Topic
Chemisorption
About: Chemisorption is a research topic. Over the lifetime, 16298 publications have been published within this topic receiving 554989 citations.
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TL;DR: In this paper, bimetallic Ru-M oxygen evolution reaction (OER) electrocatalysts for use in water splitting in acidic electrolytes were explored using an electrochemical multielectrode cell.
Abstract: We have explored bimetallic Ru-M oxygen evolution reaction (OER) electrocatalysts for use in water splitting in acidic electrolytes. Using an electrochemical multielectrode cell, we investigated the OER activity of selected compositions of seven binary alloy systems, Ru-M (M = Pd, Ir, Cu, Co, Re, Cr, Ni). Benchmarked using pure Ru electrocatalysts, Ru-Co, Ru-Ir, and Ru-Cu exhibited improved Ru mass-based catalytic activities. Structural studies of the precursor alloys indicated the presence of hexagonal and cubic mixed metal phases. We hypothesize that the secondary metal component modulates the chemisorption energy of oxygen, which was suggested to be a sensitive rate controlling parameter in the OER catalysis and favors the formation of atomic oxygen O ad and possibly HOO ad species rather than OH ad species on the oxide catalyst.
143 citations
TL;DR: In this article, a mixed inhibition mechanism was proposed for the inhibitive effects of polyacrylamide (PA) as revealed by potentiodynamic polarization technique and a synergistic effect was observed between PA and KI as evident from the values of synergism parameter found to be greater than unity.
143 citations
TL;DR: In this paper, a complete description of the composition of the mixed copper-anion overlayers is given, and it is shown that the coadsorption of a copper adatom and the anion has a cooperative character and that the ion affects the kinetics and energetics of the copper deposition reaction.
143 citations
TL;DR: In this paper, the chemisorption of CO2 on transition metal surfaces was investigated to find out the key factors controlling its adsorption strength and activation degree, and the interaction mechanism of CO 2 with the metal surfaces were discussed by analyzing the density of states.
Abstract: On the basis of density functional theory calculations, the chemisorption of CO2 on the transition metal surfaces was investigated to find out the key factors controlling its adsorption strength and activation degree. The interaction mechanism of CO2 with the metal surfaces was discussed by analyzing the density of states. The adsorption strength of CO2 is controlled by the d-band center of the metal surfaces and also affected by the charge transfer from the metal surfaces to the chemisorbed CO2. The degree of CO bond activation depends on the transferred charge. Therefore, both d-band center of the metal surfaces and the charge transfer should control the chemisorption of CO2.
143 citations
TL;DR: In this paper, the surface reduction and oxidation of nanocrystalline CeO2 and CuO/CeO2 was investigated by temperature-programmed reduction (TPR) and isothermal/temperatureprogrammed oxidation (TPO) measurements.
143 citations