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A highly efficient photoelectrochemical H2O2 production reaction with Co3O4 as a co-catalyst
Jijie Zhang1, Xiaoxia Chang, Zhibin Luo
1Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China. jlgong@tju.edu.cn.
Abstract:
This communication describes an efficient co-catalyst Co3O4 nanoparticle with a tunable two-electron water oxidation reaction pathway in photoelectrochemical H2O2 production. The photoluminescence measurement explains that the promotion effect is due to the accelerated activation of water to ˙OH. The increased Faraday efficiency of H2O2 for the Co3O4/WO3 sample also verifies that the promotion effect to a two-electron water oxidation reaction of Co3O4 is universal to other semiconductor photoanodes.
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