3D BiOBr/BiOCl heterostructure microspheres with enhanced photocatalytic activity

Chenhui Zhao; Ying Liang; Wei Li; Xin Chen; Yi Tian; Dezhong Yin; Qiuyu Zhang

doi:10.1007/s10854-019-02706-x

3D BiOBr/BiOCl heterostructure microspheres with enhanced photocatalytic activity

Chenhui Zhao, Ying Liang, Wei Li, Xin Chen, Yi Tian, Dezhong Yin, Qiuyu Zhang

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

In this paper, BiOBr/BiOCl heterostructure microspheres are prepared successfully via a simple solvothermal way. Research shows that BiOBr/BiOCl microspheres exhibit significantly much higher photocatalytic performance than pure BiOBr or BiOCl. The optimum photodegradation rate of BiOBr/BiOCl for rhodamine B (RhB) is 0.0290 min⁻¹, which is approximately 4.5 times as high as pure BiOBr (k = 0.0065 min⁻¹) and 8.8 times as high as pure BiOCl (k = 0.0033 min⁻¹) under visible light. For this new photocatalyst, the enhanced photoactivity is presumably attributed to the formation of heterojunction which improves the separation of photoinduced electrons and holes to a great extent. Mechanism investigation reveals that O₂ ^.− plays significant roles during the photocatalysis process.

Original language	English
Pages (from-to)	1868-1878
Number of pages	11
Journal	Journal of Materials Science: Materials in Electronics
Volume	31
Issue number	3
DOIs	https://doi.org/10.1007/s10854-019-02706-x
State	Published - 1 Feb 2020

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title = "3D BiOBr/BiOCl heterostructure microspheres with enhanced photocatalytic activity",

abstract = "In this paper, BiOBr/BiOCl heterostructure microspheres are prepared successfully via a simple solvothermal way. Research shows that BiOBr/BiOCl microspheres exhibit significantly much higher photocatalytic performance than pure BiOBr or BiOCl. The optimum photodegradation rate of BiOBr/BiOCl for rhodamine B (RhB) is 0.0290 min−1, which is approximately 4.5 times as high as pure BiOBr (k = 0.0065 min−1) and 8.8 times as high as pure BiOCl (k = 0.0033 min−1) under visible light. For this new photocatalyst, the enhanced photoactivity is presumably attributed to the formation of heterojunction which improves the separation of photoinduced electrons and holes to a great extent. Mechanism investigation reveals that O2 .− plays significant roles during the photocatalysis process.",

author = "Chenhui Zhao and Ying Liang and Wei Li and Xin Chen and Yi Tian and Dezhong Yin and Qiuyu Zhang",

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T1 - 3D BiOBr/BiOCl heterostructure microspheres with enhanced photocatalytic activity

AU - Zhao, Chenhui

AU - Liang, Ying

AU - Li, Wei

AU - Chen, Xin

AU - Tian, Yi

AU - Yin, Dezhong

AU - Zhang, Qiuyu

PY - 2020/2/1

Y1 - 2020/2/1

N2 - In this paper, BiOBr/BiOCl heterostructure microspheres are prepared successfully via a simple solvothermal way. Research shows that BiOBr/BiOCl microspheres exhibit significantly much higher photocatalytic performance than pure BiOBr or BiOCl. The optimum photodegradation rate of BiOBr/BiOCl for rhodamine B (RhB) is 0.0290 min−1, which is approximately 4.5 times as high as pure BiOBr (k = 0.0065 min−1) and 8.8 times as high as pure BiOCl (k = 0.0033 min−1) under visible light. For this new photocatalyst, the enhanced photoactivity is presumably attributed to the formation of heterojunction which improves the separation of photoinduced electrons and holes to a great extent. Mechanism investigation reveals that O2 .− plays significant roles during the photocatalysis process.

AB - In this paper, BiOBr/BiOCl heterostructure microspheres are prepared successfully via a simple solvothermal way. Research shows that BiOBr/BiOCl microspheres exhibit significantly much higher photocatalytic performance than pure BiOBr or BiOCl. The optimum photodegradation rate of BiOBr/BiOCl for rhodamine B (RhB) is 0.0290 min−1, which is approximately 4.5 times as high as pure BiOBr (k = 0.0065 min−1) and 8.8 times as high as pure BiOCl (k = 0.0033 min−1) under visible light. For this new photocatalyst, the enhanced photoactivity is presumably attributed to the formation of heterojunction which improves the separation of photoinduced electrons and holes to a great extent. Mechanism investigation reveals that O2 .− plays significant roles during the photocatalysis process.

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3D BiOBr/BiOCl heterostructure microspheres with enhanced photocatalytic activity

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