Effects of pH on the Morphology and Photocatalytic Performance of BiVO4 Prepared Via Hydrothermal Method

DOI

10.2991/isesce-15.2015.17How to use a DOI?

Keywords

BiVO4, pH value, morphology, hydrothermal method, photocatalysis

Abstract

BiVO4 with different morphologies were synthesized via a controllable dodecylamine-assisted hydrothermal method. The effect of pH on the crystallinity, morphology and optical absorption property of BiVO4 was investigated by X-ray diffraction (XRD) scanning electron microscopy(SEM) and UV-vis Diffuse Reflectance Spectra techniques (UV-vis DRS) The photocatalytic efficiencies were evaluated by the degradation of (MB) under visible-light irradiation. It is worthy to note that the obtained monoclinic scheelite BiVO4 (m-BiVO4) prepared at pH 1 possessed a spherical microstructure, low band gap energy, and exhibited the highest photocatalytic activity of the samples, decolorizing up to 98.2 % of MB upon visible light irradiation for 4h. The reason for the different photocatalytic efficiencies of the BiVO4 samples obtained at different pH was investigated by considering the structure and morphology.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xingxing Gao
AU  - Jian Wang
AU  - Hongbo Xu
AU  - Jianglong Yu
PY  - 2015/12
DA  - 2015/12
TI  - Effects of pH on the Morphology and Photocatalytic Performance of BiVO4 Prepared Via Hydrothermal Method
BT  - Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering
PB  - Atlantis Press
SP  - 85
EP  - 88
SN  - 2352-5401
UR  - https://doi.org/10.2991/isesce-15.2015.17
DO  - 10.2991/isesce-15.2015.17
ID  - Gao2015/12
ER  -