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Z‐Scheme Photocatalytic Water Splitting on a 2D Heterostructure of Black Phosphorus/Bismuth Vanadate Using Visible Light
Author(s) -
Zhu Mingshan,
Sun Zhichao,
Fujitsuka Mamoru,
Majima Tetsuro
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201711357
Subject(s) - bismuth vanadate , photocatalysis , heterojunction , water splitting , black phosphorus , visible spectrum , vanadate , bismuth , materials science , solar energy , chemistry , inorganic chemistry , optoelectronics , catalysis , electrical engineering , biochemistry , metallurgy , engineering
Spontaneously solar‐driven water splitting to produce H 2 and O 2 , that is, the conversion of solar energy to chemical energy is a dream of mankind. However, it is difficult to make overall water splitting feasible without using any sacrificial agents and external bias. Drawing inspiration from nature, a new artificial Z‐scheme photocatalytic system has been designed herein based on the two‐dimensional (2D) heterostructure of black phosphorus (BP)/bismuth vanadate (BiVO 4 ). An effective charge separation makes possible the reduction and oxidation of water on BP and BiVO 4 , respectively. The optimum H 2 and O 2 production rates on BP/BiVO 4 were approximately 160 and 102 μmol g −1 h −1 under irradiation of light with a wavelength longer than 420 nm, without using any sacrificial agents or external bias.