文献类型：期刊文献

英文题名：A novel yeast bio-template route to synthesize Cr2O3 hollow microspheres

作者：Bai, Bo[1]; Wang, Pengpeng[1]; Wu, Le[2]; Yang, Li[1]; Chen, Zhihong[1]

机构：[1] Institute of Environmental Science and Engineering, Chang'an University, Xi'an, Shaanxi 710054, China; [2] Institute of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2009

卷号：114

期号：1

起止页码：26

外文期刊名：Materials Chemistry and Physics

收录：EI(收录号：20090311861960)

语种：英文

外文关键词：Surface treatment - Protective coatings - Chlorine compounds - Microspheres - X ray diffraction - Yeast - Scanning electron microscopy

摘要：Chromium oxide (Cr2O3) hollow microspheres were successfully prepared by using spherical yeast as a natural bio-template and chromium chloride hexahydrate (CrCl3·6H2O) as chromium source, which involved the deposition of inorganic coatings on the surface of yeast cells and subsequent thermal dehydration. Various approaches including X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transformed infrared (FT-IR) spectroscopy were used to characterize the intermediate and the final products. The results showed that the thermally treated samples were Cr2O3 hollow microspheres with a diameter varying between 2.5 μm and 2.8 μm. The possible mechanism for the formation of Cr2O3 hollow microspheres is proposed. This study provided a promising route for the preparation of a variety of hollow microspheres. Crown Copyright ? 2008.