aChakraborty, Rusha1 aPurohit, Poorvi1 aBhat, Suresh1 aDas, Gaurav1 aBajpe, Sneha, R. uhttps://library.ncl.res.in/content/enteric-ph-responsive-cargo-release-pda-and-peg-coated-mesoporous-silica-nanoparticles01933nas a2200193 4500008004100000020001400041245008400055210006900139260000800208300001600216490000700232520135200239100002501591700001701616700001701633700002301650700001901673856004701692 2021 eng d a2191-164900aResveratrol loaded cubic phase nanoparticles with enhanced oral bioavailability0 aResveratrol loaded cubic phase nanoparticles with enhanced oral  cDEC a1108 - 11180 v113 aResveratrol (RES), a naturally occurring hydrophobic polyphenolic compound, has shown potential anticancer activity. However, due to low aqueous solubility and extensive first pass metabolism (primarily by cytochrome enzymes), it shows poor oral bioavailability. In the present work, novel RES loaded cubosomes of glycerol monooleate (GMO) and Gelucire 44/14 (GL44) (RES-Cubs) were prepared. RES-Cubs were prepared by emulsion evaporation technique and optimized using 32 factorial design. The optimized RES-Cubs were assessed for particle size, zeta potential, entrapment efficiency, FTIR, TEM, SAXS, in vitro resveratrol release and oral bioavailability. RES-Cubs showed an average particle size of 121.7 ± 2.54 nm with adequate entrapment efficiency of about 82.0 ± 2.35% w/w. The analysis of SAXS profile of RES-Cubs revealed Pn3m crystallographic space group containing diamond cubic phase. In vitro RES release profile of RES-Cubs exhibited markedly sustained release of resveratrol. Furthermore, RES-Cubs demonstrated considerable enhancement in oral bioavailability (ninefold) of resveratrol as compared to RES alone. The developed RES loaded cubosomes bearing cytochrome enzyme inhibitor property can act as promising nanocarrier in the delivery of lipophilic drugs with a drawback of in vivo degradation by cytochrome enzymes.1 aRawat, Neeraj, Kumar1 aTorris, Arun1 aBhat, Suresh1 aMahadik, Kakasaheb1 aPatil, Sharvil uhttps://doi.org/10.1007/s12668-021-00892-902123nas a2200193 4500008004100000245010300041210006900144260000800213300001600221490000700237520143400244100001801678700002001696700001401716700001701730700002301747700002701770856013201797 2021 eng d00aRigidity dictates spontaneous helix formation of thermoresponsive colloidal chains in poor solvent0 aRigidity dictates spontaneous helix formation of thermoresponsiv cDEC a19702-197110 v153 aThe formation of helical motifs typically requires specific directional interactions. Here, we demonstrate that isotropic interparticle attraction can drive self-assembly of colloidal chains into thermo-reversible helices, for chains with a critical level of backbone rigidity. We prepare thermoresponsive colloidal chains by cross-linking PNIPAM microgel-coated polystyrene colloids (“monomers”), aligned in an AC electric field. We control the chain rigidity by varying cross-linking time. Above the LCST of PNIPAM, there is an effective attraction between monomers so that the colloidal chains are in a bad solvent. On heating, the chains decrease in size. For the most rigid chains, the decrease is modest and is not accompanied by a change in shape. Much less rigid chains form relatively compact structures, resulting in a large increase in the local monomer density. Unusually, chains with intermediate rigidity spontaneously assemble into helical structures. The chain helicity increases with temperature and plateaus above the collapse transition temperature of the microgel particles. We simulate a minimal model that captures the spontaneous emergence of the helical conformations of the polymeric chain and provides insight into this shape transition. Our work suggests that a purely mechanical instability for semiflexible filaments can drive helix formation, without the need to invoke directional interactions.1 aBiswas, Bipul1 aMitra, Debarshi1 aKP, Fayis1 aBhat, Suresh1 aChatterji, Apratim1 aKumaraswamy, Guruswamy uhttps://library.ncl.res.in/content/rigidity-dictates-spontaneous-helix-formation-thermoresponsive-colloidal-chains-poor-solvent02016nas a2200205 4500008004100000022001400041245018000055210006900235260000800304300001600312490000700328520121400335100001801549700002701567700002101594700002701615700001701642700002401659856012701683 2023 eng d a2050-748800aElectrode|electrolyte interface enhancement in quasi-solid-state zinc-air batteries through an anion conducting polymer electrolyte interlayer by in situ polymerization0 aElectrodeelectrolyte interface enhancement in quasisolidstate zi cJUL a14776-147870 v113 a

