Extractant assisted synthesis of polymer stabilized platinum and palladium metal nanoparticles for sensor applications

Dmitri Muraviev, Maria Pividory, José Soto, Salvador Alegret

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Abstract

Extractant-assisted synthesis of platinum and palladium polymer-stabilized metal nanoparticles (PSMNP) was carried out for the first time. The synthesis included the following sequential steps: a) loading of extractant (tributyl-phosphine oxide, TBPO) with the desired metal ion; b) preparation of a membrane "cocktail" by mixing a metal-containing extractant, solution of the polymer (PVC or polysulfone) and plastisizer; c) membrane deposition and metal reduction inside the membrane (intermatrix synthesis of PSMNP) by using either a chemical or an electrochemical reduction technique. The electro conductivity of the resulting polymer-metal nanocomposite membrane appeared by several orders of magnitude higher than that of the metal-free polymer. The mass-exchange properties of PSMNP-containing membranes were shown to depend on both the type of the polymer and the membrane deposition technique.
Original languageEnglish
Pages (from-to)731-745
JournalSolvent Extraction and Ion Exchange
Volume24
Issue number5
DOIs
Publication statusPublished - 18 Aug 2006

Keywords

  • Extractant
  • Metal nanoparticles
  • Polymeric membrane
  • Sensors

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