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  • Core/shell CdS/ZnS nanoparticles were modelled in the Material Studio environment and synthesized by one-pot procedure. The core CdS radius size and thickness of the ZnS shell composed of 1–3 ZnS monolayers were predicted from the molecular models. From UV–vis absorption spectra of the CdS/ZnS colloid dispersions transition energies of CdS and ZnS nanostructures were calculated. They indicated penetration of electrons and holes from the CdS core into the ZnS shell and relaxation strain in the ZnS shell structure. The transitions energies were used for calculation of the CdS core radius by the Schrödingerequation. Both the relaxation strain in ZnS shells and the size of the CdS core radius were predicted bythe molecular modelling.The ZnS shell thickness and a degree of the CdS core coverage were characterized by the photocatalytic decomposition of Methylene Blue (MB) using CdS/ZnS nanoparticles as photocatalysts. The observedkinetic constants of the MB photodecomposition (kobs) were evaluated and a relationship between kobsand the ZnS shell thickness was derived. Regression results revealed that 86% of the CdS core surface was covered with ZnS and the average thickness of ZnS shell was about 12% higher than that predicted by molecular modelling. The ZnS shell thickness and a degree of the CdS core coverage were characterized by the photocatalytic decomposition of Methylene Blue (MB) using CdS/ZnS nanoparticles as photocatalysts. The observed kinetic constants of the MB photodecomposition (kob) were evaluated and a relationship between kob and the ZnS shell thickness was derived. Regression results revealed that 86% of the CdS core surface was covered with ZnS and the average thickness of ZnS shell was about 12% higher than that predicted by molecular modelling.
  • Core/shell CdS/ZnS nanoparticles were modelled in the Material Studio environment and synthesized by one-pot procedure. The core CdS radius size and thickness of the ZnS shell composed of 1–3 ZnS monolayers were predicted from the molecular models. From UV–vis absorption spectra of the CdS/ZnS colloid dispersions transition energies of CdS and ZnS nanostructures were calculated. They indicated penetration of electrons and holes from the CdS core into the ZnS shell and relaxation strain in the ZnS shell structure. The transitions energies were used for calculation of the CdS core radius by the Schrödingerequation. Both the relaxation strain in ZnS shells and the size of the CdS core radius were predicted bythe molecular modelling.The ZnS shell thickness and a degree of the CdS core coverage were characterized by the photocatalytic decomposition of Methylene Blue (MB) using CdS/ZnS nanoparticles as photocatalysts. The observedkinetic constants of the MB photodecomposition (kobs) were evaluated and a relationship between kobsand the ZnS shell thickness was derived. Regression results revealed that 86% of the CdS core surface was covered with ZnS and the average thickness of ZnS shell was about 12% higher than that predicted by molecular modelling. The ZnS shell thickness and a degree of the CdS core coverage were characterized by the photocatalytic decomposition of Methylene Blue (MB) using CdS/ZnS nanoparticles as photocatalysts. The observed kinetic constants of the MB photodecomposition (kob) were evaluated and a relationship between kob and the ZnS shell thickness was derived. Regression results revealed that 86% of the CdS core surface was covered with ZnS and the average thickness of ZnS shell was about 12% higher than that predicted by molecular modelling. (en)
Title
  • Core/shell CdS/ZnS nanoparticles: Molecular modelling and characterization by photocatalytic decomposition of Methylene Blue
  • Core/shell CdS/ZnS nanoparticles: Molecular modelling and characterization by photocatalytic decomposition of Methylene Blue (en)
skos:prefLabel
  • Core/shell CdS/ZnS nanoparticles: Molecular modelling and characterization by photocatalytic decomposition of Methylene Blue
  • Core/shell CdS/ZnS nanoparticles: Molecular modelling and characterization by photocatalytic decomposition of Methylene Blue (en)
skos:notation
  • RIV/61989100:27710/14:86091975!RIV15-MSM-27710___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(ED0040/01/01), P(GAP107/11/1918)
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  • Neuveden
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  • 8958
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27710/14:86091975
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  • Core/shell nanoparticles, CdS/ZnS, Molecular modelling, Electron tunelling, Photocatalysis (en)
http://linked.open.../riv/klicoveSlovo
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  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [364A364C8E3E]
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  • Applied Surface Science
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  • 292
http://linked.open...iv/tvurceVysledku
  • Praus, Petr
  • Svoboda, Ladislav
  • Hospodková, Alice
  • Tokarský, Jonáš
  • Klemm, Volker
http://linked.open...ain/vavai/riv/wos
  • 000330208500113
issn
  • 0169-4332
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.apsusc.2013.12.055
http://localhost/t...ganizacniJednotka
  • 27710
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