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Journal of Nanoparticle Research

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01-07-2018 | Research Paper

Synthesis of BiOCl_0.5I_0.5/TiO₂ heterojunctions with enhanced visible-light photocatalytic properties

Authors: Baoying Wang, Lun Li, Jiakuan Chen, Chenglin Duan, Jinling Song, Ruifen Wang, Bangwen Zhang

Published in: Journal of Nanoparticle Research | Issue 7/2018

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Abstract

In this paper, a series of BiOCl_0.5I_0.5/TiO₂ photocatalysts were in situ synthesized by a simple mixed solvothermal method with the aid of lactic acid. The structures and morphologies of as-prepared samples were characterized by XRD, SEM, BET, and DRS. The results of visible light degradation for methyl orange (MO) demonstrated that the BiOCl_0.5I_0.5/TiO₂ heterojunctions assembled by nanosheets were possessed of enhanced photocatalytic activity, comparing with pure BiOCl_0.5I_0.5 and TiO₂. Especially, the composite in which the mass percent of TiO₂ was 5.98% exhibited the most excellent photocatalysis among the prepared heterojunctions, the degradation efficiency of which reached 98% under visible light irradiation for 3 h. The remarkably enhanced photocatalytic activities of BiOCl_0.5I_0.5/TiO₂ heterojunctions were attributed to the good adsorption capacity of MO, suitable bandgap, quick charge separation, and transfer of P–N junction heterostructure. The corresponding photocatalytic mechanism was proposed to further explain the photocatalysis process.

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Title: Synthesis of BiOCl0.5I0.5/TiO2 heterojunctions with enhanced visible-light photocatalytic properties
Authors: Baoying Wang
Lun Li
Jiakuan Chen
Chenglin Duan
Jinling Song
Ruifen Wang
Bangwen Zhang
Publication date: 01-07-2018
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 7/2018
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-018-4270-y

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