Enhanced humidity sensing of functionalized reduced graphene oxide with 4-chloro-3-sulfophenylazo groups

被引：19

作者：

Bai, Yuan ^{[1
,2
]}

Zhang, Chao-Zhi ^{[1
,3
]}

Chen, Bin ^{[3
]}

Sun, Hongqi ^{[4
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China

[2] GuoDian Sci & Technol Res Inst, State Key Lab Clean & Efficient Coal Fired Power, Nanjing 210023, Jiangsu, Peoples R China

[3] Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China

[4] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Joondalup, WA 6027, Australia

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 287卷

基金：

中国国家自然科学基金;

关键词：

Sulfonation; Reduced graphene oxide; Humidity sensing; Functionalization; Modified diazonium salt method; THIN-FILMS; GEL; WATER; PERFORMANCE; NANOTUBES; IONS; ACID;

D O I：

10.1016/j.snb.2019.02.056

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Humidity sensing material plays an important role in developing efficient humidity sensors. In this paper, reduced graphene oxide grafted by 4-chloro-3-sulfophenylazo groups (rGO-SC) was synthesized. Microstructure of rGO-SC was similar to that of rGO. Humidity sensors fabricated by rGO-SC exhibited three orders of magnitude change of its impedance, a high sensing response value (S=2961.39), short response/recovery time (1.3 s / 23.5 s), and a small hysteresis (4.56%). A synergistic effect arising between sulfonic acid and Cl groups on rGO-SC surfaces improved the humidity sensing properties of the material. Experimental results showed that the humidity sensing of the rGO-SC was attributed to electronic or ionic conductivities at varying relative humidity, respectively.

引用

页码：258 / 266

页数：9

共 41 条

[1] ELECTRICAL CONDUCTIVITY OF SILICA GEL IN PRESENCE OF ADSORBED WATER [J].

ANDERSON, JH ;

PARKS, GA .

JOURNAL OF PHYSICAL CHEMISTRY, 1968, 72 (10) :3662-&

[2] Ultrahigh humidity sensitivity of graphene oxide [J].

Bi, Hengchang ;

Yin, Kuibo ;

Xie, Xiao ;

Ji, Jing ;

Wan, Shu ;

Sun, Litao ;

Terrones, Mauricio ;

Dresselhaus, Mildred S. .

SCIENTIFIC REPORTS, 2013, 3

[3] THIN-FILMS OF POLY-VANADIUM-MOLYBDENUM ACID AS STARTING MATERIALS FOR HUMIDITY SENSORS [J].

BONDARENKA, V ;

GREBINSKIJ, S ;

MICKEVICIUS, S ;

VOLKOV, V ;

ZACHAROVA, G .

SENSORS AND ACTUATORS B-CHEMICAL, 1995, 28 (03) :227-231

[4] Investigations on the ion transport mechanism in conducting polymer films [J].

Casalbore-Miceli, G ;

Yang, MJ ;

Camaioni, N ;

Mari, CM ;

Li, Y ;

Sun, H ;

Ling, M .

SOLID STATE IONICS, 2000, 131 (3-4) :311-321

[5] A novel polyvinyltetrazole-grafted resin with high capacity for adsorption of Pb(II), Cu(II) and Cr(III) ions from aqueous solutions [J].

Chen, Youning ;

He, Maofang ;

Wang, Chaozhan ;

Wei, Yinmao .

JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (27) :10444-10453

[6] A QCM humidity sensor based on fullerene/graphene oxide nanocomposites with high quality factor [J].

Ding, Xing ;

Chen, Xiangdong ;

Chen, Xinpeng ;

Zhao, Xuan ;

Li, Ning .

SENSORS AND ACTUATORS B-CHEMICAL, 2018, 266 :534-542

[7] Humidity sensors based on Li-loaded nanoporous polymers [J].

Fei, Teng ;

Jiang, Kai ;

Liu, Sen ;

Zhang, Tong .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 190 :523-528

[8] Humidity sensing properties of nafion and sol-gel derived SiO2/Nafion composite thin films [J].

Feng, CD ;

Sun, SL ;

Wang, H ;

Segre, CU ;

Stetter, JR .

SENSORS AND ACTUATORS B-CHEMICAL, 1997, 40 (2-3) :217-222

[9] Effect of polymerization time on the humidity sensing properties of polypyrrole [J].

Geng, Wangchang ;

Li, Nan ;

Li, Xiaotian ;

Wang, Rui ;

Tu, Jinchun ;

Zhang, Tong .

SENSORS AND ACTUATORS B-CHEMICAL, 2007, 125 (01) :114-119

[10] Simultaneous sulfonation and reduction of graphene oxide as highly efficient supports for metal nanocatalysts [J].

He, Daping ;

Kou, Zongkui ;

Xiong, Yuli ;

Cheng, Kun ;

Chen, Xu ;

Pan, Mu ;

Mu, Shichun .

CARBON, 2014, 66 :312-319

← 1 2 3 4 5 →