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Tailoring the Oxidation Activity of Pt Nanoclusters via Encapsulation
Zhang, Fan1; Jiao, Feng1; Pan, Xiulian1; Gao, Kang2; Xiao, Jianping1; Zhang, Shuo3; Bao, Xinhe1
关键词Platinum Cluster Confined Catalysis Carbon Nanotube Toluene Oxidation
刊名ACS CATALYSIS
2015-02-01
DOI10.1021/cs501763k
5期:2页:1381-1385
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]ORGANIC-COMPOUNDS VOCS ; CARBON NANOTUBES ; CATALYTIC-OXIDATION ; METAL-CLUSTERS ; PLATINUM CLUSTERS ; OXYGEN REDUCTION ; PARTICLE-SIZE ; O-XYLENE ; TOLUENE ; HYDROGENATION
英文摘要To tailor the catalytic activities of metal catalysts at will to achieve efficient conversion in chemical processes remains a challenge, particularly for noble metals, such as Pt. We demonstrate herein that encapsulation within the carbon nanotube (CNT) channels with a diameter of 1.0-1.5 nm not only allows restriction of the size of Pt nanoclusters around 1.0 nm but also enables modulating of the Pt species at the active reduced states through host guest interaction. The encapsulated Pt is protected from oxygen under reaction conditions in toluene oxidation up to 200 degrees C, as unveiled by in situ X-ray absorption spectroscopy and density functional theory calculations. As a result, the encapsulated Pt clusters deliver a remarkably higher activity and stability than the clusters located on the open surfaces of the CNT exterior walls and carbon black support, although the latter are much more accessible to reactants. This characteristic of the CNT channels can be explored to tune the properties of other metal catalysts for oxidation reactions.
语种英语
WOS记录号WOS:000349275300097
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145982
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Chem Engn, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
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Zhang, Fan,Jiao, Feng,Pan, Xiulian,et al. Tailoring the Oxidation Activity of Pt Nanoclusters via Encapsulation[J]. ACS CATALYSIS,2015,5(2):1381-1385.
APA Zhang, Fan.,Jiao, Feng.,Pan, Xiulian.,Gao, Kang.,Xiao, Jianping.,...&Bao, Xinhe.(2015).Tailoring the Oxidation Activity of Pt Nanoclusters via Encapsulation.ACS CATALYSIS,5(2),1381-1385.
MLA Zhang, Fan,et al."Tailoring the Oxidation Activity of Pt Nanoclusters via Encapsulation".ACS CATALYSIS 5.2(2015):1381-1385.
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