Heterogeneous Electron Transfer Rate Constants of Viologen Monocations at a Platinum Disk Electrode

Authors : Naheed Kaukab Bhatti, M. Sadiq Subhani, Ather Yaseen Khan

Pages : 165-180

View : 14 | Download : 8

Publication Date : 9999-12-31

Article Type : Makaleler

Abstract :Experimental values of rate constants for the heterogeneous transfer of electrons to methyl viologen, diquat viologen, benzyl viologen and n-butyl viologen monocations were determined. The process was studied at the surface of a platinum disk in mixtures of water with different aprotic solvents at different temperatures. Theoretical rate constants were evaluated using Marcus' equation, which also contains barrier crossing probability and nuclear frequency. A comparison was made between the theoretical and experimental values of rate constants.
Keywords : Viologen monocations, experimental rate constant for heterogeneous electron transfer process, theoretical rate constant for heterogeneous electron transfer process