02336nas a2200277 4500008004100000022001400041245011600055210006900171260000800240300001600248490000700264520140800271653002001679653002401699653001801723653002301741653000801764100002101772700002701793700002601820700001901846700002201865700001701887700002801904856012601932 2022 eng d a0272-884200aRu, Pd doped WO3 nanomaterials: a synergistic effect of noble metals to enhance the acetone response properties0 aRu Pd doped WO3 nanomaterials a synergistic effect of noble meta cJUN a17923-179330 v483 a

Noble metals (NMs) have an enormous impact on the intrinsic properties of the metal oxides. We report the synergistic effect of Ruthenium (Ru) and Palladium (Pd) noble metals on the enhancement of gas sensing properties of pure tungsten oxide (WO3). The gas sensing material is synthesized by simple and straight forward precipitation route, and its physico-chemical analyses are determined using XRD, FESEM, TEM/HRTEM, FFT, UV-Vis, XPS, EDAX, and BET measurements. Use of the developed material as a gas sensor is evaluated using several target gases (oxidizing as well as reducing), with acetone showing the best selectivity. The noble metal doping and hence catalytic action improved the gas response qualities. The synergistic effect of Ru and Pd on WO3 gas response properties are identified, where the effect is 99.80% sensitivity, and lower response/recovery time (10 s and 2 min) at 300 degrees C operating temperature. Nonetheless, the sensors displayed better gas sensing properties even at lower operating temperatures ranging from 200 to 275 degrees C. In addition, the synergistic effect has displayed the dramatic enhancement in the sensitivity to 76.44% at barely 10 ppm acetone concentration. This particular result will undoubtedly be helpful for diagnostic purpose of diabetic patients, and a strong candidate for prospective gas sensing applications, particularly acetone.

10aAcetone vapours10aPrecipitation route10aRu -Pd doping10asynergistic effect10aWO31 aKodam, Pavan, M.1 aGhadage, Pandurang, A.1 aNadargi, Digambar, Y.1 aShinde, K., P.1 aMulla, Imtiaz, S.1 aPark, J., S.1 aSuryavanshi, Sharad, S. uhttps://library.ncl.res.in/content/ru-pd-doped-wo3-nanomaterials-synergistic-effect-noble-metals-enhance-acetone-response02037nas a2200229 4500008004100000022001400041245008500055210006900140260000800209300000900217490000700226520126700233100002601500700002301526700002601549700002301575700002201598700001601620700003101636700002801667856011201695 2023 eng d a0957-452200aGreen synthesis of GO-loaded Ag/ZnO nanocomposites for methyl orange degradation0 aGreen synthesis of GOloaded AgZnO nanocomposites for methyl oran cJUL a15680 v343 a

Nature is a perfect laboratory for creating novel nanomaterials for a variety of applications. A robust green synthesis approach to GO-loaded Ag/ZnO nanocomposite materials using medicinal plant extraction and their potential application in methyl orange dye degradation are reported. The straightforward technique employs zinc and silver nitrate precursors in an aqueous solution of medicinal plant extract, causing the precipitation process. Prior to photocatalytic investigations, the physico-chemical properties of the material are analysed using TG-DTA, XRD, FE-SEM, TEM, EDAX and BET. The developed material showcase hexagonal wurtzite structure of ZnO, with face-centered-cubic phase of Ag and AgCl. All the samples exhibit aggregated, irregular rounded grains, as expected in the precipitation synthesis process. Pristine ZnO showed 15.5% degradation efficiency towards methyl orange, which was further improved by doping Ag from 0.5 to 2 mol%. The catalyst with 1 mol% Ag doping resulted in the better photocatalytic activity (26.30%), which has again improved by loading the GO (27.46%). The outcome of this study provides the new insights to GO-loaded Ag/ZnO nanocomposites by green synthesis route, in view of photocatalytic applications.

