Please use this identifier to cite or link to this item: http://essuir.sumdu.edu.ua/handle/123456789/31948
Or use following links to share this resource in social networks: Recommend this item
Title Effect of pH Variation on the Structural and Optoelectronic Properties of Zinc Sulfide Nanoparticles Capped with Sodium Carboxymethyl Cellulose
Authors Ahemen, I.
Meludu, O.
Odoh, E.
ORCID
Keywords pH value
Zinc sulfide
Nanoparticles
Sodium carboxymethyl cellulose
Stability
Precipitation
Type Article
Date of Issue 2013
URI http://essuir.sumdu.edu.ua/handle/123456789/31948
Publisher Сумський державний університет
License
Citation I. Ahemen, O. Meludu, E. Odoh, J. Nano- Electron. Phys. 5 No 3, 03016 (2013)
Abstract This work presents the required pH value for the synthesis of ZnS semiconductor nanocrystals capped with sodium carboxymethyl cellulose (CMC). The nanoparticles were synthesized using the precipitation technique. Structural, morphological and optical properties of nanoparticles synthesized at different pH values were investigated using X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), UV-Vis spectroscopy and photoluminescence studies (PL). The structure of the nanoparticles is predominantly cubic zinc blende except for nanoparticles synthesized at pH 10 which is oxidized. All samples show agglomeration of particles with smooth surfaces. FTIR spectrum confirms the interaction of ZnS with CMC. The energy band gap shows stoke shift of 0.53-0.60 eV indicating quantum confinement effect. The obtained results show that nanoparticles stability is obtained at pH value of 4.0, 7.0 and 8.0 of precursor-surfactant mixture. These pH values maintain the viscosity of sodium carboxymethyl cellulose and hence the stability of nanoparticles over time. PL shows enhanced emission intensity for samples at these three pH values. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/31948
Appears in Collections: Журнал нано- та електронної фізики (Journal of nano- and electronic physics)

Views

Canada Canada
2
China China
1176005
Czechia Czechia
1
Estonia Estonia
1
Finland Finland
1
France France
2
Germany Germany
392004
Ghana Ghana
392006
Greece Greece
1
Hong Kong SAR China Hong Kong SAR China
1
India India
1
Indonesia Indonesia
1
Ireland Ireland
121450
Lithuania Lithuania
1
Russia Russia
6
Turkey Turkey
3
Ukraine Ukraine
69474384
United Kingdom United Kingdom
2352001
United States United States
212875880
Unknown Country Unknown Country
4696784
Vietnam Vietnam
19241

Downloads

Canada Canada
1
China China
16
Finland Finland
1
Germany Germany
8
India India
1
Lithuania Lithuania
1
Russia Russia
1
Singapore Singapore
1
Ukraine Ukraine
4696786
United Kingdom United Kingdom
1
United States United States
212875879
Unknown Country Unknown Country
120
Vietnam Vietnam
1

Files

File Size Format Downloads
Ahemen_Precipitation.pdf 659.8 kB Adobe PDF 217572817

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.