WO3/BiVO4 photoanode coated with mesoporous Al2O3 layer for oxidative production of hydrogen peroxide from water with high selectivity. Issue 75 (11th October 2017)

• Record Type: Journal Article
• Authors: Fuku, Kojiro; Miyase, Yuta; Miseki, Yugo; Gunji, Takahiro; Sayama, Kazuhiro
• Is Part Of: RSC advances. Volume 7:Issue 75(2017)
• Page Start: 47619
• Page End: 47623
• Publication Date: 2017-10-11
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra09693c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A mesoporous and amorphous Al2 O3 layer coated on WO3 /BiVO4 photoanode significantly facilitated inhibiting the oxidative degradation of generated H2 O2 into O2 on the photoanode, resulting in the achieving excellent H2 O2 selectivity. Abstract : A WO3 /BiVO4 photoanode coated with various metal oxides demonstrated high selectivity (faradaic efficiency) for hydrogen peroxide (H2 O2 ) generation from water (H2 O) under irradiation of simulated solar light in a highly concentrated hydrogen carbonate (KHCO3 ) aqueous solution. A mesoporous and amorphous aluminium oxide (Al2 O3 ) layer significantly facilitated inhibition of the oxidative degradation of generated H2 O2 into oxygen (O2 ) on the photoanode, resulting in unprecedented H2 O2 selectivity ( ca. 80%) and the accumulation (>2500 μM at 50C).