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题名: FTIR Spectroscopy Study on Quantum Size Effect of CuOx Nanoparticles in CuOx/SiO2
作者: Su Wei-Guang1;  Ying Pin-Liang1;  Feng Zhao-Chi1;  Li Can1
关键词: CuOx ;  Quantum size effect ;  CO adsorption ;  FTIR spectroscopy
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2010-05-10
卷: 31, 期:5, 页:1014-1018
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The nanosized CuOx/SiO2 catalysts were prepared by homogeneous deposition method with urea as the deposition reagent. The sizes of CuOx nanoparticles were adjusted by changing calcination temperatures of CuOx/SiO2 samples. The size and morphology of CuOx nanoparticles were characterized by TEM, and the adsorption behavior of CO on CuOx nanoparticles was also studied by FTIR spectroscopy. With increasing the sizes of the spherical CuOx nanoparticles from 3 nm to 11 nm, the intensities of IR bands of adsorbed CO on Cu+ ions are gradually decreased, and the frequencies of adsorbed CO are also red shifted from 2135 cm(-1) to 2120 cm(-1). It shows that the electronic properties of Cu delta+ are changed with increasing the sizes of CuOx nanoparticles, namely, the quantum size effect controls CO adsorption on CuOx nanoparticles.
关键词[WOS]: COPPER NANOPARTICLES ;  CO OXIDATION ;  CATALYSTS ;  ADSORPTION ;  ZEOLITES ;  NO ;  IR
语种: 英语
WOS记录号: WOS:000278159700030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141672
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

Recommended Citation:
Su Wei-Guang,Ying Pin-Liang,Feng Zhao-Chi,et al. FTIR Spectroscopy Study on Quantum Size Effect of CuOx Nanoparticles in CuOx/SiO2[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2010,31(5):1014-1018.
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