Jump to main content
Jump to site search

Issue 36, 2017
Previous Article Next Article

Aqueous synthesis of CdTe quantum dots by hydride generation for visual detection of silver on quantum dot immobilized paper

Author affiliations

Abstract

A novel visual detection method was developed for silver using CdTe quantum dot (QD) immobilized paper. CdTe QDs were synthesized in aqueous solution by hydride generation (HG) for the first time, with H2Te gas being introduced into the aqueous medium containing Cd2+ ions. The gaseous precursor, H2Te, is generated on-line by reducing TeO32− with KBH4. The visible fluorescence from the CdTe QDs immobilized on paper was quenched by Ag+. A limit of detection (LOD) of 0.01 μg mL−1 and a relative standard deviation (RSD, n = 7) of 2.1% at a concentration of 1 μg mL−1 of Ag+ were obtained when using a commercial fluorescence spectrophotometer as the detector. In visual detection, as low as 1 μg mL−1 of Ag+ in antibacterial textiles and drugs can be easily discriminated from the blank with the naked eye. The proposed method has several unique advantages, including straightforwardness, rapidness, affordability and requirement of no equipment for visual detection.

Graphical abstract: Aqueous synthesis of CdTe quantum dots by hydride generation for visual detection of silver on quantum dot immobilized paper

Back to tab navigation

Publication details

The article was received on 12 Jul 2017, accepted on 08 Aug 2017 and first published on 09 Aug 2017


Article type: Paper
DOI: 10.1039/C7AY01705G
Citation: Anal. Methods, 2017,9, 5339-5347
  •   Request permissions

    Aqueous synthesis of CdTe quantum dots by hydride generation for visual detection of silver on quantum dot immobilized paper

    K. Huang, R. Dai, W. Deng, L. Lin, A. Zhang and X. Yuan, Anal. Methods, 2017, 9, 5339
    DOI: 10.1039/C7AY01705G

Search articles by author

Spotlight

Advertisements