Facile synthesis of WSe2 nanoparticles and carbon nanotubes

被引：25

作者：

Pol, Swati V. ^{[1
]}

Pol, Vilas G. ^{[1
]}

Calderon-Moreno, Jose M. ^{[2
,3
]}

Gedanken, Aharon ^{[1
]}

机构：

[1] Bar Ilan Univ, Ctr Adv Mat & Nanotechnol, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Univ Politecn Cataluna, Dept Appl Phys, Barcelona 08860, Spain

[3] Romanian Acad, Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 14期

关键词：

D O I：

10.1021/jp7119685

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A single-step, nonaqueous, solventless, facile chemical reaction is carried out to synthesize a WSe2 nanoparticles/carbon nanotubes [WSe2/C] Composite at moderate temperature. The use of highly toxic H2Se gas is avoided, reacting elemental selenium powder with W(CO)(6) at 750 degrees C under their autogenic pressure in a closed reactor. Without further processing the as-prepared WSe2/C nanocomposite, detailed characterizations are carried out, and a proposed reaction mechanism is discussed. X-ray diffraction measurements are consistent with the hexagonal phase of WSe2, and the highly crystalline nature of WSe2 nanoparticles is also confirmed by high-resolution transmission electron Microscopy pictures. Scanning electron microscopy measurements reveal that WSe2 nanoparticles and carbon nanotubes are formed, with the composition being tracked by C, H, N, S and energy-dispersive X-ray analysis. The Brunauer, Emmett, and Teller surface area analysis technique is implemented for the determination of nitrogen gas adsorption on the surface of the WSe2/C nanocomposite.

引用

页码：5356 / 5360

页数：5

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