Trace detection of nitro aromatic explosives by highly fluorescent g-C3N4 nanosheets

被引：45

作者：

Chen, Hai-Yu ^{[1
]}

Ruan, Lin-Wei ^{[1
]}

Jiang, Xia ^{[1
]}

Qiu, Ling-Guang ^{[1
]}

机构：

[1] Anhui Univ, Lab Adv Porous Mat, Sch Chem & Chem Engn, Hefei 230601, Peoples R China

来源：

ANALYST | 2015年 / 140卷 / 02期

基金：

中国国家自然科学基金;

关键词：

NITROAROMATIC EXPLOSIVES; ULTRASENSITIVE DETECTION; HYDROGEN EVOLUTION; ASSISTED SYNTHESIS; LEVEL DETECTION; QUANTUM DOTS; ELECTROCATALYST; NANOPARTICLES; PERFORMANCE; REDUCTION;

D O I：

10.1039/c4an01693a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Highly fluorescent g-C3N4 nanosheets were facilely fabricated by exfoliating bulk g-C3N4 under ultrasonic irradiation for 1 h. The atomic force microscopy (AFM) image shows that the resultant g-C3N4 nanosheets are similar to 6-14 nm thick, and the suspension is stable in air for several weeks. Remarkably, the obtained nanosheets exhibited strong fluorescence with an extremely high quantum yield (QY) up to 32%, and high sensitivity, selectivity, as well as a fast response to nitro aromatic explosives were observed. Typically, the quenching efficiency coefficient K-sv for PNP was 30 460 M-1, which proved that the resultant nanosheets possessed an extremely high sensitivity for nitro-phenol PNP detection.

引用

页码：637 / 643

页数：7

共 38 条

[1] High-speed fluorescence detection of explosives-like vapors [J].

Albert, KJ ;

Walt, DR .

ANALYTICAL CHEMISTRY, 2000, 72 (09) :1947-1955

[2] Inorganic-organic hybrid NiO-g-C3N4 photocatalyst for efficient methylene blue degradation using visible light [J].

Chen, Hai-Yu ;

Qiu, Ling-Guang ;

Xiao, Juan-Ding ;

Ye, Sheng ;

Jiang, Xia ;

Yuan, Yu-Peng .

RSC ADVANCES, 2014, 4 (43) :22491-22496

[3] Preparation of graphite-like carbon nitride nanoflake film with strong fluorescent and electrochemiluminescent activity [J].

Chen, Lichan ;

Huang, Danjun ;

Ren, Shuyan ;

Dong, Tongqing ;

Chi, Yuwu ;

Chen, Guonan .

NANOSCALE, 2013, 5 (01) :225-230

[4] Graphitic carbon nitride nanosheets: one-step, high-yield synthesis and application for Cu2+ detection [J].

Cheng, Ningyan ;

Jiang, Ping ;

Liu, Qian ;

Tian, Jingqi ;

Asiri, Abdullah M. ;

Sun, Xuping .

ANALYST, 2014, 139 (20) :5065-5068

[5] Selective and Efficient Detection of Nitro-Aromatic Explosives in Multiple Media including Water, Micelles, Organogel, and Solid Support [J].

Dey, Nilanjan ;

Samanta, Suman K. ;

Bhattacharya, Santanu .

ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (17) :8394-8400

[6] Fluorescence resonance energy transfer quenching at the surface of graphene quantum dots for ultrasensitive detection of TNT [J].

Fan, Lishuang ;

Hu, Yuwei ;

Wang, Xiao ;

Zhang, Linlin ;

Li, Fenghua ;

Han, Dongxue ;

Li, Zhenggang ;

Zhang, Qixian ;

Wang, Zhenxin ;

Niu, Li .

TALANTA, 2012, 101 :192-197

[7]

Fanny M R, 2004, J CHROMATOGR A, V1048, P213

[8] Optical explosives detection: from color changes to fluorescence turn-on [J].

Germain, Meaghan E. ;

Knapp, Michael J. .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (09) :2543-2555

[9] Computational screening of metal-organic frameworks for large-molecule chemical sensing [J].

Greathouse, Jeffery A. ;

Ockwig, Nathan W. ;

Criscenti, Louise J. ;

Guilinger, T. R. ;

Pohl, Phil ;

Allendorf, Mark D. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2010, 12 (39) :12621-12629

[10] Synthesis of g-C3N4 nanoparticles in mesoporous silica host matrices [J].

Groenewolt, M ;

Antonietti, M .

ADVANCED MATERIALS, 2005, 17 (14) :1789-+

← 1 2 3 4 →