Triazole-acetate functionalized gold nanoparticles for colorimetric Pb(ii) sensing

I. Lin Lee, Yi Ming Sung, Shu-Pao Wu*

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

New triazole-acetate functionalized gold nanoparticles (TTA-AuNPs) for sensitive and selective colorimetric detection of Pb2+ were developed. Aggregation of TTA-AuNPs was induced immediately in the presence of Pb2+, yielding a color change from wine-red to purple. This Pb 2+-induced aggregation of TTA-AuNPs was monitored by the bare eye and UV-vis spectroscopy with a detection limit of 16.7 nM. TTA-AuNPs showed excellent selectivity toward Pb2+compared to other metal ions through the interaction between the carboxyl group and triazole structure of TTA and Pb2+. The best detection of Pb2+ was achieved in a pH range from 5 to 10. Furthermore, TTA-AuNPs were applied to detect Pb 2+ in lake water with low interference.

Original languageEnglish
Pages (from-to)25251-25256
Number of pages6
JournalRSC Advances
Volume4
Issue number48
DOIs
StatePublished - 1 Jan 2014

Fingerprint Dive into the research topics of 'Triazole-acetate functionalized gold nanoparticles for colorimetric Pb(ii) sensing'. Together they form a unique fingerprint.

  • Cite this