文献类型：期刊文献

英文题名：Synthesis and optical characterization of Co₃O₄ nanocrystals

作者：Gu, Feng; Li, Chunzhong; Hu, Yanjie; Zhang, Ling

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minist Educ, Shanghai 200237, Peoples R China

年份：2007

卷号：304

期号：2

起止页码：369

外文期刊名：JOURNAL OF CRYSTAL GROWTH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000247419600013)】；

语种：英文

外文关键词：low-dimensional structures; X-ray diffraction; nanomaterials

摘要：Cobalt oxide (Co3O4) nanocrystals have been synthesized successfully via a facile combustion method. The Li ions incorporated into the Co3O4 lattice should serve as a self-promoter for the crystallization, resulting in the drastic increase of particle size. The Li addition can complex the structure of the energy band gap. The optical absorption spectra indicate that the direct band gap of Co3O4 varied from 3.11 and 1.62 to 3.29-3.98 eV after introducing Li ions. This approach provides economically viable route for large-scale synthesis of this kind of nanomaterials. (c) 2007 Elsevier B.V. All rights reserved.