POLY(THIOPHENE-3-ACETIC ACID)-PALLADIUM NANOPARTICLE COMPOSITE MODIFIED ELECTRODES FOR SUPERSENSITIVE DETERMINATION OF HYDRAZINE  

作　　者：Ou Zhang Hong-mei Yu Li-min Lu Yang-ping Wen 段学民 徐景坤 

机构地区：[1]School of Chemical Engineering,University of Science and Technology Liaoning [2]School of Pharmacy,Jiangxi Science & Technology Normal University

出　　处：《Chinese Journal of Polymer Science》2013年第3期419-426,共8页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos.50963002,51073074);Jiangxi Provincial Department of Education (Nos.GJJ11590,GJJ10678)

摘　　要：A promising electrochemical sensor was fabricated by electrodeposition of Pd nanoparticles （PdNPs） on poly（thiophene-3-acetic acid） （PTAA）-modified glassy carbon electrode （GCE）, forming a PdNPs/PTAA composites-modified GCE （PdNPs/PTAA/GCE）. Scanning electron microscope （SEM） and electrochemical techniques were used for the characterization of these composites. It was found that the PdNPs/PTAA layer was very uniform. ]Electrochemical experiments showed that this proposed PdNPs/PTAA composites-modified electrode exhibited excellent electrocatalytic activity towards the oxidation of hydrazine. Under the optimum conditions, the proposed sensor can be applied to the quantification of hydrazine with a wide linear range from 8.0 × 10-9 mol/L to 1.0 × 10-5 mol/L with a low detection limit of 2.67 × 10-9 mol/L. The experiment results also showed that the sensor exhibited good reproducibility and long-term stability, as well as high selectivity with no interference from other potential competing species.A promising electrochemical sensor was fabricated by electrodeposition of Pd nanoparticles （PdNPs） on poly（thiophene-3-acetic acid） （PTAA）-modified glassy carbon electrode （GCE）, forming a PdNPs/PTAA composites-modified GCE （PdNPs/PTAA/GCE）. Scanning electron microscope （SEM） and electrochemical techniques were used for the characterization of these composites. It was found that the PdNPs/PTAA layer was very uniform. ]Electrochemical experiments showed that this proposed PdNPs/PTAA composites-modified electrode exhibited excellent electrocatalytic activity towards the oxidation of hydrazine. Under the optimum conditions, the proposed sensor can be applied to the quantification of hydrazine with a wide linear range from 8.0 × 10-9 mol/L to 1.0 × 10-5 mol/L with a low detection limit of 2.67 × 10-9 mol/L. The experiment results also showed that the sensor exhibited good reproducibility and long-term stability, as well as high selectivity with no interference from other potential competing species.

关 键 词：Sensor HYDRAZINE NANOCOMPOSITES Pd nanoparticles Conducting polymer. 

分 类 号：O631.3[理学—高分子化学]