Facile synthesis of gold nanoparticles by amino acid asparagine: Selective sensing of arsenic

Gajanan Ghodake, Vassilios S. Vassiliadis, Jeong Hak Choi, Jiseon Jang, Dae Sung Lee

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The amino acid asparagine (ASP) was used as a benign reducing and stabilizing agent for the production of monodisperse gold nanoparticles (AuNPs) using green chemistry principles. With an increasing concentration of ASP (0.5 to 10 mM), the absorbance intensity at 525 nm increased; however, no effects on the color, size, or shape of the AuNPs were observed. Transmission electron microscope (TEM) images showed that the AuNPs were either hexagonal or spherical in shape and had an average size of approximately 10 ± 5 nm. Facile colorimetric assays of the AuNPs ere applied to detect a variety of heavy metal ion species in water.

Original languageEnglish
Pages (from-to)7235-7239
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume15
Issue number9
DOIs
StatePublished - 1 Sep 2015

Keywords

  • Arsenic
  • Asparagine
  • Gold nanoparticles
  • Sensing.
  • Toxicity

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