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Facile synthesis of hierarchical BiOClxBr1–x solid solution with enhanced photocatalytic activity

层次结构卤氧化铋的合成及其光催化活性研究

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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.

摘要

通过简单的溶剂热法合成了层次结构的卤氧化铋, 采用XRD、FESEM、UV-vis DRS、BET 分 别对产品的物相、形貌、光学性能以及比表面积进行了分析。相比于单组分的BiOCl 和BiOBr, BiOClxBr1–x 固溶体由于其具有精细的层次结构、更大的比表面积以及合适的能带宽度, 因此对罗丹 明具有更高的光催化活性。同时, 本文探究了光催化剂的循环可再生性和稳定性并提出了可能的光催 化反应机理。

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China

    Ying-ying Gu  (古映莹), Yi-qiu **ong  (熊意球), **-xi Zhang  (张茜茜), Li Zhao  (赵莉), Shou-chun Zhang  (张寿春) & Jun Yan  (颜军)

  2. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, 410083, China

    Ying-ying Gu  (古映莹), Yi-qiu **ong  (熊意球), **-xi Zhang  (张茜茜), Li Zhao  (赵莉), Shou-chun Zhang  (张寿春) & Jun Yan  (颜军)

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  1. Ying-ying Gu  (古映莹)
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  2. Yi-qiu **ong  (熊意球)
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  4. Li Zhao  (赵莉)
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  6. Jun Yan  (颜军)
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Correspondence to Jun Yan  (颜军).

Additional information

Foundation item: Project(2016TP1007) supported by the Hunan Provincial Science and Technology Plan Project, China

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Gu, Yy., **ong, Yq., Zhang, Xx. et al. Facile synthesis of hierarchical BiOClxBr1–x solid solution with enhanced photocatalytic activity. J. Cent. South Univ. 25, 1619–1627 (2018). https://doi.org/10.1007/s11771-018-3854-0

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  • DOI: https://doi.org/10.1007/s11771-018-3854-0

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