Sonochemical synthesis and loading of PbS nanoparticles into mesoporous silica

AKBAY E., Olmez T. G.

MATERIALS LETTERS, vol.215, pp.263-267, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 215
  • Publication Date: 2018
  • Doi Number: 10.1016/j.matlet.2017.12.117
  • Journal Name: MATERIALS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.263-267
  • Keywords: PbS, SBA-15, Sonochemical synthesis, Semiconductor, QUANTUM DOTS, NANOCOMPOSITE, NANOCRYSTALLITES, MORPHOLOGIES, REDUCTION, PROPERTY, NANORODS, ARRAYS
  • Anadolu University Affiliated: Yes

Abstract

A sonochemical method was used for simultaneous synthesis and loading of lead sulfide (PbS) nanoparticles into mesoporous SBA-15 (Santa Barbara Amorphous). In this study, the effect of different loading ratios (30, 45, 60, 75%) on morphology, crystalline structure and physicochemical characteristics of PbS-SBA-15_samples was investigated. TEM images showed that the PbS nanoparticles were highly dispersed inside the SBA-15 pores for all tested loadings, however especially 60 and 75%-PbS-SBA15_samples exhibited significant surface aggregation of PbS on SBA-15 surface. Also, PbS-SBA15_samples showed a strong UV light absorption at about 290-310 nm with increasing band gap energies, which is indicative of quantization effects. (C) 2017 Elsevier B.V. All rights reserved.