Shape controlled growth of pyrite FeS2 crystallites via a polymer-assisted hydrothermal route

被引:65
作者
Wang, Dewei [1 ,2 ]
Wang, Qihua [1 ]
Wang, Tingmei [1 ]
机构
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China
来源
CRYSTENGCOMM | 2010年 / 12卷 / 11期
关键词
TRANSITION-METAL DICHALCOGENIDES; GAS-SENSING PROPERTIES; NANOCRYSTALLINE FES2; MAGNETIC-PROPERTIES; COAXIAL NANOCABLES; POLYOL SYNTHESIS; CUPROUS-OXIDE; NANOPARTICLES; SEMICONDUCTOR; NANOWIRES;
D O I
10.1039/c004266h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Well-defined pyrite FeS2 microcubes and micro-octahedra with high-yield and good uniformity were successfully synthesized by a convenient and simple polymer-assisted hydrothermal method. Employing S as sulfur source and FeCl2 center dot 4H(2)O as the precursor in the presence of polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA), cube-shaped and octahedron-shaped pyrite FeS2 crystallites were successfully obtained by simply adjusting the NaOH concentration, and the size of the product can be readily tuned by varying the reaction parameters. The effects of various NaOH concentrations and the polymer dosage on the morphology evolution process were investigated systematically. The phase composition, morphology, structure, and properties of the as-obtained products were studied by X-ray diffraction, field emission scanning electron microscopy, (high-resolution) transmission electron microscopy, Fourier transform-infrared spectroscopy, X-ray photoelectron spectrometry, and UV-Vis spectrometry. It was found that besides the capping effect of the polymer reagents, the "synergistic effect" or "cooperative effect" between the PVA and the PVP also played a crucial role in directing the growth of the FeS2 crystallites. The possible formation mechanism of the FeS2 phase and morphology was tentatively proposed based on a series of contrast experiments. Moreover, the optical properties were also preliminarily studied. This method can be easily controlled and is expected to be extendable to the fabrication of other metal chalcogenides with controlled shape and structure.
引用
收藏
页码:3797 / 3805
页数:9
相关论文
共 81 条
[21]   Synthesis of polyhedral ZnSnO3 microcrystals with controlled exposed facets and their selective gas-sensing properties [J].
Geng, Baoyou ;
Fang, Caihong ;
Zhan, Fangming ;
Yu, Nan .
SMALL, 2008, 4 (09) :1337-1343
[22]   THE REACTIVITY AND STABILITY OF MIXED-SULFIDE STRUCTURES IN UNSUPPORTED MOS2-BASED HYDRODESULFURIZATION CATALYSTS PROMOTED BY GROUP-VIII METALS [J].
GOBOLOS, S ;
WU, Q ;
DELANNAY, F ;
GRANGE, P ;
DELMON, B ;
LADRIERE, J .
POLYHEDRON, 1986, 5 (1-2) :219-224
[23]   Synthesis of Tin Dioxide Octahedral Nanoparticles with Exposed High-Energy {221} Facets and Enhanced Gas-Sensing Properties [J].
Han, Xiguang ;
Jin, Mingshang ;
Xie, Shuifen ;
Kuang, Qin ;
Jiang, Zhiyuan ;
Jiang, Yaqi ;
Xie, Zhaoxiong ;
Zheng, Lansun .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (48) :9180-9183
[24]   Magnetic-field-induced phase-selective synthesis of ferrosulfide microrods by a hydrothermal process: Microstructure control and magnetic properties [J].
He, Zhubing ;
Yu, Shu-Hong ;
Zhou, Xiaoyuan ;
Li, Xiaoguang ;
Qu, Jifeng .
ADVANCED FUNCTIONAL MATERIALS, 2006, 16 (08) :1105-1111
[25]   Chemistry and physics in one dimension: Synthesis and properties of nanowires and nanotubes [J].
Hu, JT ;
Odom, TW ;
Lieber, CM .
ACCOUNTS OF CHEMICAL RESEARCH, 1999, 32 (05) :435-445
[26]   Shape control of semiconductor and metal oxide nanocrystals through nonhydrolytic colloidal routes [J].
Jun, Young-wook ;
Choi, Jin-sil ;
Cheon, Jinwoo .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (21) :3414-3439
[27]   Synthesis and characterization of pyrite (FeS2) using microwave irradiation [J].
Kim, Eun Jung ;
Batchelor, Bill .
MATERIALS RESEARCH BULLETIN, 2009, 44 (07) :1553-1558
[28]   Platonic gold nanocrystals [J].
Kim, F ;
Connor, S ;
Song, H ;
Kuykendall, T ;
Yang, PD .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (28) :3673-3677
[29]   Polyol synthesis of Cu2O nanoparticles:: use of chloride to promote the formation of a cubic morphology [J].
Kim, Mun Ho ;
Lim, Byungkwon ;
Lee, Eric P. ;
Xia, Younan .
JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (34) :4069-4073
[30]   Enhanced gas sensing by individual SnO2 nanowires and nanobelts functionalized with Pd catalyst particles [J].
Kolmakov, A ;
Klenov, DO ;
Lilach, Y ;
Stemmer, S ;
Moskovits, M .
NANO LETTERS, 2005, 5 (04) :667-673