In situ oxidation of carbon-encapsulated cobalt nanocapsules creates highly active cobalt oxide catalysts for hydrocarbon combustion.
In situ oxidation of carbon-encapsulated cobalt nanocapsules creates highly active cobalt oxide catalysts for hydrocarbon combustion.
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碳包封的钴纳米胶囊的原位氧化可产生用于碳氢化合物燃烧的高活性氧化钴催化剂
DOI:
10.1038/ncomms8181
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发表时间:
2015-06-15
影响因子:
16.6
通讯作者:
Zhang, Jian
中科院分区:
文献类型:
--
作者:
Wang, Han;Chen, Chunlin;Zhang, Yexin;Peng, Lixia;Ma, Song;Yang, Teng;Guo, Huaihong;Zhang, Zhidong;Su, Dang Sheng;Zhang, Jian
Combustion catalysts have been extensively explored to reduce the emission of hydrocarbons that are capable of triggering photochemical smog and greenhouse effect. Palladium as the most active material is widely applied in exhaust catalytic converter and combustion units, but its high capital cost stimulates the tremendous research on non-noble metal candidates. Here we fabricate highly defective cobalt oxide nanocrystals via a controllable oxidation of carbon-encapsulated cobalt nanoparticles. Strain gradients induced in the nanoconfined carbon shell result in the formation of a large number of active sites featuring a considerable catalytic activity for the combustion of a variety of hydrocarbons (methane, propane and substituted benzenes). For methane combustion, the catalyst displays a unique activity being comparable or even superior to the palladium ones. Palladium is an effective but expensive catalyst used in catalytic converters. Here, the authors show that defective Co3O4 nanocrystals, synthesized via oxidation of carbon-encapsulated cobalt nanoparticles, display similar or even comparable catalytic activity to palladium for hydrocarbon combustion.
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影响因子:
41.2
作者:
Lee, Ilkeun;Delbecq, Francoise;Zaera, Francisco
通讯作者:
Zaera, Francisco
影响因子:
7.3
作者:
Beck, Irene E.;Bukhtiyarov, Valerii I.;Parmon, Valentin N.
通讯作者:
Parmon, Valentin N.
影响因子:
12.9
作者:
Zhu, Zengzan;Lu, Guanzhong;Wang, Yanqin
通讯作者:
Wang, Yanqin
影响因子:
3.7
作者:
Ha, Don-Hyung;Moreau, Liane M.;Robinson, Richard D.
通讯作者:
Robinson, Richard D.
影响因子:
1.2
作者:
Jian, ZY;Kuribayashi, K;Jie, WQ
通讯作者:
Jie, WQ