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Decoration of one-dimensional MnO2 with Co3O4 nanoparticles: A heterogeneous interface for remarkably promoting catalytic oxidation activity
Tang, Wenxiang1,3,4; Yao, Mingshui2; Deng, Yuzhou1; Li, Xiaofei1; Han, Ning1; Wu, Xiaofeng1; Chen, Yunfa1
2016-12-15
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号306期号:DEC页码:709-718
摘要

Heterogeneous interface in materials has recently attracted much attention because of its crucial role in catalytic reaction. Herein, we report the preparation of high-quality Co3O4-decorated one dimensional (1D) MnO2 hybrids and their application in catalytic degradation of carcinogenic benzene. Three kinds of 1D MnO2 including alpha-MnO2 nanowires, alpha-MnO2 nanorods and beta-MnO2 microrods were firstly synthesized by different hydrothermal method, followed by a controlled Co3O4 functionalized process. The homogeneous coating of the Co3O4 nanoparticles on the surface of the MnO2 created large amounts of remarkable MnO2-Co3O4 heterogeneous interface which was characterized by SEM and TEM techniques. XPS and H-2-TPR studies revealed the decorated hybrids had better low-temperature reducibility and more active surface adsorbed oxygen species. Compared with the bare MnO2, these hybrid MnO2@Co3O4 nanaostructures showed improved catalytic reactivity toward gaseous benzene oxidation, and the enhancement had different dependence upon the various MnO2. Under high space velocity of 120,000 mL g(-1) h(-1), the best-performed alpha-MnO2 nanowires@Co3O4 can decrease the To (temperature of 90% benzene conversion) to 247 degrees C which was almost 100 degrees C lower than the pure alpha-MnO2 nanowires. Their significantly promoted catalytic activity should be attributed to the strong synergistic effect due to the existence of remarkable MnO2-Co3O4 hetero-interface. (C) 2016 Elsevier B.V. All rights reserved.

关键词Heterogeneous Interface 1d Mno2 Co3o4 Nanoparticles Decoration Catalytic Oxidation
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cej.2016.07.107
收录类别SCI
语种英语
关键词[WOS]METAL-SUPPORT INTERACTIONS ; OCTAHEDRAL MOLECULAR-SIEVES ; VOLATILE ORGANIC-COMPOUNDS ; COMPLETE BENZENE OXIDATION ; MANGANESE OXIDE CATALYSTS ; CO OXIDATION ; HYDROTHERMAL SYNTHESIS ; ALPHA-MNO2 NANOWIRES ; PHASE-STRUCTURE ; SURFACE-AREA
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
项目资助者Strategic Project of Science & Technology of Chinese Academy of Sciences(XDB05050000) ; National Natural Science Foundation of China(51272253 ; state key laboratory of multiphase complex systems(MPCS-2015-A-04) ; Natural Science Foundation of Fujian(2015J01230) ; 21401200)
WOS记录号WOS:000386420700077
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21582
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
3.Univ Connecticut, Dept Mat Sci & Engn, 97 N Eagleville Rd, Storrs, CT 06269 USA
4.Univ Connecticut, Inst Mat Sci, 97 N Eagleville Rd, Storrs, CT 06269 USA
推荐引用方式
GB/T 7714
Tang, Wenxiang,Yao, Mingshui,Deng, Yuzhou,et al. Decoration of one-dimensional MnO2 with Co3O4 nanoparticles: A heterogeneous interface for remarkably promoting catalytic oxidation activity[J]. CHEMICAL ENGINEERING JOURNAL,2016,306(DEC):709-718.
APA Tang, Wenxiang.,Yao, Mingshui.,Deng, Yuzhou.,Li, Xiaofei.,Han, Ning.,...&Chen, Yunfa.(2016).Decoration of one-dimensional MnO2 with Co3O4 nanoparticles: A heterogeneous interface for remarkably promoting catalytic oxidation activity.CHEMICAL ENGINEERING JOURNAL,306(DEC),709-718.
MLA Tang, Wenxiang,et al."Decoration of one-dimensional MnO2 with Co3O4 nanoparticles: A heterogeneous interface for remarkably promoting catalytic oxidation activity".CHEMICAL ENGINEERING JOURNAL 306.DEC(2016):709-718.
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