A new and clean method on synthesis of gold nanoparticles from bulk gold substrates

Chung Chin Yu, Yu-Chuan Liu, Kuang Hsuan Yang, Chia Ching Li, Cheng Cai Wang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this work, we report a new pathway to prepare clean gold nanoparticles in neutral solutions with aid of natural chitosan. First, an Au substrate was cycled in a deoxygenated aqueous solution containing 0.1N NaCl and 1 g L -1 chitosan from -0.28 to +1.22 V vs. Ag/AgCl at 500 mV s -1 for 200 scans. The durations at the cathodic and anodic vertices are 10 and 5 s, respectively. After this process, positively charged Au- and chitosan-containing complexes were produced in the solution. Then the solution was heated from room temperature to boiling at a heating rate of 6 °C min-1 to prepare Au nanoparticles. The particle sizes of prepared Au (1 1 1) nanoparticles are ca. 10 nm. Moreover, the prepared Au nanoparticles in solutions are capable for anti-oxidation and stable in an ambient atmosphere for at least three months.

Original languageEnglish
Pages (from-to)109-112
Number of pages4
JournalMaterials Chemistry and Physics
Volume125
Issue number1-2
DOIs
Publication statusPublished - Jan 1 2011

Fingerprint

Gold
gold
Nanoparticles
Chitosan
nanoparticles
Substrates
synthesis
boiling
apexes
Heating rate
Boiling liquids
aqueous solutions
atmospheres
oxidation
heating
Particle size
room temperature
Oxidation
Temperature

Keywords

  • Chitosan
  • Electrochemical methods
  • Gold nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

A new and clean method on synthesis of gold nanoparticles from bulk gold substrates. / Yu, Chung Chin; Liu, Yu-Chuan; Yang, Kuang Hsuan; Li, Chia Ching; Wang, Cheng Cai.

In: Materials Chemistry and Physics, Vol. 125, No. 1-2, 01.01.2011, p. 109-112.

Research output: Contribution to journalArticle

Yu, Chung Chin ; Liu, Yu-Chuan ; Yang, Kuang Hsuan ; Li, Chia Ching ; Wang, Cheng Cai. / A new and clean method on synthesis of gold nanoparticles from bulk gold substrates. In: Materials Chemistry and Physics. 2011 ; Vol. 125, No. 1-2. pp. 109-112.
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