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以羧基化的多壁碳纳米管(C-MWNT)为电催化材料制成了羧基化多壁碳纳米管粉末微电极(C-MWNT-PME)。采用循环伏安等测试方法研究了O,O-二丁基二硫代磷酸锌(ZBPD)在C-MWNT-PME上的电氧化行为,讨论了扫描速率和底物浓度对其电氧化行为的影响,并进一步研究了C-MWNT-PME在ZBPD电氧化过程中的稳定性。结果表明,多壁碳纳米管经羧基化处理后,其对ZBPD电氧化反应的催化活性得到了明显的提高;ZBPD在C-MWNT-PME上的电氧化反应是一个受扩散控制的不可逆过程;C-MWNT-PME在ZBPD的电氧化过程中具有良好的稳定性。
Carboxylated multi-walled carbon nanotube powder microelectrodes (C-MWNT-PME) were prepared using carboxylated multi-walled carbon nanotubes (C-MWNTs) as electrocatalytic materials. The electrochemical oxidation behavior of Z, O-dibutyldithiophosphates (ZBPD) on C-MWNT-PME was studied by cyclic voltammetry. The effects of scan rate and substrate concentration on the electrooxidation behavior of The stability of C-MWNT-PME during ZBPD electrooxidation was further studied. The results showed that the catalytic activity of multi-walled carbon nanotubes (CNTs) on the ZBPD electrooxidation was significantly improved after carboxylation treatment. The electrooxidation of ZBPD on C-MWNT-PME was an irreversible diffusion-controlled process. C-MWNT-PME has good stability during the electrooxidation of ZBPD.