1 aNadargi, Digambar, Y.1 aNadargi, Jyoti, D.1 aTamboli, Mohaseen, S.1 aTamboli, Asiya, M.1 aMulla, Imitaz, S.1 aUmar, Ahmad1 aTruong, Nguyen, Tam Nguyen1 aSuryavanshi, Sharad, S. uhttps://library.ncl.res.in/content/green-synthesis-go-loaded-agzno-nanocomposites-methyl-orange-degradation00962nas a2200277 4500008004100000022001400041245008000055210006900135260000900204300001600213490000600229653002300235653003600258653002500294100002100319700002200340700002600362700002400388700002300412700002800435700002200463700002600485700003100511700002800542856011400570 2024 eng d a2470-134300aLa-Fe-O perovskite based gas sensors: recent advances and future challenges0 aLaFeO perovskite based gas sensors recent advances and future ch cJUL  a29994-300140 v910aASSISTED SYNTHESIS10aETHANOL SENSING CHARACTERISTICS10aLAFEO3 NANOPARTICLES1 aPatil, Suraj, S.1 aBabar, Bapuso, M.1 aNadargi, Digambar, Y.1 aShaikh, Faiyyaj, I.1 aNadargi, Jyoti, D.1 aSankapal, Babasaheb, R.1 aMulla, Imtiaz, S.1 aTamboli, Mohaseen, S.1 aTruong, Nguyen, Tam Nguyen1 aSuryavanshi, Sharad, S. uhttps://library.ncl.res.in/content/la-fe-o-perovskite-based-gas-sensors-recent-advances-and-future-challenges02490nas a2200217 4500008004100000245013500041210006900176260000900245300001600254490000700270520166700277100002401944700002101968700002601989700002702015700002602042700002302068700002202091700002802113856013102141 2025 eng d00aSurfactant-assisted tungsten oxide for enhanced acetone sensing and solar-driven photocatalysis: exploring the role of surfactants0 aSurfactantassisted tungsten oxide for enhanced acetone sensing a cAUG  a27895-279070 v153 a

Surfactants play a pivotal role in the kinetics of nucleation and accretion of nanoparticles in such a way that they serve as a template for the development of nanostructures, consequently influencing the morphology, dimensions, and other surface properties. Herein, we report the influence of cationic and anionic surfactants (CTAB, SDS, PVP and HMT) on the development of pristine WO3 nanostructures and their impact on gas sensing and photocatalytic properties of WO3. The various surfactant-assisted WO3 nanostructures were synthesized via a straightforward hydrothermal route and systematically analyzed using XRD, FESEM-EDAX, TEM/HRTEM, XPS, UV-Vis, and BET measurements. Gas sensing properties of various oxidizing and reducing gases revealed superior selectivity towards acetone. Among the various surfactant-assisted WO3, CTAB/WO3 exhibited an excellent response of 84.84% towards 100 ppm acetone at an optimal operating temperature of 300 degrees C. The CTAB/WO3 sensor exhibited a linear response to acetone at lower concentrations, showing a 4.8% response at 0.8 ppm, which delineates the threshold between healthy and diabetic breath acetone levels. At 1.8 ppm, the sensor recorded 8.1% response, aligning with diabetes values reported by National Institute for Occupational Safety and Health (NIOSH). Moreover, photocatalytic performance evaluations demonstrated a methylene blue degradation efficiency of 47.19% under natural solar irradiation. This work will motivate researchers in developing high performance acetone gas sensors and photocatalytic dye-degradation by the integration of appropriate surfactants in WO3 nanostructures.

1 aPatil, Abhijeet, P.1 aPatil, Suraj, S.1 aTamboli, Mohaseen, S.1 aDamkale, Shubhangi, R.1 aNadargi, Digambar, Y.1 aNadargi, Jyoti, D.1 aMulla, Imtiaz, S.1 aSuryavanshi, Sharad, S. uhttps://library.ncl.res.in/content/surfactant-assisted-tungsten-oxide-enhanced-acetone-sensing-and-solar-driven-photocatalysis