Enhanced growth of tellurium nanowires under conditions of macromolecular crowding

Mátyás Hunyadi, Zoltán Gácsi, István Csarnovics, Lóránt Csige, Attila Csik, Lajos Daróczi, Róbert Huszánk, Zoltán Szcs

Research output: Article

5 Citations (Scopus)

Abstract

An unprecedented rate enhancement was observed in the wet-chemical synthesis of tellurium nanowires under crowded conditions of inert macromolecules. The synthesis was carried out at 105 °C using solutions of sodium tellurite (Na2TeO3) as a precursor, hydrazine (N2H4) as a reducing agent, and polyvinylpyrrolidone (PVP) as both a stabilizing and crowding agent. The PVP concentration was systematically varied between the dilute and crowding regimes up to 166 g l-1. The growth of the nanowires was monitored by measuring their size-dependent optical properties in the UV-Vis spectrum characterizing the size and morphology evolution of the nanowires and a coexisting phase of amorphous tellurium nanoparticles. The observed growth characteristics were interpreted in terms of non-specific structural organization of the crowded media due to the entropic-driven effects of space compartmentalization.

Original languageEnglish
Pages (from-to)16477-16484
Number of pages8
JournalPhysical Chemistry Chemical Physics
Volume19
Issue number25
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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