ICCAS OpenIR
p-Aminophenylacetic acid-mediated synthesis of monodispersed titanium oxide hybrid microspheres in ethanol solution
Zhang, Hongye; Xie, Yun; Liu, Zhimin; Tao, Ranting; Sun, Zhenyu; Ding, Kunlun; An, Guimin
2009-10-15
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume338Issue:2Pages:468-473
AbstractMonodispersed TiO(2) hybrid microspheres were prepared via the hydrolysis of titanium isopropoxide (TTIP) in ethanol solution containing p-aminophenylacetic acid (APA). The effects of the APA: TTIP molar ratio, water content, reaction time and reaction temperature on the morphology of the resultant spheres were investigated. The products were characterized by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction. It was demonstrated that the diameters of the resultant TiO(2) spheres could be tuned in the range of 380-800 nm by changing the APA: TTIP molar ratio (1:3 to 3:1) and water content (1-3 v/v%) in the reaction medium, and that increasing the APA: TTIP molar ratio led to larger TiO(2) hybrid spheres while increasing the water content decreased their size. The loading content of APA in the hybrid spheres could reach 20 wt.% as they were prepared with the APA: TTIP ratio of 3:1. The possible formation mechanism of the hybrid spheres was also investigated. It was found that APA slowed down the hydrolysis rate of the titanium precursor so that resulted in the formation of the TiO(2) spheres. In addition, the APA present in TiO(2) spheres acted as a reducing agent to in situ convert HAuCl(4) into metallic Au on the surface of the TiO(2) spheres. The catalytic activity of the resultant Au/APA-TiO(2) composite was examined using transfer hydrogenation of phenylacetone with 2-propanol, and it was indicated that the catalyst displayed high efficiency for this reaction. (C) 2009 Elsevier Inc. All rights reserved.
KeywordTio(2) Hybrid Spheres Synthesis
DOI10.1016/j.jcis.2009.06.046
Indexed BySCI
Language英语
WOS IDWOS:000272262700018
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67460
Collection中国科学院化学研究所
Corresponding AuthorLiu, Zhimin
AffiliationChinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Hongye,Xie, Yun,Liu, Zhimin,et al. p-Aminophenylacetic acid-mediated synthesis of monodispersed titanium oxide hybrid microspheres in ethanol solution[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2009,338(2):468-473.
APA Zhang, Hongye.,Xie, Yun.,Liu, Zhimin.,Tao, Ranting.,Sun, Zhenyu.,...&An, Guimin.(2009).p-Aminophenylacetic acid-mediated synthesis of monodispersed titanium oxide hybrid microspheres in ethanol solution.JOURNAL OF COLLOID AND INTERFACE SCIENCE,338(2),468-473.
MLA Zhang, Hongye,et al."p-Aminophenylacetic acid-mediated synthesis of monodispersed titanium oxide hybrid microspheres in ethanol solution".JOURNAL OF COLLOID AND INTERFACE SCIENCE 338.2(2009):468-473.
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