Biopolymer coated gold nanocrystals prepared using the green chemistry approach and their shape-dependent catalytic and surface-enhanced Raman scattering properties

Chih Wei Chou, Hui Hsuan Hsieh, You Cheng Hseu, Ko Shao Chen, Gou Jen Wang, Hsien Chang Chang, Yong Li Pan, Yi Syuan Wei, Ko Hsin Chang, Yeu Wei Harn

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

This study deals with the preparation of multi-shaped nanoscale gold crystals under synthetically simple, green, and efficient conditions using a seed-mediated growth approach in the presence of hyaluronic acid (HA). These highly biocompatible multi-shaped gold nanocrystals were examined to evaluate their catalytic and surface enhanced Raman scattering (SERS) properties. The results show that the size and shape of the nanocrystals are mainly correlated to the amount of seed, seed size, HA concentration, and reaction temperature. Gold seeds accelerate the reduction of the gold precursor to form gold nanocrystals using HA. The HA serves as a reducing agent and a growth template for the reduction of Au(iii) and nanocrystal stabilization. The multi-shaped gold nanocrystals showed superior catalytic properties and higher SERS performance. The simple, green approach efficiently controls the nanocrystals and creates many opportunities for future applications.

Original languageEnglish
Pages (from-to)11275-11286
Number of pages12
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number27
DOIs
Publication statusPublished - 2013 Jul 21

All Science Journal Classification (ASJC) codes

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

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