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Vertically-aligned Co3O4 arrays on Ni foam as monolithic structured catalysts for CO oxidation: effects of morphological transformation
Mo, Shengpeng1,2; Li, Shuangde2; Ren, Quanming1; Zhang, Mingyuan1; Sun, Yuhai1; Wang, Bangfen1; Feng, Zhentao1; Zhang, Qi1; Chen, Yunfa2,3; Ye, Daiqi1,4,5
2018-04-28
Source PublicationNANOSCALE
ISSN2040-3364
Volume10Issue:16Pages:7746-7758
Abstract

A generic hydrothermal synthesis route has been successfully designed and utilized to in situ grow highly ordered Co3O4 nanoarray (NA) precursors on Ni substrates, forming a series of Co3O4 nanoarray-based monolithic catalysts with subsequent calcination. The morphology evolution of Co3O4 nanostructures which depends upon the reaction time, with and without CTAB or NH4F is investigated in detail, which is used to further demonstrate the growth mechanism of Co3O4 nanoarrays with different morphologies. CO is chosen as a probe molecule to evaluate the catalytic performance over the synthesized Co-based oxide catalysts, and the effect of morphological transformation on the catalytic activity is further confirmed via using TEM, H-2-TPR, XPS, Raman spectroscopy and in situ Raman spectroscopy. As a proof of concept application, core-shell Co3O4 NAs-8 presenting hierarchical nanosheets@nanoneedle arrays with a low density of nanoneedles exhibits the highest catalytic activity and long-term stability due to its low-temperature reducibility, the lattice distortion of the spinel structure and the abundance of surface-adsorbed oxygen (O-ads). It is confirmed that CO oxidation on the surface of Co3O4 can proceed through the Langmuir-Hinshelwood mechanism via using in situ Raman spectroscopy. It is expected that the in situ synthesis of well-defined Co3O4 monolithic catalysts can be extended to the development of environmentally-friendly and highly active integral materials for practical industrial catalysis.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c8nr00147b
Indexed BySCI
Language英语
WOS KeywordMetal-organic Frameworks ; Carbon-monoxide ; Synergistic Activity ; Oxygen Vacancies ; Room-temperature ; Double Hydroxide ; Nanowire Arrays ; Performance ; Oxides ; Nanoparticles
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Key R D plan(2017YFC0211503) ; Open Research Fund of the State Key Laboratory of Multi-phase Complex Systems(MPCS-2017-D-06) ; National Natural Science Foundation of China(51378218 ; 51672273 ; 21401200)
WOS IDWOS:000431030000049
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24432
Collection多相复杂系统国家重点实验室
Affiliation1.South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
4.Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Guangdong, Peoples R China
5.South China Univ Technol, Guangzhou Higher Educ Mega Ctr, Guangdong Prov Engn & Technol Res Ctr Environm Ri, Guangzhou 510006, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Mo, Shengpeng,Li, Shuangde,Ren, Quanming,et al. Vertically-aligned Co3O4 arrays on Ni foam as monolithic structured catalysts for CO oxidation: effects of morphological transformation[J]. NANOSCALE,2018,10(16):7746-7758.
APA Mo, Shengpeng.,Li, Shuangde.,Ren, Quanming.,Zhang, Mingyuan.,Sun, Yuhai.,...&Ye, Daiqi.(2018).Vertically-aligned Co3O4 arrays on Ni foam as monolithic structured catalysts for CO oxidation: effects of morphological transformation.NANOSCALE,10(16),7746-7758.
MLA Mo, Shengpeng,et al."Vertically-aligned Co3O4 arrays on Ni foam as monolithic structured catalysts for CO oxidation: effects of morphological transformation".NANOSCALE 10.16(2018):7746-7758.
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