Jump to main content
Jump to site search

Issue 4, 2012
Previous Article Next Article

CdS nanotubes thin film for electrochemiluminescence analysis of phenolic compounds

Author affiliations

Abstract

A CdS nanotubes (NT) thin film has been fabricated to determine phenolic compounds based on the electrochemiluminescence (ECL) quenching of the CdS NT. The CdS NT thin film coated on an indium tin oxide substrate exhibits strong ECL emission with potassium persulfate (K2S2O8) as a coreactant. The effects of pH, electrolyte concentration and cyclic voltammetric scan rate on the ECL were studied. The quenching efficiency is governed by the position of the hydroxyl moiety in the parent benzene ring which follows the trend: resorcinol (1,3-benzenediol) > catechol (1,2-benzenediol) > hydroquinone (1,4-benzenediol) ≈ phenol. Under the optimal experimental conditions of 0.010 M K2S2O8, pH 11.60 and 0.10 V s−1, the quenching of ECL by catechol (2.0–10.0 μM), hydroquinone (40.0–140 μM), phenol (10–60 μM) and resorcinol (2.0–12.0 μM) follows Stern–Volmer behaviour. The limits of detection are calculated as 0.058, 0.64, 1.7, and 0.069 μM (S/N = 3) for catechol, hydroquinone, phenol, and resorcinol respectively. The fabrication of the CdS NT film is reproducible and its shelf-life is longer than three months. The CdS NT film has been successfully applied to determine the phenol contents in various environmental water samples with satisfactory results and good recoveries. Our proposed ECL CdS NT film provides a simple and convenient method for the detection of phenolic compounds and shows potential use in the pharmaceutical industry and environmental monitoring.

Graphical abstract: CdS nanotubes thin film for electrochemiluminescence analysis of phenolic compounds

Back to tab navigation

Publication details

The article was received on 07 Dec 2011, accepted on 04 Feb 2012 and first published on 08 Mar 2012


Article type: Paper
DOI: 10.1039/C2AY05869C
Anal. Methods, 2012,4, 1053-1059

  •   Request permissions

    CdS nanotubes thin film for electrochemiluminescence analysis of phenolic compounds

    Y. Wen, F. Luo, Y. Yang, L. Lin, J. Du, Y. Guo, D. Xiao and M. M. F. Choi, Anal. Methods, 2012, 4, 1053
    DOI: 10.1039/C2AY05869C

Search articles by author

Spotlight

Advertisements