On the mechanism of high product selectivity for HCOOH using Pb in CO2 electroreduction

2016 ◽  
Vol 18 (14) ◽  
pp. 9652-9657 ◽  
Author(s):  
Seoin Back ◽  
Jun-Hyuk Kim ◽  
Yong-Tae Kim ◽  
Yousung Jung
Keyword(s):  
Electron Transfer ◽  
High Selectivity ◽  
Reduction Reaction ◽  
Transfer Mechanism ◽  
Product Selectivity ◽  
Electron Transfer Mechanism ◽  
Co2 Electroreduction

To understand a high selectivity for HCOOH on the Pb electrode during the CO2 reduction reaction, we suggest a proton-assisted-electron-transfer mechanism, and validate the new mechanism by experimentally measuring onset potentials for CO2 reduction vs. H2 production. We find that the origin of this high selectivity lies in the strong O-affinitive and weak C-, H-affinitive characteristics of Pb.

Green photocatalytic organic transformations by polyoxometalates vs. mesoporous TiO2 nanoparticles: selective aerobic oxidation of alcohols

2015 ◽  
Vol 14 (3) ◽  
pp. 563-568 ◽  
Author(s):  
Theodoros S. Symeonidis ◽  
Ioannis Tamiolakis ◽  
Gerasimos S. Armatas ◽  
Ioannis N. Lykakis
Keyword(s):  
Electron Transfer ◽  
Tio2 Nanoparticles ◽  
Aerobic Oxidation ◽  
Mesoporous Tio2 ◽  
Transfer Mechanism ◽  
Organic Transformations ◽  
Electron Transfer Mechanism ◽  
Nanoparticle Assemblies ◽  
Oxidation Of Alcohols ◽  
Aromatic Alcohols

Decatungstate supported on mesoporous TiO2 nanoparticle assemblies catalyze the selective and efficient oxidation of aromatic alcohols under “green” oxidation conditions. An electron transfer mechanism was predominated under UV-vis irradiation.

Surface photochemistry: Semiconductor mediated reactions of some 1,2-diarylcyclopropanes

1987 ◽  
Vol 65 (5) ◽  
pp. 976-979 ◽  
Author(s):  
Philip A. Carson ◽  
Paul de Mayo
Keyword(s):  
Electron Transfer ◽  
Radical Cations ◽  
Transfer Mechanism ◽  
Electron Transfer Mechanism ◽  
Trans Isomerization

1,2-Diphenylcyclopropane (1) was found to be oxidized on illuminated ZnO in the presence of air while 1-(p-methoxyphenyl)-2-phenylcyclopropane (2) and 1,2-bis(p-methoxyphenyl)cyclopropane (3) were found to be similarly oxidized on illuminated CdS. Compounds 2 and 3 were found, also, to undergo a rapid photochemical cis-trans isomerization on CdS whereas 1 did not undergo such isomerization. An electron transfer mechanism involving formation of the radical cations of the substrates is proposed.

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