This work introduces a novel concept of electrode|electrolyte interface enhancement using an ultraviolet (UV) light-assisted in situ polymerization strategy to improve the performance of quasi-solid-state zinc-air batteries (ZABs). The suitability of the UV polymerization strategy to process a mechanically stable OH- conducting anion exchange polymer electrolyte membrane (AEPEM) reinforced by a glass fiber (GF) separator is also reported. The in situ polymerized ionomer-skin/interlayer (a thin anion-conducting polymer coating over the air-cathode of ZAB) acts as a buffer layer to narrow down the performance gap generally observed between ZABs possessing quasi-solid-state electrolytes and standard liquid electrolytes, respectively. For instance, when combined with the in situ polymerization strategy, a rechargeable ZAB (rZAB) based on an AEPEM-GF composite membrane delivered a high power density of 140 mW cm(-2), higher than that of the one without an in situ polymerized ionomer interlayer (120 mW cm(-2)). Notably, in a flexible rZAB configuration, this new strategy resulted in enhanced rate capability and cycling stability for 14 h at an operating current density of 2 mA cm(-2).

1 aKurian, Maria1 aVijayakumar, Vidyanand1 aManna, Narugopal1 aKanheerampockil, Fayis1 aBhat, Suresh1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/electrodeelectrolyte-interface-enhancement-quasi-solid-state-zinc-air-batteries-through03001nas a2200301 4500008004100000022001400041245008700055210006900142260000900211300001100220490000800231520202600239653002902265653002202294653002102316653003402337653003402371100001902405700002802424700002602452700001702478700001602495700002102511700001702532700002102549700002302570856010602593 2023 eng d a0167-732200aPolymerized stimuli-responsive microgels for the removal of organic dye from water0 aPolymerized stimuliresponsive microgels for the removal of organ cAPR  a1212670 v3753 a

Polymerized hydrogel materials (PGM) containing uniform-sized stimuli-responsive microgel particles could be promising alternatives for solution-based microgels to remove organic dyes from water. In the current work, PGM is prepared using Poly(N-isopropylacrylamide-co-acrylic acid) based anionic microgels and their ability for uptake and release studies with an oppositely charged dye, methylene blue (MB) is carried out using UV-vis spectroscopy. The mechanism of dye adsorption is understood at a single particle level using light scattering, and zeta potential and the contributions from different molecular interactions among dye molecules and constituting entities of microgels are obtained from molecular docking studies. The maximum dye uptake by PGM is around 80 % in the swollen state (at pH 7 and 20 degrees C). In contrast, the dye release studies in the deswollen state (at pH 3 and 50 degrees C) show a decrease in the release efficiency from 87 % to 63 % of the total dye adsorbed in 4-repeated cycles. The adsorption isotherm follows a sigmoidal (S) model that has been majorly used in different multi-layer adsorption systems. Extensive dynamic and static light scattering studies demonstrate a deswelling of hydrody-namic radius and core-shell radius of microgels at low temperatures (20 degrees C) induced by dye adsorption. At higher temperatures, the dye-adsorbed microgels have a higher hydrodynamic radius than the pure microgels due to the remaining dye molecules within the microgel that do not release even in the deswollen state. Molecular docking studies show that electrostatic interaction dominates between COO- and MB and van der Waals/hydrophobic dominates for MB-NIPAM and MB-COOH docking complex respectively. Our work covering adsorption/desorption properties of the material to the single-particle level can provide a better understanding in formulating reusable smart materials for the remediation of different water pollutants.(c) 2023 Elsevier B.V. All rights reserved.

10adynamic light scattering10aMolecular docking10aPNIPAM microgels10aRemoval of organic pollutants10aStimuli -responsive microgels1 aPany, Biswajit1 aMajundar, Amrito, Ghosh1 aMohanty, Madhuchhanda1 aFyis, K., P.1 aDey, Tanima1 aTripathy, Gautam1 aBhat, Suresh1 aYamanaka, Junpei1 aMohanty, Priti, S. uhttps://library.ncl.res.in/content/polymerized-stimuli-responsive-microgels-removal-organic-dye-water02558nas a2200265 4500008004100000245013000041210006900171260000800240300001100248490000700259520160800266653002101874653002701895653002701922653002101949653003601970653003302006100001902039700002802058700001702086700001802103700002102121700002302142856012702165 2024 eng d00aPolymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction0 aPolymerized stimuliresponsive microgel hybrids of silver nanopar cMAR ae262440 v103 a

