02213nas a2200241   4500008004100000022001400041245018400055210006900239260000800308490000700316520131500323653002201638653001801660653001401678653001901692653001901711100002701730700002101757700002101778700002001799700003001819856012201849       2023                        eng d  a1861-472800aSelective and generic photocatalytic oxidation of alcohol with Pd-TiO2 thin films: butanols to butanal/butanone with different morphologies of Pd and 0.5 theta(Pt)-Pd counterparts0 aSelective and generic photocatalytic oxidation of alcohol with P  cMAR0 v183 a<p>The present study reports on the photocatalytic oxidation of butanols to butanal/butanone using thin film form of facet-dependent nano-Pd supported on commercial TiO2 under one-sun condition and demonstrates the generic nature. Pd-nanocube (Pd-NC(100)), Pd-truncated octahedron (Pd-TO (100) and (111)), polycrystalline (Pd-PC), and their counterparts with half-a-monolayer Pt-coated on Pd (0.5 theta(Pt)-Pd)) have been used as co-catalyst. A potentially scalable thin film form of Pd/TiO2 photocatalyst, prepared by drop-casting method, has been employed to study oxidation of n-butanol, 2-butanol, and iso-butanol to corresponding aldehyde/ketone. 100% selectivity is demonstrated to respective aldehyde/ketone with any catalyst used in the present study with varying degree of butanols conversion by NMR. 0.5 theta(Pt)-Pd-TO/TiO2 shows the highest conversion of 2-butanol to butanone (13.6% in 4 h). Continuous 10 h of reaction with the most active 0.5 theta(Pt)-Pd-TO/P25 catalyst demonstrates 31% conversion of 2-butanol to butanone, and catalyst recyclability has been demonstrated. The present protocol can be scalable to large scales to maximize the conversion in direct sunlight. Due to its generic nature, the current method can also be applied to many other alcohols and substrate molecules.</p>
10aenergy conversion10aNanomaterials10aOxidation10aPhotocatalysis10aSustainability1 aSalgaonkar, Kranti, N.1 aKale, Sandip, R.1 aNalajala, Naresh1 aMansuri, Sayana1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/selective-and-generic-photocatalytic-oxidation-alcohol-pd-tio2-thin-films-butanols02989nas 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<p>
	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 (&gt;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.</p>
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