核壳型Mn_2O_3@CeO_2立方结构的控制合成与CO催化性能研究
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- 英文论文题名：Controlled Synthesis of Mn_2O_3@CeO_2 Core-Shell Cubes with Enhanced Catalytic Activity toward CO Oxidation
- 论文作者：刘玲 ; 石静静
- 英文论文作者：Ling Liu ; Jingjing Shi ; Low Carbon Energy Institute ; China University of Mining and Technology ; School of Chemical Engineering and Technology ; China University of Mining and Technology
- 年：2016
- 作者机构：中国矿业大学低碳能源研究院;中国矿业大学化工学院;
- 论文关键词：核壳结构 ; 铈锰金属氧化物 ; CO催化
- 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-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：TB383.1;O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 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：134k
- 原文格式：D
- 会议级别：全国
摘要
具有核壳结构的多组分复合材料的异质界面处可以提供丰富的氧化还原反应环境,实现核与壳之间的协同效应,从而极大地增效和调控催化反应性能。本文以尺寸均一、分散性良好的Mn_2O_3纳米立方体为前驱物,利用简单快速的液-固界面化学反应过程,自组装成核壳型Mn_2O_3@CeO_2纳米立方结构,并通过调控反应物料中Ce/Mn的摩尔比率简单有效地剪裁CeO_2壳层的厚度。制备的Mn_2O_3@CeO_2核壳型纳米立方结构在CO的催化氧化过程中表现出优异的催化活性,显示出该材料在催化应用方面具有潜在的应用价值。该法也有望进一步应用于合成其它具有CeO_2壳层的金属氧化物核壳纳米结构,并在如光、电等其它技术领域具有潜在的应用价值。
The fabrication of multi-component hybrid nanostructures is of vital importance because their two-phase interface could provide a rich environment for redox reactions, which are beneficial for enhancing catalytic performance. Inspired by the above consideration, a series of Mn_2O_3@CeO_2 core-shell cubes have been successfully prepared via a fast and facile self-assembly method. The thickness of the CeO_2 shell can be tuned through simple variation of the feeding molar ratio of Ce/Mn. These Mn_2O_3@CeO_2 core-shell cubes are used for catalytic CO oxidation and show excellent catalytic properties. This approach could be further applied to other material systems to create various core-shell nanostructures for a broad range of technical applications.
The fabrication of multi-component hybrid nanostructures is of vital importance because their two-phase interface could provide a rich environment for redox reactions, which are beneficial for enhancing catalytic performance. Inspired by the above consideration, a series of Mn_2O_3@CeO_2 core-shell cubes have been successfully prepared via a fast and facile self-assembly method. The thickness of the CeO_2 shell can be tuned through simple variation of the feeding molar ratio of Ce/Mn. These Mn_2O_3@CeO_2 core-shell cubes are used for catalytic CO oxidation and show excellent catalytic properties. This approach could be further applied to other material systems to create various core-shell nanostructures for a broad range of technical applications.
引文
[1]Zhen,J.;Wang,X.;Liu,D.;Wang,Z.;Li,J.;Wang,F.;Wang,Y.;Zhang,H.Nano Research 2015,8(6):1944.
[2]Wang,F.;Wang,X.;Liu,D.;Zhen,J.;Li,J.;Wang,Y.;Zhang,H.ACS Appl.Mater.Interfaces 2014,6:22216.
[3]Zhen,J.;Wang,X.;Liu,D.;Song,S.;Wang,Z.;Wang,Y.;Li,J.;Wang,F.;Zhang,H.Chem.Eur.J.2014,20:4469.
[2]Wang,F.;Wang,X.;Liu,D.;Zhen,J.;Li,J.;Wang,Y.;Zhang,H.ACS Appl.Mater.Interfaces 2014,6:22216.
[3]Zhen,J.;Wang,X.;Liu,D.;Song,S.;Wang,Z.;Wang,Y.;Li,J.;Wang,F.;Zhang,H.Chem.Eur.J.2014,20:4469.