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Oxygen vacancy enhanced catalytic activity of reduced Co3O4 towards p-nitrophenol reduction
Chen, Huihui1,2; Yang, Mei1; Tao, Sha1,2; Chen, Guangwen1
关键词Co3o4 Reduced Oxygen Vacancy P-nitrophenol Nabh4
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
2017-07-15
DOI10.1016/j.apcatb.2017.03.038
209页:648-656
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]METAL-ORGANIC FRAMEWORKS ; 4-NITROPHENOL REDUCTION ; GOLD NANOPARTICLES ; EFFICIENT CATALYSTS ; CONTROLLED POROSITY ; SODIUM-BOROHYDRIDE ; HIGH-PERFORMANCE ; GREEN SYNTHESIS ; LOW-TEMPERATURE ; CO OXIDATION
英文摘要With the aim of replacing noble metal-based catalysts, many efforts have been devoted to the development of highly active non-noble metal-based catalysts for the reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP) by NaBH4. As a typical transition metal oxide, pristine Co3O4 is normally considered to be poorly active towards the reduction of p-NP to p-AP. In this work, the catalytic activity of pristine Co3O4 was remarkably enhanced by a facile surface reduction with aqueous NaBH4. With the characterization results of various techniques such as XRD, TEM, H2-TPR and XPS, the enhancement in the catalytic activity was attributed to the oxygen vacancies generated during the surface reduction process. The catalytic activity of reduced Co3O4 was found to be strongly dependent on the reduction time and NaBH4 concentration used for catalyst preparation. Through the surface reduction with 0.05 mol/L aqueous NaBH4 for 40 min, the as-prepared reduced Co3O4 showed the best catalytic activity in term of the shortest induction time (<0.75 min) and highest mass-normalized rate constant (20.86 min(-1) g(-1) L). Furthermore, the as-prepared reduced Co3O4 displayed no obvious deactivation during the five successive cycles. (C) 2017 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000400584900065
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152018
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Chen, Huihui,Yang, Mei,Tao, Sha,et al. Oxygen vacancy enhanced catalytic activity of reduced Co3O4 towards p-nitrophenol reduction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,209:648-656.
APA Chen, Huihui,Yang, Mei,Tao, Sha,&Chen, Guangwen.(2017).Oxygen vacancy enhanced catalytic activity of reduced Co3O4 towards p-nitrophenol reduction.APPLIED CATALYSIS B-ENVIRONMENTAL,209,648-656.
MLA Chen, Huihui,et al."Oxygen vacancy enhanced catalytic activity of reduced Co3O4 towards p-nitrophenol reduction".APPLIED CATALYSIS B-ENVIRONMENTAL 209(2017):648-656.
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