EDTA Lewis basic molecule as a highly active electrocatalyst for CO2 reduction to CH4

2021 ◽  
Author(s):  
Qian-Wang Chen ◽  
Minxue Huang ◽  
Shipeng Gong ◽  
Changlai Wang ◽  
Yang Yang ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Highly Active

Polydopamine and Barbituric Acid Co-Modified Carbon Nitride Nanospheres for Highly Active and Selective Photocatalytic CO2 Reduction

2018 ◽  
Vol 2019 (15) ◽  
pp. 2058-2064 ◽  
Author(s):  
Mei Li ◽  
Shengbo Zhang ◽  
Xiao Liu ◽  
Jinyu Han ◽  
Xinli Zhu ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Barbituric Acid ◽  
Co2 Reduction ◽  
Highly Active

scholarly journals Trans Influence of Boryl Ligands in CO2 Hydrogenation on Ruthenium Complexes: Theoretical Prediction of Highly Active Catalysts for CO2 Reduction

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1356
Author(s):  
Tian Liu ◽  
Zhangyong Liu ◽  
Lipeng Tang ◽  
Jun Li ◽  
Zhuhong Yang
Keyword(s):  
Active Catalyst ◽  
Co2 Reduction ◽  
Nbo Analysis ◽  
Activation Free Energy ◽  
Highly Active ◽  
Trans Influence ◽  
Bond Property ◽  
Hydride Ligand ◽  
Calculation Results ◽  
Ruthenium Dihydride

In this work, we study the trans influence of boryl ligands and other commonly used non-boryl ligands in order to search for a more active catalyst than the ruthenium dihydride complex Ru(PNP)(CO)H2 for the hydrogenation of CO2. The theoretical calculation results show that only the B ligands exhibit a stronger trans influence than the hydride ligand and are along increasing order of trans influence as follows: –H < –BBr2 < –BCl2 ≈ –B(OCH)2 < –Bcat < –B(OCH2)2 ≈ –B(OH)2 < –Bpin < –B(NHCH2)2 < –B(OCH3)2 < –B(CH3)2 < –BH2. The computed activation free energy for the direct hydride addition to CO2 and the NBO analysis of the property of the Ru–H bond indicate that the activity of the hydride can be enhanced by the strong trans influence of the B ligands through the change in the Ru–H bond property. The function of the strong trans influence of B ligands is to decrease the d orbital component of Ru in the Ru–H bond. The design of a more active catalyst than the Ru(PNP)(CO)H2 complex is possible.

scholarly journals A high-performance oxygen evolution catalyst in neutral-pH for sunlight-driven CO2 reduction

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Li Qin Zhou ◽  
Chen Ling ◽  
Hui Zhou ◽  
Xiang Wang ◽  
Joseph Liao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
High Performance ◽  
Specific Activity ◽  
Co2 Reduction ◽  
Poor Performance ◽  
Electrolysis Cell ◽  
Neutral Ph ◽  
Highly Active ◽  
Order Of Magnitude ◽  
Neutral Conditions

Abstract The efficiency of sunlight-driven reduction of carbon dioxide (CO2), a process mimicking the photosynthesis in nature that integrates the light harvester and electrolysis cell to convert CO2 into valuable chemicals, is greatly limited by the sluggish kinetics of oxygen evolution in pH-neutral conditions. Current non-noble metal oxide catalysts developed to drive oxygen evolution in alkaline solution have poor performance in neutral solutions. Here we report a highly active and stable oxygen evolution catalyst in neutral pH, Brownmillerite Sr2GaCoO5, with the specific activity about one order of magnitude higher than that of widely used iridium oxide catalyst. Using Sr2GaCoO5 to catalyze oxygen evolution, the integrated CO2 reduction achieves the average solar-to-CO efficiency of 13.9% with no appreciable performance degradation in 19 h of operation. Our results not only set a record for the efficiency in sunlight-driven CO2 reduction, but open new opportunities towards the realization of practical CO2 reduction systems.

Formation of lattice-dislocated bismuth nanowires on copper foam for enhanced electrocatalytic CO2 reduction at low overpotential

2019 ◽  
Vol 12 (4) ◽  
pp. 1334-1340 ◽  
Author(s):  
Xiaolong Zhang ◽  
Xinghuan Sun ◽  
Si-Xuan Guo ◽  
Alan M. Bond ◽  
Jie Zhang
Keyword(s):  
Crystal Lattice ◽  
Co2 Reduction ◽  
Bismuth Nanowire ◽  
Highly Active ◽  
Copper Foam ◽  
Bismuth Nanowires ◽  
Low Overpotential

Twisted bismuth nanowire (BiNW) with abundant crystal lattice dislocations is a highly active electrocatalyst for CO2 reduction to formate at low overpotential.

Construction of Highly Active and Selective Polydopamine Modified Hollow ZnO/Co3O4 p-n Heterojunction Catalyst for Photocatalytic CO2 Reduction

2020 ◽  
Vol 8 (30) ◽  
pp. 11465-11476 ◽  
Author(s):  
Mei Li ◽  
Shengbo Zhang ◽  
Liwen Li ◽  
Jinyu Han ◽  
Xinli Zhu ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Highly Active

scholarly journals A highly active nickel electrocatalyst shows excellent selectivity for CO2 reduction in acidic media

2016 ◽  
Vol 7 (2) ◽  
pp. 1521-1526 ◽  
Author(s):  
Gaia Neri ◽  
Iain M. Aldous ◽  
James J. Walsh ◽  
Laurence J. Hardwick ◽  
Alexander J. Cowan
Keyword(s):  
Co2 Reduction ◽  
Acidic Media ◽  
Highly Active ◽  
Excellent Selectivity ◽  
Carbon Based

The development of selective electrocatalysts for CO2 reduction in water offers a sustainable route to carbon based fuels and feedstocks.

scholarly journals Beyond the catalyst: how electrode and reactor design determine the product spectrum during electrochemical CO2 reduction

2020 ◽  
Author(s):  
Matthias Wessling
Keyword(s):  
Catalyst Activity ◽  
Co2 Reduction ◽  
Reactor Design ◽  
Gas Diffusion ◽  
High Current ◽  
Highly Active ◽  
Electrochemical Membrane Reactor ◽  
Ohmic Losses ◽  
Electrochemical Co2 Reduction ◽  
Stepwise Development

As a remedy to the increasing concentration of greenhouse gases and depleting fossil resources, the electrochemical CO2 reduction closes the carbon cycle and provides an alternative carbon feedstock to the chemical and energy industry. While most contemporary research focuses on the catalyst activity, we emphasize the importance of the reactor design for an energetic efficient (EE) conversion. A design strategy for an electrochemical membrane reactor reducing CO2 to hydrogen, carbon monoxide (CO) and ethylene (C2H4) is developed. We present the stepwise development from an H-cell like setup using full-metal electrodes to a cell with gas diffusion electrodes (GDE) towards high current efficiencies (CE) at high current densities (CD). At 300 mA.cm−2 a CO-CE of 56% for a Ag GDE and a C2H4-CE of 94% for a Cu GDE are measured. The incorporation of the developed GDEs into a zero-gap assembly eliminates ohmic losses and maximizes EE, however the acidic environment of the ion exchange membrane inhibits CO2 reduction. As a compromise a thin liquid buffer layer between cathode and membrane is a prerequisite for a highly active conversion. We demonstrate that industrial relevant CDs with high CEs and EEs can only be achieved by moving beyond today’s research form catalyst development only to an integrated reactor design, which allows to exploit the viable potential of electrochemical CO2 reduction catalysts.

Sign in / Sign up

Export Citation Format

Share Document