13210nas a2200169 45000080041000002450122000412100069001632600028002324900009002605201253400269100001812803700002612821700001412847700002112861700002612882856013212908 2020 eng d00aPhotocatalytic hydrogen production from H2S using nanostructured CNT blended CdZnS/Fe2O3 thin film on glass substrate0 aPhotocatalytic hydrogen production from H2S using nanostructured bIOP Publishing LtdcMAR0 v14953 a

A co-precipitation method was employed to prepare the CNT blended CdZnS/Fe2O3 photocatalyst. Using the powder photocatalyst, the thin film of CNT blended CdZnS/Fe2O3 photocatalyst over a glass substrate was prepared using the drop-casting method. The obtained thin film was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDAX), photoluminescence (PL), and hydrogen production activity studies in order to obtain information on their structural, morphology, chemical composition, optical and hydrogen production efficiency. The hydrogen production activity of catalyst or effective conversion of H2S into hydrogen (H2) and sulfur (S) using thin-film photocatalyst was evaluated using a simulated sulfide solution. The results showed that 1 mg of CNT blended CdZnS/Fe2O3 catalyst coated as thin film over glass substrate (4.69 cm2) showed the highest hydrogen production value of 3180 μmol h−1g−1; compared to that of 1 mg CNT blended CdZnS/Fe2O3 powder of 2510 μmol h−1g−1. From the above results, it is concluded that the thin film form of photocatlyst produced more hydrogen than the powder form. This is attributed to the effective charge separation and increased specific surface area in thin film photocatalyst.

1 aRaja, Anthony1 aVijayarengan, Preethi1 aPal, Yash1 aNalajala, Naresh1 aGopinath, Chinnakonda uhttps://library.ncl.res.in/content/photocatalytic-hydrogen-production-h2s-using-nanostructured-cnt-blended-cdznsfe2o3-thin-film02083nas a2200241 4500008004100000022001400041245012200055210006900177260000800246300001400254490000700268520123300275653002501508653003401533653001501567653002601582653002501608653001401633100003001647700002101677700001901698856012401717 2021 eng d a0959-810300aPolyaryletherketone in energy conversion and storage devices - a highly tailorable material with versatile properties0 aPolyaryletherketone in energy conversion and storage devices a h cAUG a1026-10370 v703 a

Polymers have been a highly useful class of material for the last few decades owing to their ease of bulk production and fabrication. With the myriad of applications in day to day life, they have also found an important role in energy conversion and storage devices, not just as a housing material of the device but with an important role in the energy conversion process. Among the several polymers used in this area, polyaryletherketones (PAEKs) are one of the most versatile materials owing to their easy tailorability. The ether and ketone groups can be introduced in the main polymer chain in several ways to achieve the desired material properties. The main role of a polymer in an energy conversion device is that of a barrier to avoid the mixing of reactants and to selectively transport ions from one electrode to the other to maintain charge neutrality. The polymer membrane finds application in various electrochemical energy conversion devices such as fuel cells, lithium ion batteries, redox flow batteries, supercapacitors etc. The main focus of this work is to briefly review the extent of development in the PAEKs in various energy conversion and storage devices. (c) 2021 Society of Industrial Chemistry.

10aelectrolyte membrane10aenergy conversion and storage10afuel cells10alithium ion batteries10aredox flow batteries10aseparator1 aSaleha, Wasim, Feroze Goo1 aNalajala, Naresh1 aNeergat, Manoj uhttps://library.ncl.res.in/content/polyaryletherketone-energy-conversion-and-storage-devices-highly-tailorable-material01482nas a2200277 4500008004100000022001400041245012100055210006900176260000800245300001200253490000700265520056300272653001000835653001400845653001900859653002000878100002400898700002000922700001900942700001700961700002000978700002100998700003001019700002301049856013201072 2023 eng d a0909-049500aPhotocatalytic setup for in situ and operando ambient-pressure X-ray photoelectron spectroscopy at MAX IV Laboratory0 aPhotocatalytic setup for in situ and operando ambientpressure Xr cMAY a613-6190 v303 a

The Ambient-Pressure X-ray Photoelectron Spectroscopy (APXPS) endstation at the SPECIES beamline at MAX IV Laboratory has been improved. The latest upgrades help in performing photo-assisted experiments under operando conditions in the mbar pressure range using gas and vapour mixtures whilst also reducing beam damage to the sample caused by X-ray irradiation. This article reports on endstation upgrades for APXPS and examples of scientific cases of in situ photocatalysis, photoreduction and photo-assisted atomic layer deposition (photo-ALD).

