A novel photoelectrochemical sensor based on graphitic carbon nitride for glyphosate detection

Chen Sihong; Zhang Shupei; LI Yilin; Gong Lingshan; Yan Huixiang; Zhang Qingrong; Xu Guifang; Dai Hong

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A novel photoelectrochemical sensor based on graphitic carbon nitride for glyphosate detection

Chen Sihong #,Zhang Shupei,LI Yilin,Gong Lingshan,Yan Huixiang,Zhang Qingrong,Xu Guifang,Dai Hong *

College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007

*Correspondence author

#Submitted by

Subject:

Funding: National Science Foundation of Fujian Province（No.2011J05020）, NSFC （No.21205016）, Education Department of Fujian Province（No.JA14071, JB14036, JA13068）, Foundation of Fuzhou Science and Technology Bureau（No.2013-S-113）, Fujian Normal University outstanding young teacher research fund projects（No.fjsdjk2012068）

Opened online:10 November 2015

Accepted by: none

Citation: Chen Sihong,Zhang Shupei,LI Yilin.A novel photoelectrochemical sensor based on graphitic carbon nitride for glyphosate detection[OL]. [10 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4659858

A signal-on photoelectrochemical strategy with graphitic carbon nitride decorated Ag+ based on the binding-induced internal-displacement for glyphosate monitoring was established. graphite-like carbon nitride as visible light-active material possesses fine photocatalytic activity, the pyridine nitrogen units on g-C3N4 backbone could absorb Ag+ through chemical absorption and then photo-generated electrons would be reacted by Ag+, leading to the inhibition of electrons transfer and decrement of photocurrent. However, the chelate effect between Ag+ and glyphosate can promoted the constitution of current circuit and signal improvement. This economical and sensitive sensor system could be broadly applied for substance detection.

Keywords:photoelectrochemical sensor; graphitic carbon nitride; Ag+; glyphosate; chelation

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