CdS NPs@MIL-125复合光催化剂的制备及其可见光降解RhB性能研究
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- 英文论文题名：MIL-125 tetragons immobilized CdS NPs with ehhanced photocatalytic activity towards RhB degradation under visible-light irradiation
- 论文作者：王宇 ; 覃燕兰 ; 陈刚
- 英文论文作者：Yu Wang ; Yanlan Qin ; Gang Chen ; Department of Materials Chemistry ; Harbin Institute of Technology
- 年：2016
- 作者机构：哈尔滨工业大学材料化学系;
- 论文关键词：金属有机框架 ; 纳米颗粒 ; 光催化 ; 暴露晶面
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十二分会：能源纳米材料物理化学
- 语种：中文
- 分类号：O643.36;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十二分会 ; 能源纳米材料物理化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：148k
- 原文格式：D
- 会议级别：全国
摘要
在本文中,通过简单的溶剂热合成方法制备了包覆有CdS纳米颗粒(nanoparticles)并暴露(001)晶面的MIL-125材料。CdS纳米颗粒填充到MOFs材料的孔道中可以提高材料在可见光条件下降解罗丹明B(RhB)性能。此外,循环性能测试表明复合光催化剂具有较好的稳定性,说明MIL-125和CdS间异质结构可以有效的提高光生电子和空穴的分离效率。该复合材料已经通过PXRD,UV-visible DRS,BET和TEM进行了表征,结果说明CdS纳米颗粒以较小的尺寸均匀分散在Mil-125结构中。说明MIL-125具有限制催化剂纳米颗粒的尺寸、提升电荷迁移速率的作用,最终提高光催化性能。
In this paper, CdS nanoparticles(NPs)@MIL-125 with exposed(001) facets were fabricated by a simple solvothermal route. The integration of CdS NPs into MOFs can endow these porous materials with enhanced photocatalytic activity towards Rh B degradation under visible-light irradiation. In addition to the enhanced photocatalytic activity, the photocatalytic stability indicates that the structure of CdS NPs@MIL-125 composite is unchangeful after several cycles of reaction, which is responsible for the heterojunction between MIL-125 and CdS promoting the separation of photogenerated electron-hole pairs. The composite has been characterized by PXRD, UV-visible DRS, BET and TEM. The results show that CdS NPs are embedded into MIL-125 with high content, small size and high dispersity. The MIL-125 support plays the roles of confining the size of catalyst nanoparticles and promoting charge transfer, leading to an enhanced photocatalytic performance.
In this paper, CdS nanoparticles(NPs)@MIL-125 with exposed(001) facets were fabricated by a simple solvothermal route. The integration of CdS NPs into MOFs can endow these porous materials with enhanced photocatalytic activity towards Rh B degradation under visible-light irradiation. In addition to the enhanced photocatalytic activity, the photocatalytic stability indicates that the structure of CdS NPs@MIL-125 composite is unchangeful after several cycles of reaction, which is responsible for the heterojunction between MIL-125 and CdS promoting the separation of photogenerated electron-hole pairs. The composite has been characterized by PXRD, UV-visible DRS, BET and TEM. The results show that CdS NPs are embedded into MIL-125 with high content, small size and high dispersity. The MIL-125 support plays the roles of confining the size of catalyst nanoparticles and promoting charge transfer, leading to an enhanced photocatalytic performance.
引文
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[2]Wu,Y.;Zhou,M.;Li,S.;Li,Z.;Li,J.;Wu,B.;Li,G.;Li,F.;Gun,X.Small 2014,10:2927.
[3]Shi,L.;Wang,T.;Zhang,H.;Chang,K.;Meng,X.;Liu,H.;Ye,J.Adv.Sci.2015,2:150006.