Controlled synthesis and characterization of covellite (CuS) nanoflakes

被引：78

作者：

Zhang, H. T.

Wu, G.

Chen, X. H. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2006年 / 98卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

II-VI semiconductors; optical properties; nanophase materials; crystal morphology; growth from solutions;

D O I：

10.1016/j.matchemphys.2005.09.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Trigonal and hexagonal CuS (covellite) nanoflakes with controlled size (10-200 nm, and thickness of 3.6-5 nm) were synthesized through the reaction between copper acetylacetonate and sulfur in oleylamine. Size and shape of the products could be tuned by reaction parameters and reactant concentration. The as-prepared flakes have smooth surfaces and self-assemble face-to-face each other. High-resolution transmission electron microscopy and electron diffraction show that the nanoscale flakes were single-crystal hexagonal covellite. Formation mechanism of the nanoflakes is discussed. UV-vis spectra reveal that the samples have blue-shift absorbance onsets owning to the quantum size effects. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：298 / 303

页数：6

共 44 条

[11] Seed-mediated synthesis of gold nanorods: Role of the size and nature of the seed [J].