Evolution of ZnS Nanoparticles via Facile CTAB Aqueous Micellar Solution Route: A Study on Controlling Parameters

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• 作者：S. K. Mehta (1)
  Sanjay Kumar (1)
  Savita Chaudhary (1)
  K. K. Bhasin (1)
  Michael Gradzielski (2)
  
• 关键词：ZnS nanoparticles ; Optical absorption ; XRD ; SAXS ; FTIR ; spectroscopy
• 刊名：Nanoscale Research Letters
• 出版年：2009
• 出版时间：January 2009
• 年：2009
• 卷：4
• 期：1
• 页码：17-28
• 全文大小：590KB
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• 作者单位：S. K. Mehta (1)
  Sanjay Kumar (1)
  Savita Chaudhary (1)
  K. K. Bhasin (1)
  Michael Gradzielski (2)
  
  1. Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
  2. Stranski-Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, TU Berlin, Sekr. TC 7, Strasse des 17. Juni 124, D-10623, Berlin, Germany
  
• ISSN：1556-276X

文摘

Synthesis of semiconductor nanoparticles with new photophysical properties is an area of special interest. Here, we report synthesis of ZnS nanoparticles in aqueous micellar solution of Cetyltrimethylammonium bromide (CTAB). The size of ZnS nanodispersions in aqueous micellar solution has been calculated using UV-vis spectroscopy, XRD, SAXS, and TEM measurements. The nanoparticles are found to be polydispersed in the size range 6-5?nm. Surface passivation by surfactant molecules has been studied using FTIR and fluorescence spectroscopy. The nanoparticles have been better stabilized using CTAB concentration above 1?mM. Furthermore, room temperature absorption and fluorescence emission of powdered ZnS nanoparticles after redispersion in water have also been investigated and compared with that in aqueous micellar solution. Time-dependent absorption behavior reveals that the formation of ZnS nanoparticles depends on CTAB concentration and was complete within 25?min.