Phys.org December 6, 2024 An international team of researchers (Germany, Spain) investigated the electronic and structural behavior of the newly developed oxygen evolution reaction (OER) Kopernikus P2X amorphous IrOx/TiO2. It was compared to the current commercial benchmark catalyst: crystalline IrO2/TiO2, Umicore Elyst. Analysis of the redox behavior of the catalysts showed distinct electronic differences between the amorphous and crystalline oxides. They derived property–structure relationships under equivalent OER conditions for materials exhibiting distinctly different activities and found that P2X IrOx/TiO2 catalyst underwent substantial electronic structure changes, with larger reduction in the Ir–O bond lengths compared to that of the commercial benchmark […]
Category Archives: Catalysis
Chemists use light to replace an oxygen atom with a nitrogen atom in a molecule
Phys.org October 7, 2024 The identity of a heteroatom within an aromatic ring influences the chemical properties of that heterocyclic compound. Chemists have recently introduced a flurry of editing methods to excise individual atoms from molecular frameworks and, in some cases, replace them with alternate functionality. However, systematically evaluating the effect of a single atom poses synthetic challenges, primarily because of thermodynamic mismatches in atomic exchange processes. Researchers in the Republic of Korea developed a photocatalytic strategy that swaps an oxygen atom of furan with a nitrogen group, directly converting the furan into a pyrrole analog in a single intermolecular […]
Review of technologies that boost potential for carbon dioxide conversion to useful products
Phys.org July 1, 2022 Researchers in China summarized the recent advances in MOFs based catalysts for CO2 hydrogenation towards diverse products. It includes synthesis strategies for different kinds of MOFs based catalysts, selective hydrogenation of CO2 towards CO and methane over various metal nanoparticles/MOFs, heterogenization and isolation of molecular catalysts by MOFs, selective hydrogenation of CO2 toward methanol, the synergy between auxiliary sites and noble metal, and tandem catalytic systems of molecular catalysts and Lewis acid sites. The integration of multiple metal sites, promoters, and cocatalysts into MOFs is described for the selective hydrogenation of CO2 to C2+ products. The […]