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论文类型：期刊论文

发表时间：2010-04-01

发表刊物：15th International Symposium on Intercalation Compounds

收录刊物：SCIE、EI、CPCI-S

卷号：71

期号：4,SI

页面范围：642-646

ISSN号：0022-3697

关键字：Chalcogenides; Organometallic compounds; Chemical synthesis; Thermogravimetric analysis; X-ray diffraction

摘要：Unsupported MoS(2), WS(2) and Ni-MoS(2) sulfides have been successfully prepared by decomposition of tetraalkylammonium thiosalts, which were synthesized by using an aqueous solution of tetraalkylammonium halide and ammonium thiosalts at room temperature. The as-prepared samples were characterized by N(2) physorption, thermogravimetric analysis (TGA). X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results showed that structures and properties of unsupported binary and ternary sulfides depended on tetraalkylammonium thiosalts and decomposition conditions. The samples formed by decomposition of methyl and cetyltrimethyl substituted ammonium thiosalts exhibited high specific surface areas of above 100 m(2)/g, indicating the organic ligand in the precursor can tune the structure of the binary and ternary sulfides. MoS2 and Ni-MoS(2) prepared from TMetATM and Ni/TMetATM had a relative narrow distribution in mesoporous range. TEM and XRD results revealed that the unsupported binary and ternary sulfides consisted of few-stacked layers and Ni was well-dispersed on MoS(2). Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.