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题名: Synthesis of highly ordered ir-containing mesoporous carbon materials by organic-organic self-assembly
作者: Gao, Peng2;  Wang, Aiqin1;  Wang, Xiaodong1;  Zhang, Tao1
刊名: CHEMISTRY OF MATERIALS
发表日期: 2008-03-11
DOI: 10.1021/cm702815e
卷: 20, 期:5, 页:1881-1888
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: By simply adjusting the molar ratio of resorcinol (R) to formaldehyde (F) and optimizing the aging time of the gel, highly ordered mesoporous carbons (OMCs) have been synthesized under strong acidic conditions through aqueous self-assembly of R/F with triblock copolymer F127, without addition of any promoters. It was found that both the excess amount of R (R/F >= 1/2) and the long aging time (96 h) were favorable to the formation of the OMC. This facile route was further extended to the synthesis of highly ordered iridium-containing mesoporous carbons (Ir-OMC) by adding H2IrCl6 to the reaction mixture. The resultant Ir-OMCs were characterized by nitrogen sorption, X-ray diffraction (XRD), and transmission electron microscopy (TEM). The results showed that iridium particles, with sizes of similar to 2 nm, were highly dispersed in the carbon matrix, while the ordered mesostructure of carbons remained well. Comparing with the Ir/OMC sample prepared by postimpregnation, such one-pot synthesized Ir-OMC samples had smaller Ir particles sizes and therefore exhibited higher activities and stabilities toward the catalytic decomposition of N2H4.
关键词[WOS]: CATALYTIC DECOMPOSITION ;  PLATINUM NANOPARTICLES ;  METHANOL OXIDATION ;  NITRIDE CATALYSTS ;  FUEL-CELL ;  AEROGELS ;  HYDRAZINE ;  POLYMERS ;  HYDROGEN ;  SUPPORT
语种: 英语
WOS记录号: WOS:000253727400036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141070
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Gao, Peng,Wang, Aiqin,Wang, Xiaodong,et al. Synthesis of highly ordered ir-containing mesoporous carbon materials by organic-organic self-assembly[J]. CHEMISTRY OF MATERIALS,2008,20(5):1881-1888.
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