Affiliation:
1. Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science and Research Center for Industries of the Future Westlake University 600 Dunyu Road Hangzhou 310030, Zhejiang Province China
Abstract
AbstractElectricity‐driven organo‐oxidations have shown an increasing potential recently. However, oxygen evolution reaction (OER) is the primary competitive reaction, especially under high current densities, which leads to low Faradaic efficiency (FE) of the product and catalyst detachment from the electrode. Here, we report a bimetallic Ni−Cu electrocatalyst supported on Ni foam (Ni−Cu/NF) to passivate the OER process while the oxidation of 5‐hydroxymethylfurfural (HMF) is significantly enhanced. A current density of 1000 mA cm−2 can be achieved at 1.50 V vs. reversible hydrogen electrode, and both FE and yield keep close to 100 % over a wide range of potentials. Both experimental results and theoretical calculations reveal that Cu doping impedes the OH* deprotonation to O* and hereby OER process is greatly passivated. Those instructive results provide a new approach to realizing highly efficient biomass upgrading by regulating the OER activity.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
General Chemistry,Catalysis
Cited by
41 articles.
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