Monodisperse cubic pyrite NiS2 dodecahedrons and microspheres synthesized by a solvothermal process in a mixed solvent: thermal stability and magnetic properties

被引：146

作者：

Yang, Shi-Liu ^{[1
]}

Yao, Hong-Bin ^{[1
]}

Gao, Min-Rui ^{[1
]}

Yu, Shu-Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Lab Phys Sci Microscale, Sch Chem & Mat, Hefei 230026, Peoples R China

来源：

CRYSTENGCOMM | 2009年 / 11卷 / 07期

基金：

美国国家科学基金会;

关键词：

NICKEL SULFIDE; OPTICAL-PROPERTIES; ROUTE; DICHALCOGENIDES; NANOPARTICLES; DISULFIDE; NANOTUBES; NANORODS; POWDERS; SURFACE;

D O I：

10.1039/b900444k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Monodisperse cubic pyrite NiS2 dodecahedrons and microspheres with a diameter of 6 mu m have been synthesized by a solvothermal approach in ethylenediamine-glycol mixed solvent at 200 degrees C using NiCl2 center dot 6H(2)O and sulfur as precursors. The morphology and the phase transformation of the products were found to be strongly dependent on the reaction temperature, reaction time, and the volume ratio of ethylenediamine to glycol. The thermal stability of the pyrite NiS2 dodecahedrons has been studied and they can act as excellent templates for synthesis of porous NiO microspheres by calcination in air. The NiS2 dodecahedrons show antiferromagnetic properties between 10 and 300 K. The present solvothermal approach in a mixed solvent system may allow to synthesize other metal chalcogenides with unique shapes and structures.

引用

页码：1383 / 1390

页数：8

共 59 条

[1] Selective synthesis of Ni3S4 nanocrystallites with hollow structures through a solution-phase approach [J].