Fabrication of Electrochemical Sensor Using SnO2-Modified-TiO2 Nanocomposite for Detection of Hydrazine

被引:11
|
作者
Mohammad, Akbar [1 ]
Khan, Mohammad Ehtisham [2 ]
AlHazmi, Waleed [3 ]
Yoon, Taeho [1 ]
机构
[1] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, Gyeongbuk, South Korea
[2] Jazan Univ, Dept Chem Engn Technol, Coll Appl Ind Technol CAIT, Jazan 45971, Saudi Arabia
[3] Jazan Univ, Dept Mech Engn, Fac Engn, Jazan 45142, Saudi Arabia
基金
新加坡国家研究基金会;
关键词
Sensors; Nanoscale materials; Electroanalytical Electrochemistry; Electrochemical Engineering; GLASSY-CARBON ELECTRODE; SNO2; NANOPARTICLES; ELECTROCATALYTIC OXIDATION; FACILE SYNTHESIS; CONTROLLABLE SYNTHESIS; HYDROGEN-PEROXIDE; CHEMICAL SENSOR; GRAPHENE OXIDE; ELECTROOXIDATION; NANOCATALYST;
D O I
10.1149/1945-7111/ac099b
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
In this paper, we report the preparation of an SnO2/TiO2 nanocomposite (SnO2/TiO2 NC) for modifying a glassy carbon electrode (GCE) via a self-assembly approach; the SnO2/TiO2/GCE thus prepared was employed as a working electrode for the electrochemical detection of hydrazine (Hz) at room temperature. The detection of Hz as a model analyte was efficiently monitored by the dual approaches of linear sweep voltammetry and cyclic voltammetry under different optimization conditions. The SnO2/TiO2/GCE sensor showed a low limit of detection (LoD), and high sensitivity and selectivity with good linearity. The sensitivity and LoD of the proposed sensor were obtained using CV as 23.14 mu A mu M-1 cm(-2) and 0.160 mu M, respectively. A linear calibration plot was obtained (R-2 = 0.974) for varying concentrations of Hz (5 to 45 mu M). However, the sensitivity and LoD using LSV were obtained as 32.92 mu A mu M-1 cm(-2) and 0.143 mu M, respectively with linear range of 1 to 40 mu M (R-2 = 0.984). The present work provides a method of fabrication of an SnO2/TiO2 NC-based electrochemical sensor that is effective in the detection of hazardous chemicals.
引用
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页数:9
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