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A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction

During the last few years, intensive research has been carried out on the synthesis of different hybrid nanostructures mostly using hydrothermal and solvothermal techniques. But the fabrication of the hybrid nanostructure through surface charge interaction of the individual components is comparative...

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Autores principales: Haldar, Dhrubaa, Bose, Saptasree, Ghosh, Arnab, Saha, Shyamal K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419516/
https://www.ncbi.nlm.nih.gov/pubmed/36134211
http://dx.doi.org/10.1039/c8na00388b
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author Haldar, Dhrubaa
Bose, Saptasree
Ghosh, Arnab
Saha, Shyamal K.
author_facet Haldar, Dhrubaa
Bose, Saptasree
Ghosh, Arnab
Saha, Shyamal K.
author_sort Haldar, Dhrubaa
collection PubMed
description During the last few years, intensive research has been carried out on the synthesis of different hybrid nanostructures mostly using hydrothermal and solvothermal techniques. But the fabrication of the hybrid nanostructure through surface charge interaction of the individual components is comparatively less explored. Here in this work, a hybrid nanostructure based on MoS(2) and CdTe quantum dots is synthesized through a simple surface charge interaction process using the negative surface charge of the excess sulfide ions (S(2−)) present at the edge of the MoS(2) QDs and positively charged CdTe QDs where the positive surface charge was induced in CdTe by using a cysteamine ligand in acidic medium. In the photoluminescence (PL) emission spectrum, a new peak is observed which is different from those of both of the individual components. Interestingly, with increasing the concentration of CdTe QDs during the preparation of the hybrid nano-structure, the peak of hybrid QDs is gradually blue shifted towards the emission of MoS(2) QDs. The maximum blue shift occurs up to 1 : 1 (v/v) ratio of MoS(2) : CdTe as in this concentration ratio all S(2−) ions are neutralized by –NH(3)(+). This new emission occurs from a newly generated hybrid energy level. The energy level positions of the two different QDs along with the hybrid ones are estimated via cyclic voltammetry and absorption experiments.
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spelling pubmed-94195162022-09-20 A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction Haldar, Dhrubaa Bose, Saptasree Ghosh, Arnab Saha, Shyamal K. Nanoscale Adv Chemistry During the last few years, intensive research has been carried out on the synthesis of different hybrid nanostructures mostly using hydrothermal and solvothermal techniques. But the fabrication of the hybrid nanostructure through surface charge interaction of the individual components is comparatively less explored. Here in this work, a hybrid nanostructure based on MoS(2) and CdTe quantum dots is synthesized through a simple surface charge interaction process using the negative surface charge of the excess sulfide ions (S(2−)) present at the edge of the MoS(2) QDs and positively charged CdTe QDs where the positive surface charge was induced in CdTe by using a cysteamine ligand in acidic medium. In the photoluminescence (PL) emission spectrum, a new peak is observed which is different from those of both of the individual components. Interestingly, with increasing the concentration of CdTe QDs during the preparation of the hybrid nano-structure, the peak of hybrid QDs is gradually blue shifted towards the emission of MoS(2) QDs. The maximum blue shift occurs up to 1 : 1 (v/v) ratio of MoS(2) : CdTe as in this concentration ratio all S(2−) ions are neutralized by –NH(3)(+). This new emission occurs from a newly generated hybrid energy level. The energy level positions of the two different QDs along with the hybrid ones are estimated via cyclic voltammetry and absorption experiments. RSC 2019-03-06 /pmc/articles/PMC9419516/ /pubmed/36134211 http://dx.doi.org/10.1039/c8na00388b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Haldar, Dhrubaa
Bose, Saptasree
Ghosh, Arnab
Saha, Shyamal K.
A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction
title A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction
title_full A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction
title_fullStr A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction
title_full_unstemmed A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction
title_short A green luminescent MoS(2)–CdTe hybrid nanostructure synthesized through surface charge interaction
title_sort green luminescent mos(2)–cdte hybrid nanostructure synthesized through surface charge interaction
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419516/
https://www.ncbi.nlm.nih.gov/pubmed/36134211
http://dx.doi.org/10.1039/c8na00388b
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