Kinetics of Electrocatalytic Oxygen Reduction Reaction over an Activated Glassy Carbon Electrode in an Alkaline Medium

被引：6

作者：

Siddika, Munira ^{[1
]}

Hosen, Nazmul ^{[2
]}

Althomali, Raed H. ^{[3
]}

Al-Humaidi, Jehan Y. ^{[4
]}

Rahman, Mohammed M. ^{[5
,6
]}

Hasnat, Mohammad A. ^{[1
]}

机构：

[1] Shahjalal Univ Sci & Technol, Sch Phys Sci, Dept Chem, Electrochem & Catalysis Res Lab ECRL, Sylhet 3114, Bangladesh

[2] Univ Southern Mississippi, Dept Chem & Biochem, Hattiesburg, MS 39406 USA

[3] Prince Sattam Bin Abdulaziz Univ, Coll Art & Sci, Dept Chem, Wadi Al Dawasir 11991, Saudi Arabia

[4] Princess Nourah Bint Abdulrahman Univ, Coll Sci, Dept Chem, POB 84428, Riyadh 11671, Saudi Arabia

[5] King Abdulaziz Univ, Fac Sci, Ctr Excellence Adv Mat Res CEAMR, Jeddah 21589, Saudi Arabia

[6] King Abdulaziz Univ, Fac Sci, Chem Dept, Jeddah 21589, Saudi Arabia

来源：

CATALYSTS | 2024年 / 14卷 / 03期

关键词：

oxygen reduction reaction; activated glassy carbon; hydrogen peroxide; fuel; hydrodynamic voltammogram; ELECTROCHEMICAL REDUCTION; HYDROGEN-PEROXIDE; ACID; SURFACE; OXIDE; NANOPARTICLES; GENERATION; DEPOSITION;

D O I：

10.3390/catal14030164

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hydrogen peroxide is a promising substitute for fossil fuels because it produces non-hazardous by-products. In this work, a glassy carbon GC was anodized in sulphuric acid at +1.8 V to prepare the working electrode. It was utilized to investigate the oxygen reduction reaction (ORR) in a basic medium containing 0.1 M NaOH as a supporting electrolyte. The objective of this investigation was to synthesize hydrogen peroxide. X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), linear polarization, cyclic voltammetry (CV), and rotating disk electrode voltammetry (RDE) were performed for characterization and investigation of the catalytic properties. The RDE analysis confirmed that oxygen reduction reactions followed two electrons' process at an activated GC electrode. Hence, the prepared electrode generated hydrogen peroxide from molecular oxygen at a potential of around -0.35 V vs. Ag/AgCl (sat. KCl), significantly lower than the pristine GC surface. The transfer coefficient, standard reduction potential, and standard rate constant were estimated to be 0.75, -0.27 V, and 9.5 x 10-3 cm s-1, respectively.

引用

页数：11

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