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Preparation of poly(carbazole-TEMPO) electrode and its electrochemical performance
Journal of Electroanalytical Chemistry ( IF 4.1 ) Pub Date : 2021-05-10 , DOI: 10.1016/j.jelechem.2021.115352
Pengfei Niu , Haitong Huang , Lingmin Zhao , Chao Zhang , Zhenlu Shen , Meichao Li

Carbazole monomer with a side chain nitroxyl radical 4-(9H-carbazol-9-yl)acetyl-oxy-2,2,6,6-tetramethylpiperidin-1-yloxy (Cz-TEMPO), was designed and synthesized successfully. The corresponding polymer electrode poly(carbazole-TEMPO) (PCz-TEMPO) has been electrochemically prepared in CH3CN solution with different supporting electrolytes. PCz-TEMPO film was homogeneously dispersed on the surface of Pt electrode and characterized by FTIR, SEM, XPS and element mapping. The electrocatalytic performances of PCz-TEMPO electrode for oxidation of benzyl alcohol were investigated by cyclic voltammetry and in situ FTIR spectroscopy. Tetrabutylammonium tetrafluoroborate (TTFB) was the most efficient supporting electrolyte for preparing PCz-TEMPO electrode among the four supporting electrolytes. In addition, the electroactivity of PCz-TEMPO-TTFB electrode remained 94.6% after 100 scanning cycles in 0.1 M NaClO4/CH3CN solution.



中文翻译:

聚咔唑-TEMPO电极的制备及其电化学性能

设计并合成了具有侧链硝酰基自由基4-(9 H-咔唑-9-基)乙酰基氧基-2,2,6,6-四甲基哌啶-1-基氧基(Cz-TEMPO)的咔唑单体。相应的聚合物电极聚(咔唑-TEMPO)(PCz-TEMPO)已在CH 3中进行电化学制备具有不同支持电解质的CN溶液。PCz-TEMPO薄膜均匀分散在Pt电极表面,并通过FTIR,SEM,XPS和元素图谱进行表征。通过循环伏安法和原位FTIR光谱研究了PCz-TEMPO电极对苯甲醇氧化的电催化性能。四氟硼酸四丁基铵(TTFB)是四种支持电解质中制备PCz-TEMPO电极最有效的支持电解质。另外,在0.1 M NaClO 4 / CH 3 CN溶液中进行100个扫描循环后,PCz-TEMPO-TTFB电极的电活性保持94.6%。

更新日期:2021-05-20
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