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BiOBr可见光催化降解环丙沙星的晶面依赖性能

Facets-dependent Performance of BiOBr for Photocatalytic Degradation of Ciprofloxacin Under Visible Light
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摘要 采用水热法制得了分别择优暴露{110}、{010}和{001}晶面的BiOBr.XRD研究结果显示,相应样品{110}与{102}衍射峰的强度之依次减小;可见光下BiOBr光催化降解环丙沙星的实验结果表明,BiOBr{110}、BiOBr{010}和BiOBr{001}上环丙沙星降解反应速率常数依次为0.008 9、0.001 2和0.000 9 min-1,即暴露的{110}晶面越多,其光催化降解环丙沙星的活性越高.BiOBr{110}晶面具有强的内电场,应是其高催化性能的内在原因. The BiOBr samples with { 110},{ 010} or { 001} facets were obtained by hydrothermal methods.The results of XRD show that their intensity ratios of diffraction peak{ 110} to { 102} decrease accordingly.The reaction rate constants of BiOBr{ 110},BiOBr{ 010} and BiOBr{ 001} for photocatalytic decomposing ciprofloxacin under visible light irradiation were 0.008 9,0.001 2 and 0.000 9 min-1,respectively.That is to say,the more the{ 110} facets exposed,the higher the photocatalytic efficiency of BiOBr.The strong internal electric field of BiOBr with { 110} facets is shown to be the intrinsic factor for its high photocatalytic performance.
作者 邱亮 赵玉宝 樊造 刘彪 欧阳兵
机构地区 南华大学化学化工学院
出处 《南华大学学报（自然科学版）》 2016年第2期103-106,共4页 Journal of University of South China：Science and Technology
基金 湖南省教育厅科学研究优秀青年基金资助项目(13B100)
关键词 晶面 光催化 环丙沙星 速率常数 facet photocatalysis ciprofloxacin rate constants
分类号 O643 [理学—物理化学]
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参考文献11

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南华大学学报（自然科学版）
2016年 第2期

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