Preparation and characterization of CdSe nanocrystals via Na2SO3-assisted photochemical route

被引：49

作者：

Yan, YL ^{[1
]}

Li, Y ^{[1
]}

Qian, XF ^{[1
]}

Yin, J ^{[1
]}

Zhu, ZK ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Res Inst Polymer Mat, State Key Lab Composite Mat, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2003年 / 103卷 / 02期

基金：

中国国家自然科学基金;

关键词：

photo-irradiation; semiconductors; cadmium selenide; selenide; nanoparticles;

D O I：

10.1016/S0921-5107(03)00155-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cadmium selenide (CdSe) nanocrystals have been synthesized in aqueous solution with Se as precursor via photo-irradiation at room temperature with the help of Na2SO3. The obtained products were analyzed through X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible absorption spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS). The results showed that CdSe nanoparticles with cubic phase were aggregated to an average size of 25 nm. The experiments also confirmed that Na2SO3, cetyltrimethylammonium bromide (CTAB) and trisodium citrate (TSC) played important roles in the formation of CdSe nanocrystals. The possible mechanism for the formation of CdSe nanocrystals is also proposed. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：202 / 206

页数：5

共 31 条

[1] Quantum dot bioconjugates for ultrasensitive nonisotopic detection [J].