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Low-temperature CO oxidation over integrated penthorum chinense-like MnCo2O4 arrays anchored on three-dimensional Ni foam with enhanced moisture resistance
Mo, Shengpeng1,2; Li, Shuangde2,3; Xiao, Hailin1; He, Hui1; Xue, Yudong2; Zhang, Mingyuan1; Ren, Quanming1; Chen, Bingxu1; Chen, Yunfa2,3; Ye, Daiqi1,4,5
2018-03-21
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume8Issue:6Pages:1663-1676
Abstract

Advanced integrated nanoarray (NA) catalysts have been designed by growing metal-doped Co3O4 arrays on nickel foam with robust adhesion. Ternary MCo2O4 NA catalysts were prepared by doping urchin-like Co3O4 with different transition metals (Cu2+, Mn2+, Fe2+, Ni2+, Zn2+, Fe3+ and Al3+). These catalysts exhibited novel morphologies and can be directly applied as monolithic materials for CO oxidation. Among the MCo2O4 NA catalysts, CuCo2O4 nanoneedles manifested the highest catalytic activity in dry air, achieving an efficient 100% CO oxidation conversion of 20000 h(-1) at 146 degrees C, due to its reducibility at lower temperature, lattice distortion of the spinel structure, and abundant surface-adsorbed oxygen (O-ads). The doped catalytic systems were further optimized by controlling the volume ratio of reactive components in the mixed solvent, the Cu or Mn contents to determine excellent catalysts for direct application to CO oxidation at 1.0 vol% moisture. Penthorum chinense-like MnCo2O4 NAs showed optimal catalytic performance at 1 vol% moisture (T-100 = 175 degrees C), with activity higher than that of the CuCo2O4 NA catalyst, indicating that the synergistic effect between MnOx and Co3O4 improved the moisture resistance and stability. It was concluded that the moisture resistance provided by introducing active sites on Co-based catalysts decreased as follows: Mn sites > Co sites > Cu sites > Ni sites. MCo2O4 NAs, with predominantly exposed {110} surfaces, showed higher catalytic activity than catalysts with exposed {111} surfaces. This study suggests that the as-prepared MnCo2O4 NAs anchored on 3D Ni foam with remarkable moisture resistance have potential applications in CO oxidation.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c7cy02474f
Indexed BySCI
Language英语
WOS KeywordOperando Raman-spectroscopy ; Metal-support Interactions ; Layered Double Hydroxides ; De-nox Catalysts ; Co3o4 Nanorods ; Formaldehyde Oxidation ; Monolithic Catalysts ; Benzene Oxidation ; Oxide Catalysts ; Performance
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Key RD plan(2017YFC0211503) ; National Natural Science Foundation of China(51108187 ; State Key Laboratory of Multi-Phase Complex Systems(MPCS-2017-D-06) ; 51672273 ; 21401200)
WOS IDWOS:000428087400018
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24104
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,Xiao, Hailin,et al. Low-temperature CO oxidation over integrated penthorum chinense-like MnCo2O4 arrays anchored on three-dimensional Ni foam with enhanced moisture resistance[J]. CATALYSIS SCIENCE & TECHNOLOGY,2018,8(6):1663-1676.
APA Mo, Shengpeng.,Li, Shuangde.,Xiao, Hailin.,He, Hui.,Xue, Yudong.,...&Ye, Daiqi.(2018).Low-temperature CO oxidation over integrated penthorum chinense-like MnCo2O4 arrays anchored on three-dimensional Ni foam with enhanced moisture resistance.CATALYSIS SCIENCE & TECHNOLOGY,8(6),1663-1676.
MLA Mo, Shengpeng,et al."Low-temperature CO oxidation over integrated penthorum chinense-like MnCo2O4 arrays anchored on three-dimensional Ni foam with enhanced moisture resistance".CATALYSIS SCIENCE & TECHNOLOGY 8.6(2018):1663-1676.
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