Preparation of platinum-modified boron-doped diamond for electroreduction of CO2

International Symposium on Current Progress in Functional Materials

Jasril^1 ; Gunlazuardi, J.^1 ; Ivandini, T.A.^1

Department of Chemistry, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

关键词: Boron doped diamond;    Chronoamperometry techniques;    Deposition potential;    Electro reduction;    Electroreduction of CO2;    Modified electrodes;    Optimum conditions;    Platinum modified;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/188/1/012037/pdf
DOI  :  10.1088/1757-899X/188/1/012037

来源: IOP

【 摘 要 】

Metal-modified boron-doped diamond has been prepared for preliminary study of CO2electroreduction. Pt was electrodeposited at boron-doped diamond (BDD) by using chronoamperometry technique. The precursor metal solution concentration of 6 mM was applied with deposition potentials of -0.3 V (vs Ag/AgCl). Characterization by using FESEM and XPS confirmed the presence of Pt on the surface of BDD. Cyclic voltammetry was applied to obtain an optimum condition for electroreduction of CO2. CO2dissolved in 0.1 M NaCl and 0.1 M Na2SO4solutions were applied. A reduction peak, attributable to CO2, appeared at a potential of -0.7 V (vs Ag/AgCl) in NaCl solution, while no peak was observed in Na2SO4solution. The result indicated that the metal-modified electrodes has successfully prepared as a working electrode for CO2electroreduction.