Effect of pH on the structural and optical properties of ZnS nanoparticles embedded in PVA matrix

Farjami Shayesteh S., Kolahi S., Azizian-Kalandarragh Y.

Indian Journal of Pure and Applied Physics, cilt.51, sa.11, ss.780-783, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 51 Sayı: 11
  • Basım Tarihi: 2013
  • Dergi Adı: Indian Journal of Pure and Applied Physics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.780-783
  • Gazi Üniversitesi Adresli: Hayır

Özet

ZnS nanoparticles embedded in polyvinyl alcohol (PVA) matrix have been synthesised with different pH by using wet chemical methods at room temperature. X-ray diffraction (XRD) pattern indicated that prepared nanoparticles with different pH show cubic phase. The average size variation of nanoparticles with pH estimated from the Debye-Scherrer equation and varying optical size by using absorption edge. Also, UV-Vis absorption results show a blue shift by variation of pH. The intensity of PL emission was found to be dependent on the pH of precursors and maximum of intensity related to pH=6. As a conclusion, pH plays vital role in improving PL intensity. It is also observed that particle size depends on the pH and a decrease in the size of particles is observed with the decrease of pH.