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Issue 40, 2015
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A one-step ionic liquid-assisted ultrasonic method for the preparation of BiOCl/m-BiVO4 heterojunctions with enhanced visible light photocatalytic activity

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Abstract

By combining the advantages of both ionic liquids and ultrasound, a novel method, namely the ionic liquid-assisted ultrasonic method, was developed to prepare BiOCl/m-BiVO4 heterojunctions in several hours at room temperature. Through this method, BiOCl/BiVO4 heterojunctions with different BiOCl contents can be conveniently synthesized via simply changing the amount of 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) used during the preparation process. X-ray diffraction, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy were used to examine the structures of the as-prepared BiOCl/m-BiVO4 heterojunctions. The morphologies were characterized via scanning electron microscopy and transmission electron microscopy. The results suggest that the as-prepared BiOCl/m-BiVO4 heterojunctions have high photocatalytic activity and stability for the degradation of Rhodamine B under both visible light and sunlight irradiation at room temperature. Moreover, a possible mechanism was proposed.

Graphical abstract: A one-step ionic liquid-assisted ultrasonic method for the preparation of BiOCl/m-BiVO4 heterojunctions with enhanced visible light photocatalytic activity

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Supplementary files

Article information


Submitted
06 Jul 2015
Accepted
03 Sep 2015
First published
04 Sep 2015

CrystEngComm, 2015,17, 7676-7683
Article type
Paper
Author version available

A one-step ionic liquid-assisted ultrasonic method for the preparation of BiOCl/m-BiVO4 heterojunctions with enhanced visible light photocatalytic activity

C. Yang, F. Li and T. Li, CrystEngComm, 2015, 17, 7676
DOI: 10.1039/C5CE01312G

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