文献类型：期刊文献

英文题名：One-step synthesis of pure pyrite FeS2 with different morphologies in water

作者：Yuan, Binxia[1];Luan, Weiling[2];Tu, Shan-tung[2];Wu, Jiang[1]

机构：[1]Shanghai Univ Elect Power, Shanghai Engn Res Ctr Power Generat Environm Prot, Shanghai 200090, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Safety Sci Pressurized Syst, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：39

期号：5

起止页码：3571

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000354199900052)】；

基金：This study was supported by the financial support from the Fundamental Research Funds for National Nature Science Foundation of China (51172072, 21237003), the Innovation Program of Shanghai Municipal Education Commission (Z2014-070), and the Talent Fund of Shanghai University of Electric Power (K2014-004).

语种：英文

摘要：In this study, pyrite FeS2 with novel nanostructures had been obtained via an ethanolamine (ETA)-water binary system. This method provided a uniform and homogenous environment for the nucleation and growth of FeS2. When only pure water was used as the reaction solvent, marcasite FeS2 with a hollow sphere structure was achieved, and then transformed into the pyrite phase with a rod-like structure piled up by nanoparticles with the increase of the reaction time. Moreover, cubic, flake-like, and two types of tetrakaidecahedron structures were obtained via the adjustment of the volume ratio of ETA and H2O. The transformation mechanism from flower-like amorphous to different types of morphologies of pyrite FeS2 crystals was analyzed through the time-dependent controlled experiments. The Raman spectra of the samples with different morphologies were investigated, which were consistent with the XRD analysis. The studies of optical properties indicate that the morphologies had a great influence on the absorption properties. This study provided a very simple and low cost method to control the morphologies of FeS2 crystals, which would be of great potential for the synthesis of other metal chalcogenides and lay the foundation for the development of solar cells.