10aAPXPS10aphoto-ALD10aPhotocatalysis10asolar simulator1 aKlyushin, Alexander1 aGhosalya, Manoj1 aKokkonen, Esko1 aEads, Calley1 aJones, Rosemary1 aNalajala, Naresh1 aGopinath, Chinnakonda, S.1 aUrpelainen, Samuli uhttps://library.ncl.res.in/content/photocatalytic-setup-situ-and-operando-ambient-pressure-x-ray-photoelectron-spectroscopy-max02861nas a2200241 4500008004100000022001400041245018000055210006900235260000900304300001600313490000700329520193900336100002602275700002002301700002602321700001702347700003002364700002602394700002102420700001902441700003302460856012602493 2023 eng d a1463-907600aPossible handle for broadening the catalysis regime towards low temperatures: proof of concept and mechanistic studies with CO oxidation on surface modified Pd-TiO20 aPossible handle for broadening the catalysis regime towards low  cAUG  a22040-220540 v253 a

The present work demonstrates the effect of temperature-dependent surface modification (SM) treatment and its influence in broadening the catalysis regime with Pd-TiO2 catalysts prepared by various methods. Due to SM induced changes, a shift in the onset of CO oxidation activity as well as broadening of the oxidation catalysis regime by 30 to 65 K to lower temperatures is observed compared to the temperature required for virgin counterparts. SM carried out at 523 K for Pd-Photo-TiO2 exhibits the lowest onset (10% CO2 production - T-10) and T-100 for CO oxidation at 360 and 392 K, respectively, while its virgin counterpart shows T-10 and T-100 at 393 and 433 K, respectively. The SMd Pd-TiO2 catalysts were investigated using X-ray photoelectron spectroscopy (XPS), ultra-violet photoelectron spectroscopy (UPS) and atomic force microscopy (AFM). It is observed that diffusion of atomic oxygen into Pd-subsurfaces leads to SM and changes the nature of the surface significantly. These changes are demonstrated by work function (& phi;), surface potential, catalytic activity, and correlation among them. UPS results demonstrate the maximum increase in & phi; by 0.5 eV for Pd-Photo-TiO2 after SM, compared to all other catalysts. XPS study shows a moderate to severe change in the oxidation states of Pd due to atomic oxygen diffusion into the subsurface layers of Pd. Kelvin probe force microscopy (KPFM) study also reveals corroborating evidence that the surface potential increases linearly with increasing temperature deployed for SM up to 523 K, followed by a marginal decrease at 573 K. The & phi; measured by KPFM and UPS shows a similar trend and correlates well with the changes in catalysis observed. Our results indicate that there is a strong correlation between surface physical and chemical properties, and & phi; changes could be considered as a global marker for chemical reactivity.

1 aMhamane, Nitin, B. B.1 aPanchal, Suresh1 aKolekar, Sadhu, K. K.1 aRanjan, Ravi1 aSalgaonkar, Kranti, N. N.1 aBurange, Anand, S. S.1 aNalajala, Naresh1 aDatar, Suwarna1 aGopinath, Chinnakonda, S. S. uhttps://library.ncl.res.in/content/possible-handle-broadening-catalysis-regime-towards-low-temperatures-proof-concept-and02989nas a2200277 4500008004100000022001400041245016400055210006900219260000800288300001100296490000800307520198800315653002502303653002102328653002202349653001902371100002302390700002802413700002902441700002102470700001802491700001802509700002602527700003002553856012802583 2026 eng d a1385-894700aPotential tuneable glucose oxidation to selective C6 molecules and CC cleavage, and parallel green H2 production: sustainable high current density electrolysis0 aPotential tuneable glucose oxidation to selective C6 molecules a cFEB a1726330 v5293 a

Current study elucidates the electrocatalytic efficacy of palladium-nanocubes (Pd-NCs) for the selective oxidation of glucose to value-added chemicals with concomitant hydrogen evolution. The Pd-NC catalyst demonstrated exceptional activity and product selectivity, achieving nearly quantitative glucose conversion (>99 %) with high gluconic and glucaric acid yield at low anodic overpotential (0.6 V vs. RHE) in alkaline electrolyte. At not-so-high elevated potentials (1.2 V vs. RHE), oxidative CC scission prevails, yielding shorter-chain carboxylates along with C6-acids. Reaction products are thoroughly characterized and quantitatively estimated by NMR spectral methods; NMR methods also provide CC cleavage and mechanistic pathways of glucose to various products. Complementary DFT calculations delineate the thermodynamic favorability of glucose adsorption on Pd-NC surfaces (-1.83 eV) and the exergonic oxidation pathway under applied bias, corroborating experimental product distributions. In a two-electrode electrolyzer, Pd-NC anode paired with Pt/C and Ni2P cathode demonstrates 100 mA/cm(2) at 0.99 V and 1.37 V, respectively, with 48 % reduction in energy input (26.6 kWh/kg H-2) compared to conventional alkaline electrolysis; critically, H-2 production energy is lower than the usable energy (33.3 kWh/kg H-2). Sustainable chronopotentiometric assays confirm sustainability (similar to 140 h) in alkaline as well as saline electrolytes, underscoring the system's resilience against chloride-mediated corrosion. Present work establishes a proof of concept for integrated biomass-component valorization and carbon-negative green hydrogen production, merging atomic-level mechanistic insights with scalable reactor design. Optimization of reaction parameters, including potential tuning, reaction temperature and electrolyte engineering, offers a compelling strategy to further enhance C6 and fragmented product selectivity and overall system efficiency.

10abiomass valorization10aelectrocatalysis10aenergy conversion10aSustainability1 aChauhan, Inderjeet1 aPatra, Kshirodra, Kumar1 aVijay, Pothoppurathu, M.1 aNalajala, Naresh1 aMehta, Shweta1 aJoshi, Kavita1 aRavindranathan, Sapna1 aGopinath, Chinnakonda, S. uhttps://library.ncl.res.in/content/potential-tuneable-glucose-oxidation-selective-c6-molecules-and-cc-cleavage-and-parallel