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ZnO/AgBr复合微纳米球的制备及其光催化降解罗丹明B的性能

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张永兴, 赵园园, 童佩斐, 李佳, 李丽, 朱光平. ZnO/AgBr复合微纳米球的制备及其光催化降解罗丹明B的性能[J]. 环境工程学报, 2018, 12(5): 1277-1285. doi: 10.12030/j.cjee.201708159
引用本文: 张永兴, 赵园园, 童佩斐, 李佳, 李丽, 朱光平. ZnO/AgBr复合微纳米球的制备及其光催化降解罗丹明B的性能[J]. 环境工程学报, 2018, 12(5): 1277-1285. doi: 10.12030/j.cjee.201708159
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ZHANG Yongxing, ZHAO Yuanyuan, TONG Peifei, LI Jia, LI Li, ZHU Guangping. Preparation of ZnO/AgBr composite micro/nanosphere and its performance in degradation of rhodamine B[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1277-1285. doi: 10.12030/j.cjee.201708159
Citation: ZHANG Yongxing, ZHAO Yuanyuan, TONG Peifei, LI Jia, LI Li, ZHU Guangping. Preparation of ZnO/AgBr composite micro/nanosphere and its performance in degradation of rhodamine B[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1277-1285. doi: 10.12030/j.cjee.201708159
shu

ZnO/AgBr复合微纳米球的制备及其光催化降解罗丹明B的性能

  • 1.

    淮北师范大学 先进功能复合材料协同创新中心， 淮北 235000

  • 基金项目:

    国家自然科学基金青年基金资助项目(51302102)

    安徽省自然科学基金面上资助项目(1708085ME96)

    安徽省高等学校省级自然科学研究重点资助项目(KJ2016A638, KJ2016SD53)

    淮北师范大学研究生教育教学研究资助项目(2017jyxm09)

Preparation of ZnO/AgBr composite micro/nanosphere and its performance in degradation of rhodamine B

  • 1.

    Advanced Functional Composites Collaborative Innovation Center, Huaibei Normal University, Huaibei 235000, China

  • Fund Project:

  • 摘要: 使用简单丙三醇-水混合溶剂热法制备碱式碳酸锌微纳米球前驱物，经退火得到ZnO微纳米球，通过液相沉淀法把AgBr纳米颗粒固定在ZnO微纳米球表面，在AgBr 和ZnO之间形成异质结有效地增强了 AgBr/ZnO复合物的光催化活性。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)与紫外可见分光光度计对样品物相、形貌、元素组成及光学性质进行表征。在可见光条件下，研究ZnO及不同AgBr量的ZnO/AgBr复合材料的光催化活性，结果表明：循环修饰5次AgBr的ZnO微纳米球(AgBr颗粒负载质量分数为5%，5%-AZ)样品对罗丹明B的光催化降解性能最好；该复合材料的光催化可重复性使用结果显示循环使用次数的增加，其光催化性能有下降的趋势。通过分析可知在光照条件下 AgBr的分解引起异质结构变化。
    Abstract: ZnO micro/nanospheres were obtained by calcination treatment of a pre-synthesized basic zinc carbonate precursor micro/nanospheres prepared using a simple, glycerol-mediated solvothermal method. AgBr nanoparticles were then immobilized on the surface of the ZnO micro nanospheres by liquid phase precipitation method. A hetero-junction structure was formed between AgBr and ZnO, which efficiently enhanced photocatalytic activity of AgBr/ZnO composite. The phase, morphology, elemental composition and optical spectra of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and UV-vis spectrophotometer, respectively. The photocatalytic activities of ZnO and ZnO/AgBr composites with different AgBr contents were investigated under visible light illumination. The experimental results show that the ZnO micro/nanospheres modified with AgBr about 5 cycle times (the loading mass percent of AgBr particles is 5%, 5%-AZ) have the best photocatalytic activity for the degradation of rhodamine B(RhB). Renewable photocatalytic activity of the sample shows a downward trend with the cycle times increased. The reason can be attributed to the change of heterogeneous structure caused by the decomposition of AgBr under illumination.
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  • 刊出日期:  2018-05-19

ZnO/AgBr复合微纳米球的制备及其光催化降解罗丹明B的性能

  • 1. 淮北师范大学 先进功能复合材料协同创新中心， 淮北 235000
基金项目:

国家自然科学基金青年基金资助项目(51302102)

安徽省自然科学基金面上资助项目(1708085ME96)

安徽省高等学校省级自然科学研究重点资助项目(KJ2016A638, KJ2016SD53)

淮北师范大学研究生教育教学研究资助项目(2017jyxm09)

摘要: 使用简单丙三醇-水混合溶剂热法制备碱式碳酸锌微纳米球前驱物，经退火得到ZnO微纳米球，通过液相沉淀法把AgBr纳米颗粒固定在ZnO微纳米球表面，在AgBr 和ZnO之间形成异质结有效地增强了 AgBr/ZnO复合物的光催化活性。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)与紫外可见分光光度计对样品物相、形貌、元素组成及光学性质进行表征。在可见光条件下，研究ZnO及不同AgBr量的ZnO/AgBr复合材料的光催化活性，结果表明：循环修饰5次AgBr的ZnO微纳米球(AgBr颗粒负载质量分数为5%，5%-AZ)样品对罗丹明B的光催化降解性能最好；该复合材料的光催化可重复性使用结果显示循环使用次数的增加，其光催化性能有下降的趋势。通过分析可知在光照条件下 AgBr的分解引起异质结构变化。

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