BiOI thin film via chemical vapor transport: Photocatalytic activity, durability, selectivity and mechanism

Authors: Liqun Ye, Junnian Chen, Lihong Tian, Jinyan Liu, Tianyou Peng, Kejian Deng, Ling Zan

Abstract:
BiOI thin film (BiOI TF) was prepared via a low temperature chemical vapor transport (CVT) route for the first time, and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, fast-Fourier transform pattern and UV–vis diffuse reflectance. As-synthesized BiOI thin film was composed of high symmetrical BiOI nanosheets with dominant exposed {0 0 1} facets. It displayed better photocatalytic activity, durability and selectivity than benchmark P25 TiO2 thin film and the origin come from the layered structure and good photoelectrochemical performance, CVT immobilization, the 100% terminal oxygen atoms of {0 0 1} facets, respectively. At end, the photocatalytic mechanism with O₂ •− production was studied.

Keywords:
BiOI
Photocatalytic
Durability
Selectivity
Mechanism

Published in: Applied Catalysis B: Environmental (Volumes 130–131, Pages 1-336, 7 February 2013)

Publisher: Elsevier  

ISSN Information: 0926-3373

BiOI thin film via chemical vapor transport: Photocatalytic activity, durability, selectivity and mechanism

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