High efficiency electrochemical reduction of CO2 beyond the two-electron transfer pathway on grain boundary rich ultra-small SnO2 nanoparticles

2018 ◽  
Vol 6 (22) ◽  
pp. 10313-10319 ◽  
Author(s):  
Chenglu Liang ◽  
Byoungsu Kim ◽  
Shize Yang ◽  
Yang Liu Yang Liu ◽  
Cristiano Francisco Woellner ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Grain Boundary ◽  
Electrochemical Reduction ◽  
High Efficiency ◽  
Sno2 Nanoparticles ◽  
Electron Transfer Pathway ◽  
Reduction Of Co2

Grain boundary rich ultra-small SnO2 nanoparticles exhibited high total FEs towards electrochemical reduction of CO2 with products beyond CO and HCOO−.

scholarly journals Arc Plasma Deposited Copper and Gold Nanoparticles on FTO Substrate for Electrochemical Reduction of CO2

2019 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
High Efficiency ◽  
Plasma Deposition ◽  
Arc Plasma ◽  
Faradaic Efficiency ◽  
Electro Deposition ◽  
Electro Catalysis ◽  
Reduction Of Co2

A composite of copper and gold nanoparticles was deposited using arc plasma deposition on the conductive FTO substrate for the electrochemical reduction of CO2 . The use of arc plasma deposition system allows the nanoparticles to be implanted onto the substrate as opposed to the commonly used methods of vacuum deposition or electro deposition. This unique structure reduced the CO2 to produce formic acid with up to 60% faradaic efficiency. Copper and gold nanoparticles have never previously been reported to produce formic acid with such high efficiency, suggesting that the co-deposition technique of implanted nanoparticles can provide an interesting future avenue in the field of electrochemical reduction of CO2 . The surface analysis of the electrodes is presented here along with potential dependent faradaic efficiency of the electro catalysis.

Thin-walled hollow Au–Cu nanostructures with high efficiency in electrochemical reduction of CO2 to CO

2018 ◽  
Vol 5 (7) ◽  
pp. 1524-1532 ◽  
Author(s):  
Jun-Hao Zhou ◽  
Da-Wei Lan ◽  
Sheng-Song Yang ◽  
Yu Guo ◽  
Kun Yuan ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
High Efficiency ◽  
Kirkendall Effect ◽  
Galvanic Replacement ◽  
Thin Walled ◽  
Reduction Of Co2 ◽  
Cu Nanostructures

Thin-walled hollow Au–Cu nanostructures were synthesized via galvanic replacement and the Kirkendall effect between copper and gold, and they showed high efficiency for electro-reduction of CO2 to CO.

scholarly journals A large π-conjugated ligand in metal-organic framework as opticalswitch to regulate the electron transfer pathway for highly selective reduction of CO2 to CH4

2021 ◽  
Author(s):  
Pei-Qin Liao ◽  
Yuanyuan Liu ◽  
Hao-Lin Zhu ◽  
Ning-Yu Huang ◽  
Xiao-Ming Chen
Keyword(s):  
Electron Transfer ◽  
High Performance ◽  
Theoretical Calculations ◽  
Metal Organic Framework ◽  
Photocatalytic Reduction ◽  
Faradaic Efficiency ◽  
Electron Transfer Pathway ◽  
Metal Organic ◽  
Reduction Of Co2 ◽  
Organic Framework

Abstract Here, we report a Cu-based metal-organic framework (Cu-DBC), constructed by the large π-conjugated ligand dibenzo-[g,p]chrysene-2,3,6,7,10,11,14,15-octaol and the square-pyramidal CuO5 nodes, as the photo-coupled electrocatalysts for CO2 reduction to CH4. Under visible light, it exhibits high performance for photocatalytic reduction of CO2 to CH4 with selectivity of 100% and rate of 1.04 μmol g-1 h-1, without additional photosensitizer. Importantly, at -1.4 V vs. RHE, it exhibits high performance for photo-coupled electroreduction of CO2 to CH4 with a Faradaic efficiency (CH4) of 93% and current density of 10.4 A g-1. Theoretical calculations, in-situ infrared spectroscopy investigation and Mott–Schottky measurements showed that the large conjugated ligand in Cu-DBC has the suitable lowest unoccupied molecular orbital (LUMO) to match well with the reduction potential of CO2/CH4 and serves as a photoswitch to regulate electron transfer pathway to the metal center, resulting highly selective photocatalytic reduction or photo-coupled electroreduction of CO2 to CH4.

Sign in / Sign up

Export Citation Format

Share Document