We have showcased the potential of polymerized hydrogels (PGMs) with uniform -sized stimuliresponsive microgel particles as promising alternatives to prevent aggregation in solution based nanoparticle systems. In the current work, we implemented the PGM concept by embedding anionic stimuli -responsive microgels (PNIPAM-co-AAc)-silver (Ag) hybrids within a hydrogel matrix. These PGM@AgNP hybrid materials are used as catalysts for the reduction of 4-nitrophenol (4 -NP) to 4-aminophenol (4 -AP) in the presence of sodium borohydride. UV-VIS spectroscopy is used for studying catalytic activity. In the solution based system, the complete reduction of 4NP to 4 -AP took 30 minutes with pure Ag nanoparticles, 24 minutes with PNIPAM-Ag hybrid (Neutral) microgels and 15 minutes with PNIPAM-co-AAc-Ag (Anionic) hybrid microgels. In contrast PGM containing PNIPAM-co-AAc-Ag hybrids achieved full reduction in just 15 minutes, along with a 3 -minute induction period. For pure Ag nanoparticles, the first -order rate constant is found to be 0.25 min - 1, for PNIPAM-Ag hybrid (Neutral), it is 0.21 min- 1 and for PNIPAM-coAAc-Ag (Anionic), it is 0.5 min- 1 where as for PGM containing anionic microgel hybrids it is found to be 0.8 min - 1. Furthermore, the reusability of the PGM-Ag (anionic) materials for catalytic activity remains unaltered even after several washings. In summary, our study highlights the effectiveness of PGM@AgNP materials as efficient catalysts for the reduction of 4-nitrophenol to 4-aminophenol, indicating their versatile potential in various catalytic applications.

10aLight scattering10aMicrogel-metal hybrids10aNanomaterial catalysts10aPNIPAM microgels10aPolymerized hydrogel matrix(PGM10aStimuli-responsive microgels1 aPany, Biswajit1 aMajumdar, Amrito, Ghosh1 aBhat, Suresh1 aSi, Satybrata1 aYamanaka, Junpei1 aMohanty, Priti, S. uhttps://library.ncl.res.in/content/polymerized-stimuli-responsive-microgel-hybrids-silver-nanoparticles-efficient-reusable02278nas a2200217 4500008004100000022001400041245010000055210006900155260000900224300001600233490000700249520151500256100001901771700001701790700002701807700001701834700004001851700001701891700002401908856012801932 2025 eng d a2050-748800aAnode|electrolyte|cathode interface engineering to develop a robust zinc metal hydrogel battery0 aAnodeelectrolytecathode interface engineering to develop a robus cDEC  a41105-411210 v133 a

The poor electrode-electrolyte interfaces in quasi-solid-state zinc metal batteries often hinder Zn2+ ion transport due to the poor compatibility of the gel electrolyte with the electrodes. This report proposes a dual-interface engineering strategy across the anode, cathode, and separator using a single hydrogel polymer electrolyte (HPE). The integration of vanadyl phosphate functionalized carbon nanotubes (VP/fCNT) into a commercial glass fiber (GF) separator, followed by a thin hydrogel coating and UV-light photopolymerization, resulted in a dual-interface engineered cathode-separator-electrolyte structure (VP/IC-EGF). To mitigate the dendritic growth, an artificial solid electrolyte interface was developed on Zn foil (AEI@Zn). The engineered GF (EGF) demonstrates a room-temperature conductivity of 6.5 mS cm-1 and a high electrochemical stability window of 2.4 V vs. Zn|Zn2+. The symmetric cell with AEI@Zn|EGF|AEI@Zn exhibits exceptional plating/stripping stability over 1400 h at a current density of 0.1 mA cm-2 and a capacity of 0.1 mAh cm-2. Moreover, the low-volume cell (AEI@Zn & Vert;VP/IC-EGF), featuring the dual-interface-engineered cathode-separator-electrolyte, demonstrates outstanding cycling stability with over 3000 charge-discharge cycles at a current rate of 1.0 A g-1, retaining 98-99% of its initial capacity and showing high coulombic efficiency. These findings underscore the significant impact of interface engineering on enhancing the performance of ZMBs.

