(Invited) Electrochemical Reduction of Carbon Dioxide: Controlling Selectivity to Formic Acid and Methanol

2018 ◽  
Author(s):  
Chandan Dey ◽  
Ronny Neumann

<p>A manganese substituted Anderson type polyoxometalate, [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup>, tethered with an anthracene photosensitizer was prepared and used as catalyst for CO<sub>2</sub> reduction. The polyoxometalate-photosensitizer hybrid complex, obtained by covalent attachment of the sensitizer to only one face of the planar polyoxometalate, was characterized by NMR, IR and mass spectroscopy. Cyclic voltammetry measurements show a catalytic response for the reduction of carbon dioxide, thereby suggesting catalysis at the manganese site on the open face of the polyoxometalate. Controlled potentiometric electrolysis showed the reduction of CO<sub>2</sub> to CO with a TOF of ~15 sec<sup>-1</sup>. Further photochemical reactions showed that the polyoxometalate-anthracene hybrid complex was active for the reduction of CO<sub>2</sub> to yield formic acid and/or CO in varying amounts dependent on the reducing agent used. Control experiments showed that the attachment of the photosensitizer to [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup> is necessary for photocatalysis.</p><div><br></div>


ChemSusChem ◽  
2011 ◽  
Vol 4 (9) ◽  
pp. 1301-1310 ◽  
Author(s):  
Arun S. Agarwal ◽  
Yumei Zhai ◽  
Davion Hill ◽  
Narasi Sridhar

2019 ◽  
Vol 7 (40) ◽  
pp. 22879-22883 ◽  
Author(s):  
Ik Seon Kwon ◽  
Tekalign Terfa Debela ◽  
In Hye Kwak ◽  
Hee Won Seo ◽  
Kidong Park ◽  
...  

Zn–In bimetallic nanocrystals exhibit excellent selectivity for electrochemical CO2 reduction to HCOOH, whose efficiency is greatly enhanced with 5% In composition.


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

2014 ◽  
Vol 1 (5) ◽  
pp. 836-849 ◽  
Author(s):  
Xu Lu ◽  
Dennis Y. C. Leung ◽  
Huizhi Wang ◽  
Michael K. H. Leung ◽  
Jin Xuan

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