Tuning of visible light-driven CO2 reduction and hydrogen evolution activity by using POSS-modified porous organometallic polymers

2021 ◽  
Author(s):  
Wei-Jia Wang ◽  
Kai-Hong Chen ◽  
Zhi-Wen Yang ◽  
Bo-Wen Peng ◽  
Liang-Nian He
Keyword(s):  
Renewable Energy ◽  
Hydrogen Evolution ◽  
Co2 Reduction ◽  
Energy Systems ◽  
Reduction Reaction ◽  
Organometallic Polymers ◽  
Renewable Energy Systems ◽  
Visible Light Driven ◽  
Significant Pathway ◽  
Co2 Reduction Reaction

Significant efforts have been devoted to photochemical CO2 reduction reaction (CO2RR) as a significant pathway for the development of renewable energy systems. However, competitive hydrogen evolution reaction (HER) greatly impedes...

scholarly journals Effect of the oxidation state and morphology of SnOx-based electrocatalysts on the CO2 reduction reaction

2021 ◽  
Author(s):  
Lara G. Puppin ◽  
Luís F. da Silva ◽  
Marcelo Carmo ◽  
Hamilton Varela ◽  
Osmando F. Lopes
Keyword(s):  
Particle Size ◽  
Renewable Energy ◽  
Carbon Cycle ◽  
Formic Acid ◽  
Oxidation State ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Reduction Step ◽  
Anthropogenic Carbon ◽  
Co2 Reduction Reaction

AbstractCO2 electrochemical reduction reaction (CO2RR) is an attractive strategy for closing the anthropogenic carbon cycle and storing intermittent renewable energy. Tin-based electrocatalysts exhibit remarkable properties for reducing CO2 into HCOOH. However, the effects of morphology and oxidation state of tin-based electrocatalysts on the performance of CO2 reduction have not been well-described. We evaluate the oxidation state and particle size of SnOx for CO2 reduction. SnOx was effective for converting CO2 into formic acid, reaching a maximum selectivity of 69%. The SnO exhibited high activity for CO2RR compared to SnO2 electrocatalysts. A pre-reduction step of a SnO2 electrocatalyst increased its CO2 reduction performance, confirming that Sn2+ is more active than Sn4+ sites. The microsized SnO2 is more effective for converting CO2 into formic acid than nanosized SnO2, likely due to the impurities of nanosized SnO2. We illuminated the role played by both SnOx particle size and oxidation state on CO2RR performance. Graphic abstract

Theoretical understanding of the electrochemical reaction barrier: a kinetic study of CO2 reduction reaction on copper electrodes

2020 ◽  
Vol 22 (17) ◽  
pp. 9607-9615 ◽  
Author(s):  
Shu-Ting Gao ◽  
Shi-Qin Xiang ◽  
Jun-Lin Shi ◽  
Wei Zhang ◽  
Liu-Bin Zhao
Keyword(s):  
Renewable Energy ◽  
Kinetic Study ◽  
Electrochemical Reduction ◽  
Electrochemical Reaction ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Theoretical Understanding ◽  
Copper Electrodes ◽  
Chemical Products ◽  
Co2 Reduction Reaction

The electrochemical reduction of CO2 is a promising route for converting intermittent renewable energy into storable fuels and useful chemical products.

Metal-organic frameworks derived carbon supported Cu-In bimetallic nanoparticles for highly selective CO2 electroreduction to CO

2021 ◽  
Author(s):  
Xia Ma ◽  
Jianjian Tian ◽  
Min Wang ◽  
Xixiong Jin ◽  
Meng Shen ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Bimetallic Catalysts ◽  
Bimetallic Nanoparticles ◽  
Metal Organic Frameworks ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Co2 Electroreduction ◽  
Metal Organic ◽  
Co2 Reduction Reaction

Cu-based materials are promising electrocatalysts for CO2 reduction reaction (CO2RR). However, they still suffer intense hydrogen evolution, low selectivity and efficiency for CO2RR. In this work, Cu-In bimetallic catalysts for...

Reduction tuning of ultrathin carbon shell armor covering IrP2 for accelerated hydrogen evolution kinetics with Pt-like performance

2021 ◽  
Author(s):  
Wen-Li Yu ◽  
Jing-Qi Chi ◽  
Bin Dong
Keyword(s):  
Renewable Energy ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Energy Systems ◽  
Carbon Shell ◽  
Renewable Energy Systems ◽  
Wide Ph Range ◽  
Ph Range

Developing highly durable electrocatalysts for hydrogen evolution via water splitting over a wide pH range has become increasingly necessary for renewable energy systems.

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

Battery storage for supplementing renewable energy systems

2009 ◽  
Author(s):  
Not Given Author
Keyword(s):  
Renewable Energy ◽  
Energy Systems ◽  
Battery Storage ◽  
Renewable Energy Systems

Advanced Heat/Mass Exchanger Technology for Geothermal and Solar Renewable Energy Systems

2014 ◽  
Author(s):  
Miles Greiner ◽  
Amy Childress ◽  
Sage Hiibel ◽  
Kwang Kim ◽  
Chanwoo Park ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Systems ◽  
Renewable Energy Systems ◽  
Mass Exchanger
Sign in / Sign up

Export Citation Format

Share Document