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

[21] Fabrication of magnetically separable fluorescent terbium-based MOF nanospheres for highly selective trace-level detection of TNT [J].

Qian, Jing-Jing ;

Qiu, Ling-Guang ;

Wang, Yi-Min ;

Yuan, Yu-Peng ;

Xie, An-Jian ;

Shen, Yu-Hua .

DALTON TRANSACTIONS, 2014, 43 (10) :3978-3983

[22] Sensitivity gains in chemosensing by lasing action in organic polymers [J].

Rose, A ;

Zhu, ZG ;

Madigan, CF ;

Swager, TM ;

Bulovic, V .

NATURE, 2005, 434 (7035) :876-879

[23] Fluorescence and visual sensing of nitroaromatic explosives using electron rich discrete fluorophores [J].

Shanmugaraju, Sankarasekaran ;

Joshi, Sachin A. ;

Mukherjee, Partha Sarathi .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (25) :9130-9138

[24] Enhanced visible-light photocatalytic activity of g-C3N4-ZnWO4 by fabricating a heterojunction: investigation based on experimental and theoretical studies [J].

Sun, Liming ;

Zhao, Xian ;

Jia, Chun-Jiang ;

Zhou, Yixuan ;

Cheng, Xiufeng ;

Li, Pan ;

Liu, Li ;

Fan, Weiliu .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (44) :23428-23438

[25] Ultrathin Graphitic C3N4 Nanosheets/Graphene Composites: Efficient Organic Electrocatalyst for Oxygen Evolution Reaction [J].

Tian, Jingqi ;

Liu, Qian ;

Asiri, Abdullah M. ;

Alamry, Khalid A. ;

Sun, Xuping .

CHEMSUSCHEM, 2014, 7 (08) :2125-2130

[26] Three-Dimensional Porous Supramolecular Architecture from Ultrathin g-C3N4 Nanosheets and Reduced Graphene Oxide: Solution Self-Assembly Construction and Application as a Highly Efficient Metal-Free Electrocatalyst for Oxygen Reduction Reaction [J].

Tian, Jingqi ;

Ning, Rui ;

Liu, Qian ;

Asiri, Abdullah M. ;

Al-Youbi, Abdulrahman O. ;

Sun, Xuping .

ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (02) :1011-1017

[27] Ultrathin graphitic carbon nitride nanosheets: a novel peroxidase mimetic, Fe doping-mediated catalytic performance enhancement and application to rapid, highly sensitive optical detection of glucose [J].

Tian, Jingqi ;

Liu, Qian ;

Asiri, Abdullah M. ;

Qusti, Abdullah H. ;

Al-Youbi, Abdulrahman O. ;

Sun, Xuping .

NANOSCALE, 2013, 5 (23) :11604-11609

[28] Ultrathin graphitic carbon nitride nanosheets: a low-cost, green, and highly efficient electrocatalyst toward the reduction of hydrogen peroxide and its glucose biosensing application [J].

Tian, Jingqi ;

Liu, Qian ;

Ge, Chenjiao ;

Xing, Zhicai ;

Asiri, Abdullah M. ;

Al-Youbi, Abdulrahman O. ;

Sun, Xuping .

NANOSCALE, 2013, 5 (19) :8921-8924

[29] Ultrathin Graphitic Carbon Nitride Nanosheet: A Highly Efficient Fluorosensor for Rapid, Ultrasensitive Detection of Cu2+ [J].

Tian, Jingqi ;

Liu, Qian ;

Asiri, Abdullah M. ;

Al-Youbi, Abdulrahman O. ;

Sun, Xuping .

ANALYTICAL CHEMISTRY, 2013, 85 (11) :5595-5599

[30] Polymer sensors for nitroaromatic explosives detection [J].

Toal, Sarah J. ;

Trogler, William C. .

JOURNAL OF MATERIALS CHEMISTRY, 2006, 16 (28) :2871-2883

← 1 2 3 4 →