| 一种具有Z-Scheme机制的高效可见光驱动的介孔AgI@Fe-MIL-88B-NH2光催化剂 |
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| 引用本文： | 刘雪霆,朱洪程,李缘,王芳,张勇涛,晋冠平,魏凤玉.一种具有Z-Scheme机制的高效可见光驱动的介孔AgI@Fe-MIL-88B-NH2光催化剂[J].无机化学学报,2019,35(7):1255-1266. |
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| 作者姓名： | 刘雪霆 朱洪程 李缘 王芳 张勇涛 晋冠平 魏凤玉 |
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| 作者单位： | 合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009,合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009,合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009,合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009,合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009,合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009,合肥工业大学化学与化工学院, 可控化学与材料化工安徽省重点实验室, 合肥 230009 |
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| 基金项目： | 安徽省自然科学基金（No.1908085MB42）和国家自然科学基金（No.51372062）资助项目 |
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| 摘 要： | 以磺化聚苯乙烯微球为模板制备了具有开口结构的介孔Fe-MIL-88B-NH2球壳，据此进一步通过原位反应法合成一种新型具有可见光活性的AgI改性Fe-MIL-88B-NH2微球。与纯的AgI和Fe-MIL-88B-NH2相比，制备的AgI@Fe-MIL-88B-NH2复合材料的光催化活性显著提高，这是由于吸附能力和电荷分离均得到增强的缘故。电荷分离机制可归因于形成了不含氧化还原调节剂的直接Z-Scheme系统，该系统使光生电子从Fe-MIL-88B-NH2的导带迁移至AgI的价带上，从而产生活性更强的·O2-和·OH。
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| 关 键 词： | 微球 光催化 AgI Z-scheme |
| 收稿时间： | 2018/9/14 0:00:00 |
| 修稿时间： | 2019/4/3 0:00:00 |
A High-Efficiency Visible-Light-Driven Mesoporous AgI@Fe-MIL-88B-NH2 Photocatalyst via Z-Scheme Mechanism |
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| LIU Xue-Ting,ZHU Hong-Cheng,LI Yuan,WANG Fang,ZHANG Yong-Tao,JIN Guan-Ping and WEI Feng-Yu.A High-Efficiency Visible-Light-Driven Mesoporous AgI@Fe-MIL-88B-NH2 Photocatalyst via Z-Scheme Mechanism[J].Chinese Journal of Inorganic Chemistry,2019,35(7):1255-1266. |
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| Authors: | LIU Xue-Ting ZHU Hong-Cheng LI Yuan WANG Fang ZHANG Yong-Tao JIN Guan-Ping and WEI Feng-Yu |
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| Institution: | School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China,School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China,School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China,School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China,School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China,School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China and School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China |
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| Abstract: | Sulfonated polystyrene (PS) microspheres have been used as template to produce mesoporous Fe-MIL-88B-NH2 spherical shell with open pore. Based on the shell a novel visible-light-active AgI modified microsphere Fe-MIL-88B-NH2 was prepared by in situ reaction method. The photocatalytic activity of the resulted AgI@Fe-MIL-88B-NH2 composite was enhanced significantly as compared with pure AgI and Fe-MIL-88B-NH2, which can be derived from the enhanced adsorption capacity and the promoted separation of charge carriers. The possible mechanism for the separation of charge carriers can be attributed to the formation of a redox-mediator-free direct Z-scheme system which causes the photogenerated electrons to migrate from CB of Fe-MIL-88B-NH2 to VB of AgI, thus yielding more active·O2- and·OH. |
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| Keywords: | microspheres photocatalysis AgI Z-scheme |
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