Facile Deposition of Cu−SnOx Hybrid Nanostructures on Lightly Boron‐Doped Diamond Electrodes for CO2 Reduction
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2018-06-25 |
| Journal | ChemElectroChem |
| Authors | Nitish Roy, Norihiro Suzuki, Yukihiro Nakabayashi, Yuiri Hirano, Hiroshi Ikari |
| Institutions | Tokyo University of Science |
| Citations | 28 |
Abstract
Section titled “Abstract”Abstract In this work, we report a facile synthesis of Cu−SnO x hybrid nanostructures on lightly boron‐doped diamond (BDD L ) electrodes by a potentiodynamic electrodeposition method. The deposition potential for Cu−SnO x hybrid nanostructures was cycled between 0 to −1.0 V vs Ag/AgCl for five consecutive runs at a scan rate of 50 mV/sec. The growth of the Cu−SnO x hybrid nanostructures on BDD L was optimized by varying the number of potentiodynamic deposition cycles and precursor concentration. A uniform particle size distribution of Cu−SnO x was obtained on BDD L using 10 mM CuSO 4 and 5 mM SnCl 2 in 50 mM aqueous NaNO 3 . Detail of surface morphology and surface elemental composition of the optimized Cu−SnO x hybrid nanostructures modified BDD L electrodes were characterized. The optimized Cu−SnO x hybrid nanostructures on BDD L were found to be in the size range of 50 to 100 nm with a 3 to 10 nm SnO x ‐rich shell. This optimized Cu−SnO x modified BDD L electrode was tested for electrochemical CO 2 reduction reaction in aqueous electrolyte and found to produce primarily CO with a Faradaic Efficiency of up to 82.5 % at −1.6 V vs Ag/AgCl.