Design and fabrication of cost-effective and sensitive non-enzymatic hydrogen peroxide sensor using Co-doped δ-MnO2 flowers as electrode modifier

被引:23
作者
Ahmad, Khursheed [1 ]
Mobin, Shaikh M. [1 ,2 ,3 ]
机构
[1] Indian Inst Technol Indore, Discipline Chem, Khandwa Rd, Indore 453552, Madhya Pradesh, India
[2] Indian Inst Technol Indore, Discipline Biosci & Biomed Engn, Khandwa Rd, Indore 453552, Madhya Pradesh, India
[3] Indian Inst Technol Indore, Discipline Met Engn & Mat Sci, Khandwa Rd, Indore 453552, Madhya Pradesh, India
关键词
delta-MnO2; flowers; Co-doped delta-MnO2 flowers; Hydrogen peroxide sensor; Cyclic voltammetry; Linear sweep voltammetry; ELECTROCHEMICAL DETECTION; HYDROTHERMAL SYNTHESIS; OXIDE NANOCOMPOSITE; COUNTER-ELECTRODE; ENERGY-STORAGE; MNO2; PERFORMANCE; CATALYST; NANOMATERIALS; NANORODS;
D O I
10.1007/s00216-020-02861-9
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The development of a cost-effective and highly sensitive hydrogen peroxide sensor is of great importance. Electrochemical sensing is considered the most sensitive technique for hydrogen peroxide detection. Herein, we reported a cost-effective and highly sensitive hydrogen peroxide sensor using Co-doped delta-MnO2 (Co@delta-MnO2) flower-modified screen-printed carbon electrode. The delta-MnO2 and Co@delta-MnO2 flowers were synthesized by employing a hydrothermal approach. Advanced techniques such as PXRD, SEM, FTIR, Raman, UV, EDX, BET, and TEM were utilized to confirm the formation of delta-MnO2 and Co-doped delta-MnO2 flowers. The fabricated sensor exhibited an excellent detection limit (0.12 mu M) and sensitivity of 5.3 mu A mu M-1 cm(-2).
引用
收藏
页码:789 / 798
页数:10
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