论文部分内容阅读
制备了一个新的电极-聚苯胺掺杂介孔碳修饰电极(PANI-MC),并且研究了电极的电化学性质。在介孔分子筛SBA-15的孔道中沉积蔗糖,然后在氮气的保护下,1200℃热裂解,生成孔道规则排列的介孔碳(MC);XRD、N2吸附-脱附、TEM等方法表征了介孔碳的结构,用SEM表征了PANI-MC修饰电极的形貌。结果表明:复合电极膜与修饰前的聚苯胺膜形貌不同,与介孔碳形貌相似,介孔碳纳米微粒的大小清洗可辨,长度大约为20~40μm。复合电极循环伏安结果显示:峰电位向负电位方向移动,这可能是因为介孔碳的孔道结构阻碍了离子的转移。同时,还研究了复合电极对Cu2+的相应,表明:电极对低浓度的Cu2+有很好的线性相应,可以作为Cu2+的感应器。
A new polyaniline-doped mesoporous carbon modified electrode (PANI-MC) was prepared and the electrochemical properties of the electrode were investigated. Sucrose was deposited in the pores of the mesoporous molecular sieve SBA-15 and then pyrolyzed at 1200 ℃ under the protection of nitrogen to form mesoporous carbon (MC) with regular pore arrangement. XRD, N2 adsorption-desorption and TEM were used to characterize The structure of mesoporous carbon was characterized by SEM. The results show that the morphology of the composite electrode film is different from that of the PANI film before modification, which is similar to that of the mesoporous carbon. The size of the mesoporous carbon nanoparticles can be cleaned and the length is about 20 ~ 40μm. The cyclic voltammetry of the composite electrode shows that the peak potential shifts to the negative potential, which may be due to the pore structure of mesoporous carbon hinders the transfer of ions. At the same time, the corresponding electrode of Cu2 + is also studied, which shows that the electrode has a good linear response to low concentration of Cu2 + and can be used as a Cu2 + sensor.