| SiO2@AgCl:Ag纳米复合材料:一种可见光催化降解罗丹明B的高效等离子体光催化剂 |
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| 引用本文： | 姜雯,刘俊学,冯娟,王吉壮,李彦鹏,安长华.SiO2@AgCl:Ag纳米复合材料:一种可见光催化降解罗丹明B的高效等离子体光催化剂[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 姜雯 刘俊学 冯娟 王吉壮 李彦鹏 安长华 |
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| 作者单位： | 中国石油大学重质油国家重点实验室,青岛 266580;中国石油大学重质油国家重点实验室,青岛 266580;中国石油大学重质油国家重点实验室,青岛 266580;中国石油大学重质油国家重点实验室,青岛 266580;中国石油大学重质油国家重点实验室,青岛 266580;中国石油大学重质油国家重点实验室,青岛 266580 |
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| 基金项目： | 国家自然科学基金(No.21001116)和中石油创新基金(No.2010D-5006-0505)资助项目。 |
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| 摘 要： | 采用多元醇沉淀以及光化学还原法制备了SiO2担载AgCl:Ag等离子体纳米粒子。通过表征发现SiO2@AgCl:Ag粒子呈立方-四足角状。同时,由于表面Ag簇的等离子共振效应,该催化剂在可见光区有很强的光吸收,可用于在高效降解稳定的有机染料,例如,罗丹明B。合成的SiO2@AgCl:Ag复合催化剂可在2 min内将罗丹明B分子完全降解。自由基捕获实验进一步探究发现O2·-和·OH是参与降解反应的主要氧化活性物种。以上SiO2@AgCl:Ag的这些特性使其在水净化和环境治理方面有着潜在的应用。
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| 关 键 词： | SiO2@AgCl:Ag 可见光 等离子体光催化剂 纳米复合物 非均相光催化 |
| 修稿时间： | 3/8/2013 12:00:00 AM |
SiO2@AgCl:Ag Nanocomposites: an Efficient Plasmonic Photocatalyst for Degradation of Rhodamine B under Visible-Light Irradiation |
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| JIANG Wen,LIU Jun-Xue,FENG Juan,WANG Ji-Zhuang,LI Yan-Peng and AN Chang-Hua.SiO2@AgCl:Ag Nanocomposites: an Efficient Plasmonic Photocatalyst for Degradation of Rhodamine B under Visible-Light Irradiation[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | JIANG Wen LIU Jun-Xue FENG Juan WANG Ji-Zhuang LI Yan-Peng and AN Chang-Hua |
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| Institution: | State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum,Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum,Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum,Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum,Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum,Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum,Qingdao, Shandong 266580, China |
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| Abstract: | A plasmonic AgCl:Ag nanoparticles supported on SiO2 has been prepared using polyol precipitation method followed by photoreduction. On the basis of characterization, it was found that SiO2@AgCl:Ag nanoparticles exhibit shaped cube-tetrapods. The as-prepared catalysts show strong absorption in visible region due to surface plasmon resonance of Ag nanograins, which are beneficial for photocatalytic degradation of toxic persistent organic pollutants, e.g., rhodamine B, under visible light irradiation. For example, only two minutes was taken to decompose rhodamine B molecules with the assistance of SiO2@AgCl:Ag. Furthermore, radical scavenger effects demonstrate that O2·- and ·OH radicals are main active oxidation species in photocatalytic reaction. These features mean SiO2@AgCl:Ag can find applications in the fields of water disinfection and environmental remediation. |
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| Keywords: | SiO2@AgCl:Ag visible light plasmonic photocatalyst nanocomposite heterogeneous photocatalysis |
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