Jump to main content
Jump to site search


A portable multi-channel sensing device using Au nano-urchins as probes for melamine detection in milk

Author affiliations

Abstract

Facile detection of melamine in milk was realized through a portable multi-channel sensing device using Au nanoparticles with urchin-like structures as sensing probes. The detection mechanism was based on the aggregation of Au nano-urchins, induced by the formation of Au–N bonding with melamine. The Au nano-urchins were synthesized by a seed-mediated growth method in the presence of hydroquinone, which has the localized surface plasmon absorption at about 680 nm. The results showed that the melamine detection was environment pH dependent. The optimal melamine detection condition occurred when the pH of the BR buffer was 5.72. A better selectivity to melamine was fulfilled when compared with its structurally similar compounds: cytosine, uracil, and thymine. The multi-channel sensing device has a detection limit of 18 nM for melamine in milk, which could meet the requirement for monitoring the melamine amount in milk.

Graphical abstract: A portable multi-channel sensing device using Au nano-urchins as probes for melamine detection in milk

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 Apr 2017, accepted on 30 Jun 2017 and first published on 03 Jul 2017


Article type: Paper
DOI: 10.1039/C7TC01384A
Citation: J. Mater. Chem. C, 2017, Advance Article
  •   Request permissions

    A portable multi-channel sensing device using Au nano-urchins as probes for melamine detection in milk

    L. Chen, Y. Huang, T. T. Xing, L. Ge, T. Yang, B. Chen and C. Z. Huang, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC01384A

Search articles by author

Spotlight

Advertisements