Highly efficient and durable aqueous electrocatalytic reduction of CO2 to HCOOH with a novel bismuth–MOF: experimental and DFT studies

2020 ◽  
Vol 8 (19) ◽  
pp. 9776-9787 ◽  
Author(s):  
Xurui Zhang ◽  
Yanxing Zhang ◽  
Qingqing Li ◽  
Xiaodong Zhou ◽  
Qingyu Li ◽  
...  

Electrochemical reduction of carbon dioxide (ERCO2) to low-carbon fuel and useful chemicals, which can simultaneously store renewable energy and recover CO2 in a green manner, has proven to be a viable energy storage and conversion strategy.

2019 ◽  
Vol 9 (19) ◽  
pp. 5339-5349 ◽  
Author(s):  
Pinki Devi ◽  
Karan Malik ◽  
Ekta Arora ◽  
Saswata Bhattacharya ◽  
V. Kalendra ◽  
...  

For the clean and sustainable development, sequestration of carbon dioxide (CO2) through electrocatalytic reduction to produce high-value industrial precursors, such as CO, is a promising avenue.


2017 ◽  
Vol 19 (10) ◽  
pp. 2406-2415 ◽  
Author(s):  
Chiara Genovese ◽  
Claudio Ampelli ◽  
Siglinda Perathoner ◽  
Gabriele Centi

A study on the mechanism of C–C bond formation in the electrocatalytic reduction of CO2 to acetic acid with Cu/CNT electrocatalysts.


2021 ◽  
Author(s):  
Shelby L. Hooe ◽  
Juan Moreno ◽  
Amelia Reid ◽  
Emma Cook ◽  
Charles Machan

The electrocatalytic reduction of CO2 represents an appealing method for converting renewable energy sources into value-added chemical feedstocks. Here, we report a co-electrocatalytic system for the reduction of CO2 to CO comprised of a molecular Cr complex, Cr(tbudhbpy)Cl(H2O) 1, where 6,6′-di(3,5-di-tert-butyl- 2-phenolate)-2,2′-bipyridine = [tbudhbpy]2- and dibenzothiophene-5,5-dioxide (DBTD) as a redox mediator which achieves high activity (1.51-2.84 x 105 s–1) and quantitative selectivity. Under aprotic or protic conditions, DBTD produces a co-electrocatalytic response with 1 by coordinating trans to the site of CO2 binding and mediating electron transfer from the electrode with quantitative efficiency for CO. This assembly is in part reliant on through-space electronic conjugation between the π frameworks of DBTD and the bpy fragment of the catalyst ligand, with important contributions from dispersion interactions and weak sulfone coordination to Cr. Experimental and computational results suggest that this interaction stabilizes a key intermediate in a new aprotic catalytic pathway and lowers the rate-determining transition state under protic conditions. To the best of our knowledge through-space electronic conjugation has not been explored in molecular electrocatalytic systems.<br>


2021 ◽  
Author(s):  
Shelby L. Hooe ◽  
Juan Moreno ◽  
Amelia Reid ◽  
Emma Cook ◽  
Charles Machan

The electrocatalytic reduction of CO2 represents an appealing method for converting renewable energy sources into value-added chemical feedstocks. Here, we report a co-electrocatalytic system for the reduction of CO2 to CO comprised of a molecular Cr complex, Cr(tbudhbpy)Cl(H2O) 1, where 6,6′-di(3,5-di-tert-butyl- 2-phenolate)-2,2′-bipyridine = [tbudhbpy]2- and dibenzothiophene-5,5-dioxide (DBTD) as a redox mediator which achieves high activity (1.51-2.84 x 105 s–1) and quantitative selectivity. Under aprotic or protic conditions, DBTD produces a co-electrocatalytic response with 1 by coordinating trans to the site of CO2 binding and mediating electron transfer from the electrode with quantitative efficiency for CO. This assembly is in part reliant on through-space electronic conjugation between the π frameworks of DBTD and the bpy fragment of the catalyst ligand, with important contributions from dispersion interactions and weak sulfone coordination to Cr. Experimental and computational results suggest that this interaction stabilizes a key intermediate in a new aprotic catalytic pathway and lowers the rate-determining transition state under protic conditions. To the best of our knowledge through-space electronic conjugation has not been explored in molecular electrocatalytic systems.<br>


Author(s):  
Xiaoyan Wang ◽  
Zhiyong Wang ◽  
Xianbo Jin

The size of the primary particles of nanoporous Bi has a great impact on the electrocatalytic performance of Bi for the reduction of CO2 to formate.


Author(s):  
Fu Liu ◽  
Xingzhong Guo ◽  
Yang Hou ◽  
Fan Wang ◽  
Chang Zou ◽  
...  

This paper provides a controllable process to prepare stable and efficient water splitting electrocatalysts which can be applied to renewable energy storage and conversion.


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