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题名: Highly active Au-1/Co3O4 single-atom catalyst for CO oxidation at room temperature
作者: Qiao, Botao1, 2;  Lin, Jian2;  Wang, Aiqin2;  Chen, Yang2;  Zhang, Tao2;  Liu, Jingyue1, 2
关键词: Single-atom catalysis ;  Noble metal ;  Gold ;  Carbon monoxide ;  Cobalt oxide ;  Low temperature
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2015-09-01
DOI: 10.1016/S1872-2067(15)60889-0
卷: 36, 期:9, 页:1505-1511
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: CO oxidation is of great importance in both fundamental studies and practical applications. Oxide-supported noble metal catalysts are well known to be excellent CO oxidation catalysts. However, the high cost and limited supply of these noble metals pose significant challenges for sustainable applications. Maximizing the atom efficiency of supported noble metal catalysts is therefore highly desirable. In this work, a Co3O4 supported Au single-atom catalyst with very low Au (0.05 wt%) loading has been developed. This catalyst showed extremely high activity for CO oxidation and exhibited total conversion of CO at room temperature. The high activity originates from the isolated Au atoms distributed on the Co3O4 nanocrystallites, although the exact catalytic mechanism is still under investigation. The catalyst deactivation observed during the CO oxidation was attributed to the accumulation of CO2 rather than sintering of the single Au atoms. This extremely low loading of Au coupled to high activity is critical to reducing the cost of noble metal catalysts and making them more practical and attractive. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: TRANSITION-METAL OXIDES ;  CARBON-MONOXIDE ;  FERRIC HYDROXIDE ;  PREFERENTIAL OXIDATION ;  SELECTIVE OXIDATION ;  GOLD CATALYSTS ;  PERFORMANCE ;  CO3O4 ;  GAS ;  MECHANISM
语种: 英语
WOS记录号: WOS:000361084300010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146519
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Qiao, Botao,Lin, Jian,Wang, Aiqin,et al. Highly active Au-1/Co3O4 single-atom catalyst for CO oxidation at room temperature[J]. CHINESE JOURNAL OF CATALYSIS,2015,36(9):1505-1511.
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