Cargando…

Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge

Highly dispersed colloidal gold (Au) nanoparticles were synthesized at room temperature using glow discharge plasma within only 5 min. The prepared Au colloids were characterized with UV–visible absorption spectra (UV–vis), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy...

Descripción completa

Detalles Bibliográficos
Autor principal: Liu, Chang-jun
Formato: Texto
Lenguaje:English
Publicado: Springer 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894217/
https://www.ncbi.nlm.nih.gov/pubmed/20652098
http://dx.doi.org/10.1007/s11671-009-9453-0
_version_ 1782183161018449920
author Liu, Chang-jun
author_facet Liu, Chang-jun
author_sort Liu, Chang-jun
collection PubMed
description Highly dispersed colloidal gold (Au) nanoparticles were synthesized at room temperature using glow discharge plasma within only 5 min. The prepared Au colloids were characterized with UV–visible absorption spectra (UV–vis), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) equipped with an energy dispersion X-ray spectrometer (EDX). UV–vis, XPS and EDX results confirmed that Au(3+) ions in HAuCl(4) solution could be effectively reduced into the metallic state at room temperature with the glow discharge plasma. TEM images showed that Au nanoparticles were highly dispersed. The size of colloidal Au nanoparticles could be easily tuned in the nanometer range by adjusting the initial concentration of HAuCl(4) solution. Moreover, the as-synthesized Au colloids (d(av) = 3.64 nm) exhibited good catalytic activity for glucose oxidation. The nucleation and growth of colloidal Au particles under the influence of the plasma was closely related with the high-energy electrons generated by glow discharge plasma.
format Text
id pubmed-2894217
institution National Center for Biotechnology Information
language English
publishDate 2009
publisher Springer
record_format MEDLINE/PubMed
spelling pubmed-28942172010-07-21 Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge Liu, Chang-jun Nanoscale Res Lett Nano Express Highly dispersed colloidal gold (Au) nanoparticles were synthesized at room temperature using glow discharge plasma within only 5 min. The prepared Au colloids were characterized with UV–visible absorption spectra (UV–vis), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) equipped with an energy dispersion X-ray spectrometer (EDX). UV–vis, XPS and EDX results confirmed that Au(3+) ions in HAuCl(4) solution could be effectively reduced into the metallic state at room temperature with the glow discharge plasma. TEM images showed that Au nanoparticles were highly dispersed. The size of colloidal Au nanoparticles could be easily tuned in the nanometer range by adjusting the initial concentration of HAuCl(4) solution. Moreover, the as-synthesized Au colloids (d(av) = 3.64 nm) exhibited good catalytic activity for glucose oxidation. The nucleation and growth of colloidal Au particles under the influence of the plasma was closely related with the high-energy electrons generated by glow discharge plasma. Springer 2009-10-10 /pmc/articles/PMC2894217/ /pubmed/20652098 http://dx.doi.org/10.1007/s11671-009-9453-0 Text en Copyright ©2009 to the authors
spellingShingle Nano Express
Liu, Chang-jun
Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge
title Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge
title_full Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge
title_fullStr Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge
title_full_unstemmed Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge
title_short Size-Controlled Synthesis of Colloidal Gold Nanoparticles at Room Temperature Under the Influence of Glow Discharge
title_sort size-controlled synthesis of colloidal gold nanoparticles at room temperature under the influence of glow discharge
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894217/
https://www.ncbi.nlm.nih.gov/pubmed/20652098
http://dx.doi.org/10.1007/s11671-009-9453-0
work_keys_str_mv AT liuchangjun sizecontrolledsynthesisofcolloidalgoldnanoparticlesatroomtemperatureundertheinfluenceofglowdischarge