Shape-controlled synthesis and self-assembly of hexagonal covellite (CuS) nanoplatelets

被引:155
作者
Du, Weimin [1 ]
Qian, Xuefeng [1 ]
Ma, Xiaodong [1 ]
Gong, Qiang [1 ]
Cao, Hongliang [1 ]
Yin, He [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China
关键词
covellite; crystal growth; metal sulfides; nanoplatelets; self-assembly;
D O I
10.1002/chem.200601368
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Single-crystalline, hexagonal covellite (CuS) nanoplatelets were successfully synthesized through a facile, inexpensive, reproducible, and improved solvothermal process in toluene at 120 degrees C for 24 h with hexadecylamine as a capping agent and copper acetate and carbon disulfide as precursors. These nanoplatelets are about 26 1.5nm in diameter and 8 +/- 1.2nm thick, and have a tendency to self-assemble into pillarlike nanostructures with face-to-face stacks, raftlike nano-structures with side-by-side arrays, and stratiform nanostructufes with layerby-layer self-assembly. The crystal shape, morphology, and crystallographic orientation of the covellite obtained were investigated by means of XRD, TEM, and high-resolution TEM, and a potential self-assembly mechanism was proposed.
引用
收藏
页码:3241 / 3247
页数:7
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