WO3/BiVO4 photoanode coated with mesoporous Al2O3 layer for oxidative production of hydrogen peroxide from water with high selectivity

Kojiro Fuku; Yuta Miyase; Yugo Miseki; Takahiro Gunji; Kazuhiro Sayama

doi:10.1039/C7RA09693C

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WO₃/BiVO₄ photoanode coated with mesoporous Al₂O₃ layer for oxidative production of hydrogen peroxide from water with high selectivity†

Kojiro Fuku,

*^a Yuta Miyase,^ab Yugo Miseki,

^a Takahiro Gunji^ab and Kazuhiro Sayama*^ab

Author affiliations

* Corresponding authors

^a Research Center for Photovoltaics (RCPV), National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
E-mail: k.sayama@aist.go.jp

^b Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba 278-8514, Japan

Abstract

A WO₃/BiVO₄ photoanode coated with various metal oxides demonstrated high selectivity (faradaic efficiency) for hydrogen peroxide (H₂O₂) generation from water (H₂O) under irradiation of simulated solar light in a highly concentrated hydrogen carbonate (KHCO₃) aqueous solution. A mesoporous and amorphous aluminium oxide (Al₂O₃) layer significantly facilitated inhibition of the oxidative degradation of generated H₂O₂ into oxygen (O₂) on the photoanode, resulting in unprecedented H₂O₂ selectivity (ca. 80%) and the accumulation (>2500 μM at 50C).

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Article information

DOI: https://doi.org/10.1039/C7RA09693C
Article type: Paper
Submitted: 31 Aug 2017
Accepted: 03 Oct 2017
First published: 11 Oct 2017
This article is Open Access

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RSC Adv., 2017,7, 47619-47623

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WO₃/BiVO₄ photoanode coated with mesoporous Al₂O₃ layer for oxidative production of hydrogen peroxide from water with high selectivity

K. Fuku, Y. Miyase, Y. Miseki, T. Gunji and K. Sayama, RSC Adv., 2017, 7, 47619 DOI: 10.1039/C7RA09693C

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