Acceleration of Electrochemical CO2 Reduction to Formate at the Sn/Reduced Graphene Oxide Interface

ACS Catalysis ◽  
2021 ◽  
pp. 3310-3318
Author(s):  
Takuya Tsujiguchi ◽  
Yusuke Kawabe ◽  
Samuel Jeong ◽  
Tatsuhiko Ohto ◽  
Suresh Kukunuri ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Co2 Reduction ◽  
Oxide Interface ◽  
Electrochemical Co2 Reduction ◽  
Reduced Graphene

scholarly journals Ni-N-Doped Carbon-Modified Reduced Graphene Oxide Catalysts for Electrochemical CO2 Reduction Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 561
Author(s):  
Fangyuan Wang ◽  
Yu Liu ◽  
Zhiling Song ◽  
Zhichao Miao ◽  
Jinping Zhao
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Current Density ◽  
Co2 Reduction ◽  
Textural Properties ◽  
Reduction Reaction ◽  
Carbon Neutrality ◽  
Electrochemical Co2 Reduction ◽  
Reduced Graphene ◽  
Co2 Reduction Reaction

Electrochemical CO2 reduction reaction (CO2RR) is eliciting considerable attention in relation to the carbon cycle and carbon neutrality. As for the practical application of CO2RR, the electrocatalyst is a crucial factor, but, even so, designing and synthesizing an excellent catalyst remains a significant challenge. In this paper, the coordination compound of Ni ions and dimethylglyoxime (DMG) was employed as a precursor to modify reduced graphene oxide (rGO) for CO2RR. The textural properties and chemical bonds of as-obtained rGO, N–C–rGO, Ni–rGO, Ni–N–C, and Ni–N–C–rGO materials were investigated in detail, and the role of Ni, N–C, and rGO in the CO2RR were researched and confirmed. Among all the catalysts, the Ni–N–C–rGO showed the optimal catalytic activity and selectivity with a high current density of 10 mA cm−2 and FE(CO)% of 85% at −0.87 V vs. RHE. In addition, there was no obvious decrease in activity for 10 h. Therefore, the Ni–N–C–rGO is a promising catalyst for CO2RR to CO.

scholarly journals Effect of Ag2S Nanocrystals/Reduced Graphene Oxide Interface on Hydrogen Evolution Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 948
Author(s):  
Chen Zhao ◽  
Zhi Yu ◽  
Jun Xing ◽  
Yuting Zou ◽  
Huiwen Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Fossil Fuels ◽  
Composite Catalyst ◽  
Oxide Interface ◽  
Electrochemical Catalyst ◽  
Reduced Graphene

The development of efficient electrocatalyst to produce molecular hydrogen from water is receiving considerable attention, in an effort to decrease our reliance on fossil fuels. The prevention of the aggregation of active sites during material synthesis, in order to increase charge transport properties of electrocatalysts, is needed. We have designed, synthesized, and studied a Ag2S/reduced graphene oxide (rGO) electrochemical catalyst (for hydrogen evolution) from water. The Ag2S nanocrystals were synthesized by the solvothermal method in which the rGO was added. The addition of the rGO resulted in the formation of smaller Ag2S nanocrystals, which consequently increased the electrical conductivity of the composite catalyst. The composite catalyst showed a higher electrochemical catalytic activity than the one with an absence of rGO. At a current density of 10 mA/cm2, a low overpotential of 120 mV was obtained. A Tafel slope of 49.1 mV/dec suggests a Volmer–Herovsky mechanism for the composite catalyst. These results may provide a novel strategy for developing hydrogen evolution reaction (HER) electrocatalysts, via the combining of a nano-semiconductor catalyst with a 2D material.

Synthesis of BiVO4 quantum dots/reduced graphene oxide composites for CO2 reduction

2019 ◽  
Vol 102 ◽  
pp. 104578 ◽  
Author(s):  
Lu Chen ◽  
Maolin Zhang ◽  
Jianlong Yang ◽  
Yunxia Li ◽  
Yuvaraj Sivalingam ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Co2 Reduction ◽  
Reduced Graphene ◽  
Oxide Composites
Sign in / Sign up

Export Citation Format

Share Document