Enhanced growth of tellurium nanowires under conditions of macromolecular crowding

M. Hunyadi, Zoltán Gácsi, István Csarnovics, Lóránt Csige, A. Csík, L. Daróczi, R. Huszánk, Zoltán Szcs

Research output: Contribution to journalArticle

2 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 - Jan 1 2017

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Tellurium
crowding
tellurium
Nanowires
Povidone
nanowires
hydrazine
Excipients
Reducing Agents
hydrazines
synthesis
Macromolecules
macromolecules
Optical properties
sodium
Nanoparticles
optical properties
nanoparticles
augmentation

ASJC Scopus subject areas

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

Cite this

Enhanced growth of tellurium nanowires under conditions of macromolecular crowding. / Hunyadi, M.; Gácsi, Zoltán; Csarnovics, István; Csige, Lóránt; Csík, A.; Daróczi, L.; Huszánk, R.; Szcs, Zoltán.

In: Physical Chemistry Chemical Physics, Vol. 19, No. 25, 01.01.2017, p. 16477-16484.

Research output: Contribution to journalArticle

Hunyadi, M. ; Gácsi, Zoltán ; Csarnovics, István ; Csige, Lóránt ; Csík, A. ; Daróczi, L. ; Huszánk, R. ; Szcs, Zoltán. / Enhanced growth of tellurium nanowires under conditions of macromolecular crowding. In: Physical Chemistry Chemical Physics. 2017 ; Vol. 19, No. 25. pp. 16477-16484.
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