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Title: Tailored synthesis of CoOX thin films for catalytic application
Author: Fan, Shi-Bin1, 2; Pan, Guan-Fu1, 2; Liang, Jing1; Tian ZhenYu(田振玉)1
Source: RSC ADVANCES
Issued Date: 2015
Volume: 5, Issue:118, Pages:97272-97278
DOI: 10.1039/c5ra20013j
DOC Type: Article
English Abstract: Cobalt oxide thin films were systematically synthesized on an inert carrier by pulsed-spray evaporation chemical vapor deposition (PSE-CVD). The effect of substrate temperature on the structure, morphology and surface composition of the prepared films was investigated by XRD, FTIR, SEM and XPS spectroscopies. An in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) and a gas chromatograph (GC) were involved to identify the surface and gaseous species occurring in the total oxidation of propene as a representative of VOCs, respectively. The structural analysis indicated that the obtained thin films transformed from CoO to pure Co3O4 spinel as the temperature rose from 350 to 450 degrees C. A homogeneous grain distribution was observed. For all samples, oxygen was mainly composed of lattice oxygen and adsorbed oxygen constituted a minor proportion. The catalytic tests showed that all the thin films exhibited competitive performances to those of noble metals. According to the observed adsorption peaks of propene at low-temperature and transformation of CoO-Co3O4 from the in situ DRIFTS spectra, a combined redox and L-H mechanism was proposed for the catalytic oxidation of propene over cobalt oxide films. The porous structure and adsorbed oxygen on the film surface may well contribute to the catalytic oxidation of propene.
WOS Headings: Science & Technology ; Physical Sciences
WOS Subject: Chemistry, Multidisciplinary
WOS Subject Extended: Chemistry
WOS Keyword Plus: VOLATILE ORGANIC-COMPOUNDS ; METAL-OXIDE CATALYSTS ; COBALT OXIDE ; TOTAL OXIDATION ; LOW-TEMPERATURE ; SPRAY-PYROLYSIS ; COMBUSTION ; CO3O4 ; PROPENE ; SPINEL
Indexed Type: SCI
Funder: Recruitment Program of Global Youth Experts
Language: 英语
WOS ID: WOS:000365220100023
Citation statistics:
Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112306
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Fan, Shi-Bin,Pan, Guan-Fu,Liang, Jing,et al. Tailored synthesis of CoOX thin films for catalytic application[J]. RSC ADVANCES,2015,5(118):97272-97278.
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