Synthesis and Characterization of Cadmium Sulfide Nanoparticles by Chemical Precipitation Method

被引：68

作者：

Devi, R. Aruna ^{[1
]}

Latha, M. ^{[1
]}

Velumani, S. ^{[1
,2
,3
]}

Oza, Goldie ^{[2
]}

Reyes-Figueroa, P. ^{[2
]}

Rohini, M. ^{[2
]}

Becerril-Juarez, I. G. ^{[1
]}

Lee, Jae-Hyeong ^{[4
]}

Yi, Junsin ^{[3
]}

机构：

[1] IPN, CINVESTAV, Program Nanosci & Nanotechnol, San Pedro Zacatenco, DF, Mexico

[2] IPN, CINVESTAV, Dept Elect Engn SEES, San Pedro Zacatenco, DF, Mexico

[3] Sungkyunkwan Univ, Sch Informat & Commun Engn, Suwon 440746, South Korea

[4] Sungkyunkwan Univ, Sch Elect & Elect Engn, Energy & Nano Photovolta Lab, Suwon 440746, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2015年 / 15卷 / 11期

关键词：

Cadmium Sulfide; Chemical Precipitation; Temperature Effect; HR-TEM; CDS NANOPARTICLES; OPTICAL CHARACTERIZATION; ROOM-TEMPERATURE; SIZE; NANOCRYSTALS; ENERGY;

D O I：

10.1166/jnn.2015.11472

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cadmium sulfide (CdS) nanoparticles were synthesized by chemical precipitation method using cadmium chloride (CdCl2), sodium sulfide (Na2S) and water as a solvent by varying temperatures from 20-80 degrees C. The nanoparticles were characterized by X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), High-resolution transmission electron microscopy (HR-TEM) and UV-Visible spectroscopy. XRD pattern revealed cubic crystal structure for all the synthesized CdS nanoparticles. Raman spectra showed first and second order longitudinal optical (LO) phonon vibrational modes of CdS. The size of CdS nanoparticles was found to be in the range of 15-80 nm by FE-SEM analysis, in all cases. The atomic percentage of cadmium and sulfur was confirmed to be 1:1 from EDS analysis. TEM micrograph depicts the spherical shape of the particles and the size is in the range of 15-85 nm while HR-TEM images of CdS nanoparticles exhibit well-resolved lattice fringes of the cubic structure of CdS. The optical properties of CdS were examined by UV-Visible spectroscopy which showed variation in absorption band from 460-480 nm. The band gap was calculated from the absorption edge and found to be in the range of 3.2-3.5 eV which is greater than the bulk CdS.

引用

页码：8434 / 8439

页数：6

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