Ag Displacement on Cu Foam with Additives for Electrochemical Reduction of Carbon Dioxide to Carbon Monoxide

2017 ◽  
Vol 38 (9) ◽  
pp. 1085-1090 ◽  
Author(s):  
Hyunju Lee ◽  
Sang Hyun Ahn

2019 ◽  
Vol 23 (04n05) ◽  
pp. 453-461
Author(s):  
Sumana Tawil ◽  
Hathaichanok Seelajaroen ◽  
Amorn Petsom ◽  
Niyazi Serdar Sariciftci ◽  
Patchanita Thamyongkit

A clam-shaped molecule comprising a Zn(II)-porphyrin and a Zn(II)-cyclam is synthesized and characterized. Its electrochemical behavior and catalytic activity for homogeneous electrochemical reduction of carbon dioxide (CO[Formula: see text] are investigated by cyclic voltammetry and compared with those of Zn(II)-meso-tetraphenylporphyrin and Zn(II)-cyclam. Under N2-saturated conditions, cyclic voltammetry of the featured complex has characteristics of its two constituents, but under CO2-saturated conditions, the target compound exhibits significant current enhancement. Iterative reduction under electrochemical conditions indicated the target compound has improved stability relative to Zn(II)-cyclam. Controlled potential electrolysis demonstrates that, without addition of water, methane (CH[Formula: see text] is the only detectable product with 1% Faradaic efficiency (FE). The formation of CH4 is not observed under the catalysis of the Zn(II)-porphyrin benchmark compound, indicating that the CO2-capturing function of the Zn(II)-cyclam unit contributes to the catalysis. Upon addition of 3% v/v water, the electrochemical reduction of CO2 in the presence of the target compound gives carbon monoxide (CO) with 28% FE. Dominance of CO formation under these conditions suggests enhancement of proton-coupled reduction. Integrated action of these Zn(II)-porphyrin and Zn(II)-cyclam units offers a notable example of a molecular catalytic system where the cyclam ring captures and brings CO2 into the proximity of the porphyrin catalysis center.



2020 ◽  
Vol MA2020-01 (5) ◽  
pp. 615-615
Author(s):  
Krisara Srimanon ◽  
Atiweena Krittayavathananon ◽  
Sangchai Sarawutanukul ◽  
Montree Sawangphruk


2007 ◽  
Vol 10 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Jun-Won Shin ◽  
You-Sung Kim ◽  
Sang-Hee Lee ◽  
Sang-Phil Lee ◽  
Ho-Jun Lee ◽  
...  


ACS Catalysis ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 4822-4827 ◽  
Author(s):  
Jeremy T. Feaster ◽  
Chuan Shi ◽  
Etosha R. Cave ◽  
Toru Hatsukade ◽  
David N. Abram ◽  
...  




ACS Catalysis ◽  
2021 ◽  
pp. 7350-7357
Author(s):  
Tareq A. Al-Attas ◽  
Nedal N. Marei ◽  
Xue Yong ◽  
Nael G. Yasri ◽  
Venkataraman Thangadurai ◽  
...  


Author(s):  
Hesamoddin Rabiee ◽  
Lei Ge ◽  
Xueqin Zhang ◽  
Shihu Hu ◽  
Mengran Li ◽  
...  

Electrochemical reduction of gaseous feeds such as CO2, CO, and N2 holds promise for sustainable energy and chemical production. Practical application of this technology is impeded by slow mass transport...



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