Synthesis and characterizations of polycrystalline walnut-like CdS nanoparticle by solvothermal method with PVP as stabilizer

被引：49

作者：

Xia, Qing ^{[1
,2
]}

Chen, Xing ^{[1
]}

Zhao, Kai ^{[1
]}

Liu, Jinhuai ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Intelligent Machine, Key Lab Biomimet Sensing & Adv Robot Technol, Hefei 230031, Anhui, Peoples R China

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

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 111卷 / 01期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

CdS nanoparticle; PVP; solvothermal synthesis; crystal characterizations;

D O I：

10.1016/j.matchemphys.2008.03.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A wide range of cadmium sulfide (CdS) 3D polycrystalline walnut-like nanocrystals were prepared by solvothermal method with polyvinyl pyrrol idone (PVP) as stabilizer. The morphology, structure, and phase composition of the as-prepared CdS nanoparticles were examined by using various techniques (X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED)). The optical properties of CdS were characterized by photoluminescence (PL) spectra. The paper showed that when the proper dosage of PVP (0.12g50mL(-1))and the temperatureof reaction (120 degrees C) were taken, continuous polycrystallinenanoparticles with regular morphology were obtained. The mechanism for the PVP-assisted synthesis of US 3D nanostructures and the growth process of CdS nanoparticles via Ostwald Ripening process under different temperatures with different dosages of PVP were also investigated. A sensitive electrochemical detection device of DNA hybridization using a paste glass carbon electrode (GCE) assembled by the PVP-capped US nanoparticles and immobilizing DNA probe was developed as a novel application of nano-semiconductors such as US to achieve a notable amplification in sensor response. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：98 / 105

页数：8

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