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Synthesis and optical properties of composites based on ternary Zn (sub 1-x) Cd (sub x) S nanoparticles enclosed in a layered octosilicate

Y. Chen, Z. Yu, G. Yu and Y. Yan
Synthesis and optical properties of composites based on ternary Zn (sub 1-x) Cd (sub x) S nanoparticles enclosed in a layered octosilicate
Clay Minerals (December 2014) 49 (5): 703-716

Abstract

In order to improve the optical properties and enhance the stability of Zn (sub 1-x) Cd (sub x) S nanoparticles, which are important optoelectrical materials, the ternary Zn (sub 1-x) Cd (sub x) S nanoparticles were enclosed in a layered octosilicate by a three-step process, namely (i) protonation of Na-octosilicate, (ii) ion-exchange in order to introduce Zn and Cd ions into the interlayer space, and (iii) addition of S (super 2-) to form Zn (sub 1-x) Cd (sub x) S particles in the interlayer space of the octosilicate. The basal spacing ( approximately 10 Aa) of the final ZnCdS-Oct-n (n = 1, 2, 3, 4) composites noticeably increased in comparison with that of the precursor H-Oct (7.5 Aa). This may be attributed to the incorporation of larger size Zn (sub 1-x) Cd (sub x) S particles into the interlayer space of H-Oct. The UV-visible spectra of the composites suggested that the transmission band-edges gradually shifted to low energy with increasing molar ratio of Cd/Zn. Moreover, the transmission band-edges of the composites are between those of layered Octosilicate, ZnS, and CdS. TEM observation confirmed that the size of Zn (sub 1-x) Cd (sub x) S nanoparticles enclosed in the layered silicate was about approximately 3-5 nm.


ISSN: 0009-8558
EISSN: 1471-8030
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 49
Serial Issue: 5
Title: Synthesis and optical properties of composites based on ternary Zn (sub 1-x) Cd (sub x) S nanoparticles enclosed in a layered octosilicate
Affiliation: Nanchang University, College of Chemistry, Nanchang, China
Pages: 703-716
Published: 201412
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 58
Accession Number: 2015-034319
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201516
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