Journal
SOLID STATE SCIENCES
Volume 98, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.solidstatesciences.2019.106033
Keywords
Propanol; Modified electrode; AgBr NPs; Electrocatalysis; Kinetic; Tafel plots
Ask authors/readers for more resources
The anodic peak current of a modified carbon paste electrode (CPE) with AgBr nanoparticles was increased in cyclic voltammetry (CV) by addition of 1-propanol or 2- propanol to supporting HCl electrolyte at pH 2.5. The kinetic aspects of the modified AgBr-CPE electrode response were studied in the absence and presence of the alcohols. The electrode response was irreversible based on a 135 mV difference for EN- EN and I-pa/I-pe = 0.88 for the (AgBr)-Br-I/(AgBr)-Br-II redox process. The surface coverage concentration of the electrode, Gamma, was about 13.1 mu mot AgBr cm(-2). The charge transfer coefficient, alpha, was 0.72 in HCl that was changed to 0.63 and 0.68 by addition of 1-propanol and 2-propanol in CV experiments, respectively, while its value was respectively changed from 0.72 to 0.61 and 0.51 in Tafel plots in LSV (linear sweep voltammetry). The rate constant value (k) was changed from 0.34 s(-1) to 0.66 and 0.58 s(-1) in CV experiments and from 0.31 s(-1) to 0.58 and 0.51 s(-1) in LSV experiments when the mentioned alcohols were added to the solution, respectively, confirms faster reaction rate in the presence of the alcohols.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available