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Materials 2016, 9(3), 129; doi:10.3390/ma9030129

Microstructure and Characteristic of BiVO4 Prepared under Different pH Values: Photocatalytic Efficiency and Antibacterial Activity

1
State Key Laboratory of Silicate Building Materials, School of Materials Science and Technology, Wuhan University of Technology, Wuhan 430070, China
2
School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
3
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Academic Editor: Klara Hernadi
Received: 11 January 2016 / Revised: 18 February 2016 / Accepted: 19 February 2016 / Published: 25 February 2016
(This article belongs to the Special Issue Advancement of Photocatalytic Materials 2016)
View Full-Text   |   Download PDF [3961 KB, uploaded 25 February 2016]   |  

Abstract

In the present study, BiVO4 sample was prepared under different pH 0.5–13 without capping agent. Different morphology characteristics were observed, such as sheet crystal structure, cross crystal structure and branching crystal structure. The mechanism of the formation of BiVO4 nanostructure was discussed. Under acid condition, sheet crystal structure was obtained. The phenomenon could be attributed to polymerization of vanadate in the presence of H+. In the weak alkaline solution, across structure and branching type morphology was obtained. The photocatalytic efficiency for the samples ranked as pH 5 > pH 3 > pH 7 > pH 9 > pH 1 > pH 11 > pH 13 > blank, which is in good agreement with X-ray diffraction (XRD) result. E. coli envelop was damaged in the presence of BiVO4 under visible light. The protrusion on envelop was diminished by BiVO4. Attenuated Total Reflection Fourier transformed Infrared Spectroscopy (ATR-FTIR) results suggested the intensity was weakened for the amide, phosphoric, –COO group and C-H bond in lipopolysaccharides (LPS), peptidoglycan and periplasm molecules. View Full-Text
Keywords: BiVO4; monoclinic scheelite structure; photocatalytic efficiency; E. coli; envelop BiVO4; monoclinic scheelite structure; photocatalytic efficiency; E. coli; envelop
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Qu, Z.; Liu, P.; Yang, X.; Wang, F.; Zhang, W.; Fei, C. Microstructure and Characteristic of BiVO4 Prepared under Different pH Values: Photocatalytic Efficiency and Antibacterial Activity. Materials 2016, 9, 129.

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