Highly Sensitive Ratiometric Fluorescent Probe for the Detection of Mercury Ions

  • Yanfei Yue
  • Zhao Gao
  • Lian Chen
  • Rongxin Su
  • Wei Qi
  • Zhimin He

Abstract

An effective dual-emission fluorescent probe combining gold nanoclusters (AuNCs) and carbon dots (CDs) was fabricated for the detection of mercury ions (Hg2+). CDs doped into silica nanoparticles exhibited a reference fluorescence signal, while the outer AuNCs layer stabilized by bovine serum albumin (BSA) was extremely sensitive to Hg2+. This probe selectively detected Hg2+ in a good linear range from 0.43 to 39 μM and a detection limit (signal-to-noise ratio is 3) of 81 nM. The increase in the Hg2+ concentration was accompanied by the colour change from reddish violet to blue. This method exhibited several advantages of facile preparation and operation and high selectivity and sensitivity. This dual-emission fluorescent probe has significant potential for the ‘‘naked eye’’ detection of Hg2+.
Published
2017-09-01
How to Cite
Yue Y., Gao Z., Chen L., Su R., Qi W., He Z., 2017, Highly Sensitive Ratiometric Fluorescent Probe for the Detection of Mercury Ions , Chemical Engineering Transactions, 61, 1531-1536.