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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 7    July 2018

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Facile synthesis of hierarchical BiOClxBr1–x solid solution with enhanced photocatalytic activity
GU Ying-ying(古映莹)1, 2, XIONG Yi-qiu(熊意球)1, 2, ZHANG Xi-xi(张茜茜)1, 2,ZHAO Li(赵莉)1, 2, ZHANG Shou-chun(张寿春)1, 2, YAN Jun(颜军)1, 2

1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources,Central South University, Changsha 410083, China

Abstract:The hierarchical BiOClxBr1–x was synthesized by a simple solvothermal method. The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-visible diffuse reflectance spectroscopy (UV-vis DRS) and Brunauer-Emmett-Teller adsorption method. Compared to pure BiOCl or BiOBr, the BiOClxBr1–x solid solution has enhanced photocatalytic degradation activity for rhodamine B. This phenomenon can be explained to the hierarchical structure, lager specific surface area and appropriate energy gap of the obtained BiOClxBr1–x solid solution. The renewability and stability of photocatalyst were determinated and a possible mechanism of photocatalytic degradation was also proposed.

 

Key words: bismuth oxyhalides; solid solution; hierarchical structure; photocatalytic degradation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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