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Sunlight responsive BiVO4photocatalyst: Effects of pH on L-cysteine-assisted hydrothermal treatment and enhanced degradation of ofloxacin

Paper ID Volume ID Publish Year Pages File Format Full-Text
51600 46847 2011 5 PDF Available
Title
Sunlight responsive BiVO4photocatalyst: Effects of pH on L-cysteine-assisted hydrothermal treatment and enhanced degradation of ofloxacin
Abstract

BiVO4 possessing different morphologies have been selectively synthesized by a simple procedure that based on an l-cysteine-assisted hydrothermal approach. Novel morphologies of the BiVO4 microstructures such as bone-like, bowknot-like and nanorod structures have been successfully obtained by controlling the pH value of the reaction solution. The effect of pH on the morphology, crystallinity and optical absorption property of BiVO4 was investigated. It is worthy to note that the obtained monoclinic scheelite BiVO4 (m- BiVO4) sample prepared at pH 1.0 possesses a bone-like microstructure, widened band gap and exhibits enhanced sunlight photocatalytic performance in the decomposition of ofloxacin antibiotic.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► A monoclinic scheelite BiVO4 with a bone-like structure was prepared for the first time. ► A novel and environmentally friendly l-cysteine-assisted hydrothermal synthesis approach were used. ► Morphology was controlled by adjusting the initial pH value of the reaction solution. ► Bone-like BiVO4 exhibited excellent sunlight photocatalytic activity for the ofloxacin antibiotic degradation.

Keywords
l-cysteine; BiVO4; Morphology; Ofloxacin; Sunlight
First Page Preview
Sunlight responsive BiVO4photocatalyst: Effects of pH on L-cysteine-assisted hydrothermal treatment and enhanced degradation of ofloxacin
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 16, Issue 1, 30 November 2011, Pages 250–254
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis