Preparation of Polybenzimidazole-Carboxylated Multiwalled Carbon Nanotube Composite for Intrinsic Sensing of Hydrogen Peroxide

被引：22

作者：

Hua, Mu-Yi ^{[1
,2
]}

Chen, Hsiao-Chien ^{[1
,2
]}

Tsai, Rung-Ywan ^{[3
]}

Tseng, Shen-Jui ^{[1
,2
]}

Hu, Sung-Cheng ^{[4
]}

Chiang, Cheng-Der ^{[4
]}

Chang, Pai-Jung ^{[4
]}

机构：

[1] Chang Gung Univ, Dept Chem & Mat Engn, Green Technol Res Ctr, Tao Yuan 33302, Taiwan

[2] Chang Gung Univ, Biosensor Grp, Biomed Engn Res Ctr, Tao Yuan 33302, Taiwan

[3] Ind Technol Res Inst, Elect & Optoelect Res Labs, Hsinchu 31040, Taiwan

[4] Chung Shan Inst Sci & Technol, Chem Syst Res Div, Tao Yuan 325, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 31期

关键词：

ACID DOPED POLYBENZIMIDAZOLE; ENHANCED ELECTRON-TRANSFER; HORSERADISH-PEROXIDASE; ELECTROCHEMICAL BIOSENSOR; GOLD ELECTRODE; FUEL-CELLS; NANOPARTICLES; IMMOBILIZATION; MEMBRANES; FILM;

D O I：

10.1021/jp202262e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A three-dimensional composite was prepared from polybenzimidazole and carboxylated multiwalled carbon nanotubes (PBI-MWCNT-COOH). The composite was used to modify gold (Au) electrodes for hydrogen peroxide (H2O2) detection. The carboxylated nanotubes acted as a reducing agent, reacting with H2O2 to form the nanotube peroxy acid MWCNT-COOOH. The peroxy acid in turn oxidized the mine site of PBI to form PBI N-oxide, which could be electrochemically reduced to PBI, resulting in a current signal proportional to the peroxide concentration. Under optimal conditions, the amperometric response to H2O2 was linear for concentrations from 6.25 mu M to 10 mM, with high sensitivity (617.3 mu A mM(-1) cm(-2)) and rapid response (2.2 s) at an applied potential of -0.37 V. The sensor also displayed high selectivity and excellent stability.

引用

页码：15182 / 15190

页数：9

共 44 条

[1] Highly Sensitive Amperometric Cholesterol Biosensor Based on Pt-Incorporated Fullerene-like ZnO Nanospheres [J].