1 aDilwale, Swati1 aBabu, Athira1 aKanheerampockil, Fayis1 aTorris, Arun1 aPuthiyaveetil, Priyanka, Pandinhare1 aBhat, Suresh1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/anodeelectrolytecathode-interface-engineering-develop-robust-zinc-metal-hydrogel-battery02408nas a2200277 4500008004100000022001400041245016800055210006900223260000800292490000600300520146300306653000801769653001801777653001701795653000801812653000801820100001801828700002001846700002401866700003001890700002301920700002101943700001701964700002401981856012502005 2025 eng d a2366-748600aSelf-supported super-hydrophilic interconnected nanospikes and particles of MoS2-Ni3S2/NF with optimum d-band center for anion exchange membrane water electrolyzer0 aSelfsupported superhydrophilic interconnected nanospikes and par cMAR0 v93 a

There is an imperative need for highly efficient electrocatalysts for cost-effective hydrogen production. Herein, a self-supported, hybrid composite as a bifunctional electrocatalyst is introduced. This is achieved by in situ growth of MoS2-Ni3S2 on nickel foam (NF), designated as MoS2-Ni3S2/NF, synthesized by a facile one-step hydrothermal synthesis method. MoS2-Ni3S2/NF exhibits low overpotentials of only 187 and 146 mV for OER and HER, respectively, to achieve a current density of 10 mA cm-2 in 1 M KOH. The practical application of the designed bifunctional electrocatalyst is verified by constructing the MoS2-Ni3S2/NF || MoS2-Ni3S2/NF symmetrical membrane electrode assembly (MEA) of 4 cm2 working area for the anion exchange membrane water electrolyzer. The system shows continuous electrolysis for the monitored 48 h duration. For OER, an optimum d-band center of -1.66 eV for the heterostructure is calculated from the Density Functional Theory (DFT) studies. The factors like the unique structure of the electrocatalyst, enhanced hydrophilicity, improved electrochemically accessible number of sites (ECASs), and optimum d-band center, are expected to be the primary contributors to the system's improved performance. Thus, the present finding unveils a straightforward synthesis approach for creating a stable electrocatalyst for advancing commercial water electrolysis in the realm of renewable electrochemical energy conversion.

10aAEM10ad-band center10aelectrolyzer10aHER10aOER1 aKumar, Yogesh1 aBarik, Sidharth1 aSamudre, Nikhil, S.1 aKharabe, Geeta, Pandurang1 aChauhan, Inderjeet1 aManna, Narugopal1 aBhat, Suresh1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/self-supported-super-hydrophilic-interconnected-nanospikes-and-particles-mos2-ni3s2nf02691nas a2200289 4500008004100000022001400041245019800055210006900253260000800322490000700330520153400337653002401871653004501895653003601940653004601976100004002022700002602062700002402088700003302112700001702145700002902162700001702191700002302208700002602231700002402257856012002281 2026 eng d a1614-683200aSelf-healing hydrogel electrolyte enabled by dynamic polar covalent and noncovalent interactions for high-performance rechargeable zinc-metal batteries: a leap toward sustainable energy storage0 aSelfhealing hydrogel electrolyte enabled by dynamic polar covale cJAN0 v163 a

Hydrogel polymer electrolytes with superior multifunctional properties are promising alternatives to aqueous electrolytes for resolving interfacial issues in rechargeable zinc-metal batteries. In this study, an intrinsic self-healing hydrogel polymer electrolyte (PHBC-4) is synthesized, engineered through an integrated approach involving the polar covalent (B & horbar;O bond), hydrogen-bond (polyvinyl alcohol-hydroxypropyl methylcellulose interface), and coordination-type (Zn & horbar;O) interactions to enable self-healing functionality. The PHBC-4 has demonstrated high ionic conductivity (4.6 x 10-2 S cm-1), good oxidative stability (2.3 V vs Zn|Zn2+), a high cation transference number (0.89), superior tensile strength (0.32 MPa), and an impressive healing efficiency of 93% achieved just within 5 min, confirming its robust self-healing capability. In Zn||Zn symmetric cells, it effectively suppresses dendrite growth, ensuring stable cycling for over 1032 h with an areal capacity of 1.0 mAh cm-2 at a current density of 1.0 mA cm-2. When paired with a Zn-doped MnO cathode in the rechargeable homemade pouch cell, the system delivers a high specific capacity of 160 mAh g-1 at 0.10 A g-1 and cycling stability up to 493 charge-discharge cycles at 2.0 A g-1. The self-healing ability of PHBC-4 HGPE is confirmed in a homemade pouch cell via OCV and charge-discharge tests, demonstrating stable performance. The DFT studies confirm molecular-level interactions within the hydrogel heterostructure.

10adendrite inhibition10aflexible rechargeable zinc metal battery10ahigh cation transference number10aself-healing hydrogel polymer electrolyte1 aPuthiyaveetil, Priyanka, Pandinhare1 aKurian, Rachna, Maria1 aSamudre, Nikhil, S.1 aBalasubramanian, Rajalakshmi1 aTorris, Arun1 aPockil, Fayis, Kanheeram1 aBhat, Suresh1 aAjithkumar, T., G.1 aKrishnamurty, Sailaja1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/self-healing-hydrogel-electrolyte-enabled-dynamic-polar-covalent-and-noncovalent