metal-oxygen covalencyneutraloxygen evolution reactionOxygen evolution reaction(OER)is crucial for hydrogen production as well as other energy storage technologies.CoFe-layered double hydroxide(CoFe-OH)has been widely considered as one of the most efficient electrocatalysts for OER in basic aqueous ...
The enlarged B-site metal-oxygen covalency could boost the electron transfer between PMS and Co (III) /Fe (III) , and thus accelerate the redox reaction. SO 4 - and 1 O 2 are the dominating species for the degradation. This study deepens the catalytic mechanism and uncovers the active ...
Besides, the strengthened metal–oxygen covalency of HEO may alter the OER mechanism from AEM to LOM, which can provide lower theoretical potential [19], [20]. To optimize the local electron structure and surface character of the catalyst, anion doping is also an effective strategy, which can...
106 Moreover, increasing metal-oxygen covalency of metal oxides is shown to increase ORR activity for metal oxides with “eg” filling of ∼1.27 Unfortunately these activity descriptors were estimated from previous ex situ measurements of “eg” filling or obtained from computed binding energies ...
These results confirmed that the Li+-intercalation did not change the crystalline phase of TiO2, but introduced lattice oxygen vacancies and Ti3+sites that distorted the lattice. In addition, the concentration of Ti3+increased with increasing the intercalation intensity, and the Ti3+species come from...
Anodic oxygen evolution reaction (OER) is recognized as kinetic bottleneck in water electrolysis. Transition metal sites with high valence states can accelerate the reaction kinetics to offer highly intrinsic activity, but suffer from thermodynamic forma
wediscussmechanismsthatarefundamentallydifferentfromtheconventionalschemeandshowthatincreasingthecovalencyofmetal–oxygenbondsiscriticaltotriggerlattice-oxygenoxidationandenablenon-concertedproton–electrontransfersduringOER.Activatingtheanionicredoxchemistryofoxygeninmetaloxides,onthesurfaceandinbulk,canprovideexciting...
This shift has been discussed in terms of the electronic effect of the carboxylate group and the covalency in the bonding between the bridging phenolic oxygen and the second metal ion. 展开 关键词: Humans Urinary Incontinence Diabetes Mellitus Diuretics Hysterectomy Prevalence Postmenopause Ethnic ...
6h). As the thickness of ZnO sheet increases, the covalency of Zn−O bonds is greater (as indicated by the larger Zn−O bond order shown in Fig. 6e) and the activity of O atoms is enhanced, consistent with the regulation found for the active O atoms on transition metal oxide ...
when the oxygen p-band atoms are higher, electron transfer is observed from the oxygen p-band to the metal d-band. This electron transfer leads to ligand holes and the release of oxygen-forming oxygen vacancies.14The increased metal-oxygen covalency thus pushes the process toward the LOM throu...