02538nas a2200289   4500008004100000022001400041245014400055210006900199260000900268300001600277490000700293520157100300653002101871653001301892653001901905653001301924653001401937653000801951100002301959700002101982700001802003700002302021700001902044700002802063700003002091856012702121       2024                        eng d  a1944-824400aElectrocatalytic glycerol conversion: a low-voltage pathway to efficient carbon-negative green hydrogen and value-added chemical production0 aElectrocatalytic glycerol conversion a lowvoltage pathway to eff  cMAY   a26130-261410 v163 a<p>
	Electrochemical glycerol oxidation reaction (GLYOR) could be a promising way to use the abundantly available glycerol for production of value-added chemicals and fuels. Completely avoiding the oxygen evolution reaction (OER) with GLYOR is an evolving strategy to reduce the overall cell potential and generate value-added chemicals and fuels on both the anode and cathode. We demonstrate the morphology-controlled palladium nanocrystals, afforded by colloidal chemistry, and their established morphology-dependent GLYOR performance. Although it is known that controlling the morphology of an electrocatalyst can modulate the activity and selectivity of the products, still it is a relatively underexplored area for many reactions, including GLYOR. Among nanocube (Pd-NC), truncated octahedron (Pd-TO), spherical and polycrystalline (Pd-PC) morphologies, the Pd-NC electrocatalyst deposited on a Ni foam exhibits the highest glycerol conversion (85%) along with 42% glyceric acid selectivity at a low applied potential of 0.6 V (vs reversible hydrogen electrode (RHE)) in 0.1 M glycerol and 1 M KOH at ambient temperature. Owing to the much favorable thermodynamics of GLYOR on the Pd-NC surface, the assembled electrolyzer requires an electricity input of only similar to 3.7 kWh/m(3) of H-2 at a current density of 100 mA/cm(2), in contrast to the requirement of &gt;= 5 kWh/m(3) of H-2 with an alkaline/PEM electrolyzer. Sustainability has been successfully demonstrated at 10 and 50 mA/cm(2) and up to 120 h with GLYOR in water and simulated seawater.</p>
10aelectrocatalysis10aGlycerol10agreen hydrogen10ananocube10aPalladium10aSDG1 aChauhan, Inderjeet1 aBajpai, Himanshu1 aRay, Bishakha1 aKolekar, Sadhu, K.1 aDatar, Suwarna1 aPatra, Kshirodra, Kumar1 aGopinath, Chinnakonda, S.  uhttp://library.ncl.res.in/content/electrocatalytic-glycerol-conversion-low-voltage-pathway-efficient-carbon-negative-green02550nas a2200253   4500008004100000022001400041245017900055210006900234260000800303300001100311490000800322520161300330653001801943653001301961653001901974653002201993653002802015100002102043700002902064700001502093700002802108700003002136856013002166       2024                        eng d  a0021-951700aOxidative and selective C-C cleavage of glycerol to glycolaldehyde with atom-like Cu on Cu-TiO2: photocatalytic water reduction with concurrent glycerol oxidation in sunlight0 aOxidative and selective CC cleavage of glycerol to glycolaldehyd  cSEP  a1156440 v4373 a<p>
	Concurrent consumption of electrons and holes for the conversion of a biomass component to value added products represents a highly efficient and sustainable approach towards utilizing renewable energy, but difficult to achieve. The integration of hydrogen production with glycerol oxidation presents a novel and sustainable approach towards achieving a circular economy. In the current study, integration of atom-like Cu-clusters onto TiO2 substrate has been achieved using a facile photo-deposition technique (TC-PDO). Also, novel synthetic approaches have been employed to augment the surface coverage of Cu on TiO2 with atom-like clusters of Cu, either by borohydride treatment on TiO2 followed by Cu-deposition (TC-200) or oxygen-vacancy creation by UV illumination followed by Cu-deposition (TC-PDO). Increased dispersion and enhanced electronic integration of Cu with TiO2 lead to a corresponding increase in the efficiency of photocatalytic hydrogen evolution (13.8 mmol/h.g for TC-PDO at pH 9). Several atom-like Cu integrated with each TiO2 particle acts as photocatalytic reactor, and the same enhances electron-hole separation as well as activity. Sustainable aspect was also studied for TC-PDO up to 25 h at pH 9. Concurrently, glycerol oxidation displays the highest selectivity to C2 product (glycolaldehyde with 70 %) with a C-C cleavage. The investigation of this process holds significant potential for the extensive and simultaneous exploitation of electrons and holes in order to achieve water splitting and glycerol oxidation towards selective value-added products formation.</p>
10aC -C Cleavage10aGlycerol10ananotechnology10aPhoto -deposition10asolar energy conversion1 aBajpai, Himanshu1 aNivedhitha, Thazhath, R.1 aDais, Elsa1 aKanungo, Subhashree, S.1 aGopinath, Chinnakonda, S.  uhttp://library.ncl.res.in/content/oxidative-and-selective-c-c-cleavage-glycerol-glycolaldehyde-atom-cu-cu-tio2-photocatalytic