Monolayer g-C3N4 Fluorescent Sensor for Sensitive and Selective Colorimetric Detection of Silver ion from Aqueous Samples

被引：68

作者：

Cao, Yujuan ^{[1
,2
]}

Wu, Wei ^{[1
]}

Wang, Song ^{[1
]}

Peng, Hong ^{[1
]}

Hu, Xiaogang ^{[1
,2
]}

Yu, Ying ^{[1
,2
]}

机构：

[1] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China

[2] S China Normal Univ, Guangzhou Key Lab Analyt Chem Biomed, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF FLUORESCENCE | 2016年 / 26卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Monolayer g-C3N4; Fluorescent sensor; Silver (I) ion; Aqueous samples; GRAPHITIC CARBON(IV) NITRIDE; METAL-IONS; NANOPARTICLES; PRECONCENTRATION; COMPOSITE; GRAPHENE; GOLD;

D O I：

10.1007/s10895-016-1764-9

中图分类号：

Q5 [生物化学];

学科分类号：

070307 [化学生物学];

摘要：

Rapid and sensitive detection of heavy-metal ions in natural water environments worldwide is urgently needed because of their severe threats to human health. In the present work, monolayer graphite-like flake C3N4 (g-C3N4) materials were applied as a new fluorescent sensor for the detection of trace silver ion in aqueous solution. The thickness of synthesized g-C3N4 was 0.45 nm and obtained by exfoliating twice with ultrasonic. With the presence of ethylene diamine tetraacetic acid as a screening agent, the highly sensitive sensor reached a low detection limit of 52.3 nmol/L for silver (I) ion and there was no disturbance when silver (I) ion coexisted with other metal ions in water samples. Under the optimal conditions, the monolayer g-C3N4 was successfully used to detect trace silver (I) ion in different environmental water and drinking water samples.

引用

页码：739 / 744

页数：6

共 22 条

[1]

New nano-composite potentiometric sensor composed of graphene nanosheets/thionine/molecular wire for nanomolar detection of silver ion in various real samples [J].