Electrogenerated chemiluminescence behavior of graphite-like carbon nitride and its application in selective sensing Cu 2+

Changming Cheng, Ying Huang, Xianqing Tian, Baozhan Zheng, Yi Li, Hongyan Yuan, Dan Xiao*, Shunping Xie, Martin M F CHOI

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

256 Citations (Scopus)

Abstract

This paper reports for the first time the electrogenerated chemiluminescence (ECL) behavior of graphite-like carbon nitride (g-C 3N 4) with K 2S 2O 8 as the coreactant. The possible ECL reaction mechanisms are proposed. The spectral features of the ECL emission and photoluminescence (PL) of g-C 3N 4 are compared, and their resemblance demonstrates that the excited states of g-C 3N 4 from both ECL and photoexcitation are the same. The effects of K 2S 2O 8 concentration, pH, g-C 3N 4/carbon powder ratio, and scan rate on the ECL intensity have been studied in detail. Furthermore, it is observed that the ECL intensity is efficiently quenched by trace amounts of Cu 2+. g-C 3N 4 is thus employed to fabricate an ECL sensor which shows high selectivity to Cu 2+ determination. The limit of detection is determined as 0.9 nM. It is anticipated that g-C 3N 4 could be a new class of promising material for fabricating ECL sensors.

Original languageEnglish
Pages (from-to)4754-4759
Number of pages6
JournalAnalytical Chemistry
Volume84
Issue number11
DOIs
Publication statusPublished - 5 Jun 2012

Scopus Subject Areas

  • Analytical Chemistry

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