Electrocatalysis ( IF 2.7 ) Pub Date : 2019-08-18 , DOI: 10.1007/s12678-019-00548-z W. Kaliszczak , A. Nosal-Wiercińska
The presence of mixed 6-thioguanine-nonionic surfactant adsorption layers affects the mechanism and kinetics of the irreversible Bi(III) ion electroreduction process in chlorates(VII). Tween 80 and Triton X-100 change the dynamics of the catalytic effects of 6-thioguanine on Bi(III) ion electroreduction with the tendency of inhibition. The mechanism of catalytic activity of 6-thioguanine is associated with formation of complexes under specific conditions which exist on the electrode surface. The effects of both 6TG and suitable surfactant mixture on the first electron transfer are much greater than those on the transition of other electrons. The Bi-6TG type complex plays the main role in the Bi-6-thioguanine-Tween 80 or Bi-6-thioguanine-Triton X-100 systems, as 6-thioguanine dominates in the formation of adsorption equilibria of the studied mixtures.
中文翻译:
混合的6-硫鸟嘌呤-非离子表面活性剂吸附层对Bi(III)离子电还原动力学和机理的影响
混合的6-硫代鸟嘌呤-非离子表面活性剂吸附层的存在影响了氯酸盐(VII)中不可逆的Bi(III)离子电还原过程的机理和动力学。Tween 80和Triton X-100改变了6-硫鸟嘌呤对Bi(III)离子电还原的催化作用的动力学,具有抑制的趋势。6-硫鸟嘌呤的催化活性机理与在电极表面上存在的特定条件下形成络合物有关。6TG和合适的表面活性剂混合物对第一次电子转移的影响远大于对其他电子跃迁的影响。Bi-6TG型配合物在Bi-6-硫鸟嘌呤-吐温80或Bi-6-硫鸟嘌呤-Triton X-100系统中起主要作用,