Fabrication of platinum nanoparticles in aqueous solution and solid phase using amphiphilic PB-b-PEO copolymer nanoreactors

HODA N., Budama L., Cakir B. A., Topel Ö., Ozisik R.

MATERIALS RESEARCH BULLETIN, cilt.48, sa.9, ss.3183-3188, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 9
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.materresbull.2013.04.091
  • Dergi Adı: MATERIALS RESEARCH BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3183-3188
  • Anahtar Kelimeler: Composites, Nanostructures, Polymer, Chemical synthesis, Electron microscopy, GOLD NANOPARTICLES, DIBLOCK COPOLYMER, SIZE, STABILITY, CATALYSTS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Fabrication of Pt nanoparticles using an amphiphilic copolymer template in aqueous solution was achieved via polybutadiene-block-polyethyleneoxide copolymer micelles, which acted as nanoreactors. In addition, Pt nanoparticles were synthesized using hydrogen gas as the reducing agent in solid state for the first time to compare against solution synthesis. The influences of loaded precursor salt amount to micelles and the type of reducing agent on the size of nanoparticles were investigated through transmission electron microscopy. It was found that increasing the ratio of precursor salt to copolymer and using different type of reducing agent, even in solid phase reduction, did not affect the nanoparticle size. The average size of Pt nanoparticles was estimated to be 1.4 +/- 0.1 nm. The reason for getting same sized nanoparticles was discussed in the light of nucleation, growth process, stabilization and diffusion of nanoparticles within micelles. (C) 2013 Elsevier Ltd. All rights reserved.