【摘 要】
：
采用循环伏安法(CV)、计时电量法(CA)和电化学原位红外反射光谱(in situ FTIRS),从分子水平上研究了离子液体[BMIM]BF_4中马来酸在Pt电极上的电化学还原过程。结果表明,[BMIM
【机 构】
：
厦门大学固体表面物理化学国家重点实验室化学化工学院化学系,
论文部分内容阅读
采用循环伏安法(CV)、计时电量法(CA)和电化学原位红外反射光谱(in situ FTIRS),从分子水平上研究了离子液体[BMIM]BF_4中马来酸在Pt电极上的电化学还原过程。结果表明,[BMIM]BF_4中马来酸在Pt电极上的还原是受扩散控制的准可逆过程,测得扩散系数为1.0×10~(-7)cm~2·s~(-1);in situ FTIRS研究发现, [BMIM]BF_4中马来酸在Pt电极上的还原发生在其中的一个羧基位上,即马来酸首先获得一个电子生成阴离子自由基,随后再获得一个电子生成二价阴离子。
Cyclic voltammetry (CV), chronopotentiometry (CA) and in situ FTIRS were used to investigate the effect of maleic acid on Pt electrode in ionic liquid [BMIM] BF 4 Electrochemical reduction process. The results show that the reduction of maleic acid on the Pt electrode in [BMIM] BF_4 is a quasi - reversible process controlled by diffusion. The diffusion coefficient is 1.0 × 10 ~ (-7) cm ~ 2 · s ~ (-1). In situ FTIRS study found that the [BMIM] BF_4 reduction of the maleic acid on the Pt electrode occurs at one of the carboxyl sites, that is, maleic acid first obtains an electron-generating anion radical and then an electron-generating divalent Anion.
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