期刊
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 30, 期 5, 页码 758-762出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2010.03.010
关键词
Biomimetic synthesis; X-ray diffraction; Hollow structure; Semiconducting materials
资金
- Natural Science Foundation of Shandong, China [Y2008F39]
- State Key Lab of Microbial Technology, Shandong University, China [M2008-06]
- Taishan scholarship program in the field of Glass and Ceramics
- Austrian Science Fund (FWF) [M2008] Funding Source: Austrian Science Fund (FWF)
Hollow cuprous oxide (Cu(2)O) microspheres with a diameter of ca. 1.81 mu m are prepared by using yeast as template. The possible mechanism for the formation of the hollow Cu(2)O spheres is revealed. The biotemplated sample is investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet-visible (UV-vis) absorption spectra. The sample consists of the crystalline Cu(2)O microspheres with diameters of about 59.5 nm and lattice parameter of 4.264 angstrom. The observed optical band gap of the product indicates that the blue-shift effect occurs, which is attributed to the hollow Cu(2)O microspheres. Crown Copyright (c) 2010 Published by Elsevier B.V. All rights reserved.
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