Comment on “Photochemical reduction of carbon dioxide coupled with water oxidation using various soft-oxometalate (SOM) based catalytic systems” (J. Mater. Chem. A, 2016, 4, 8875–8887)

2019 ◽  
Vol 7 (40) ◽  
pp. 23234-23240
Author(s):  
Tianbo Liu
Keyword(s):  
Carbon Dioxide ◽  
Water Oxidation ◽  
Ethical Issues ◽  
Photochemical Reduction ◽  
Catalytic Systems

In this Comment, I propose several points of serious scientific and ethical issues in the article from Roy et al. [J. Mater. Chem. A, 2016, 4, 8875–8887].

scholarly journals Photochemical reduction of carbon dioxide coupled with water oxidation using various soft-oxometalate (SOM) based catalytic systems

2016 ◽  
Vol 4 (22) ◽  
pp. 8875-8887 ◽  
Author(s):  
Santu Das ◽  
Subharanjan Biswas ◽  
Tuniki Balaraju ◽  
Soumitra Barman ◽  
Ramudu Pochamoni ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Oxide ◽  
Water Oxidation ◽  
Oxide Catalysts ◽  
Metal Oxide Catalysts ◽  
Photochemical Reduction ◽  
Catalytic Systems

We report soft-oxometalate catalytic systems based on various metal oxide catalysts to oxidize H2O and utilize the generated H+s and e−s for reduction of CO2 with a TON of 1366 (effectively 1.4 x 106).

Photochemical Reduction of Carbon Dioxide Catalyzed by a Ruthenium-Substituted Polyoxometalate

2010 ◽  
Vol 16 (4) ◽  
pp. 1356-1364 ◽  
Author(s):  
Alexander M. Khenkin ◽  
Irena Efremenko ◽  
Lev Weiner ◽  
Jan M. L. Martin ◽  
Ronny Neumann
Keyword(s):  
Carbon Dioxide ◽  
Photochemical Reduction

Hydroformylation of 1-octene in supercritical carbon dioxide: Can alkylation of arylphosphines with tertbutyl groups lead to soluble and active catalytic systems?

2008 ◽  
Vol 46 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Alessandro Galia ◽  
Andrea Cipollina ◽  
Giuseppe Filardo ◽  
Onofrio Scialdone ◽  
Michel Ferreira ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Catalytic Systems ◽  
Supercritical Carbon

ChemInform Abstract: Coupling Carbon Dioxide Reduction with Water Oxidation in Nanoscale Photocatalytic Assemblies

ChemInform ◽  
2016 ◽  
Vol 47 (30) ◽  
Author(s):  
Wooyul Kim ◽  
Beth Anne McClure ◽  
Eran Edri ◽  
Heinz Frei
Keyword(s):  
Carbon Dioxide ◽  
Water Oxidation ◽  
Carbon Dioxide Reduction

scholarly journals Mediator-assisted water oxidation by the ruthenium “blue dimer” cis,cis-[(bpy)2(H2O)RuORu(OH2)(bpy)2]4+

2008 ◽  
Vol 105 (46) ◽  
pp. 17632-17635 ◽  
Author(s):  
Javier J. Concepcion ◽  
Jonah W. Jurss ◽  
Joseph L. Templeton ◽  
Thomas J. Meyer
Keyword(s):  
Carbon Dioxide ◽  
Electron Transfer ◽  
Renewable Energy ◽  
Photosystem Ii ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxygenic Photosynthesis ◽  
Reduced Water ◽  
Insight Into ◽  
Recent Insight

Light-driven water oxidation occurs in oxygenic photosynthesis in photosystem II and provides redox equivalents directed to photosystem I, in which carbon dioxide is reduced. Water oxidation is also essential in artificial photosynthesis and solar fuel-forming reactions, such as water splitting into hydrogen and oxygen (2 H2O + 4 hν → O2 + 2 H2) or water reduction of CO2 to methanol (2 H2O + CO2 + 6 hν → CH3OH + 3/2 O2), or hydrocarbons, which could provide clean, renewable energy. The “blue ruthenium dimer,” cis,cis-[(bpy)2(H2O)RuIIIORuIII(OH2)(bpy)2]4+, was the first well characterized molecule to catalyze water oxidation. On the basis of recent insight into the mechanism, we have devised a strategy for enhancing catalytic rates by using kinetically facile electron-transfer mediators. Rate enhancements by factors of up to ≈30 have been obtained, and preliminary electrochemical experiments have demonstrated that mediator-assisted electrocatalytic water oxidation is also attainable.

Article

1998 ◽  
Vol 76 (2) ◽  
pp. 228-233
Author(s):  
Kiyohisa Ohta ◽  
Youko Ueda ◽  
Satoshi Nakaguchi ◽  
Takayuki Mizuno
Keyword(s):  
Carbon Dioxide ◽  
Formic Acid ◽  
Maximum Yield ◽  
Practical Interest ◽  
Silicate Rock ◽  
Photocatalytic Reduction ◽  
Photochemical Reduction ◽  
Experimental Conditions ◽  
Illumination Time ◽  
Silicate Rocks

The photocatalytic reduction of CO2 using copper-loaded silicate rocks has been reported. The Cu-silicate rock powders suspended in the solution were illuminated with sunlight. Amphibolite, gneiss, granite, granodiorite, phyllite, quartzdiorite, and shale, which are quite ordinary rocks, were tested as substrates (silicate rock) of the catalyst. These catalysts were specific for the formation of formic acid. The effects of amounts of copper, illumination time, and temperature were investigated on photoreduction of CO2. The 30% Cu-loaded quartzdiorite (0.3 g/g) in these Cu rocks was the best catalyst. The formation of formic acid on the Cu-silicate rock increased with time up to 10 h after which the formation decreased, and then became constant. The formic acid formation decreased with temperature for 10 h sunlight illumination. For the photochemical reduction of CO2, a relatively low temperature was suitable. With photochemical reduction, the maximum yield of formic acid was 54 nmol/g under optimum experimental conditions. The carbon dioxide reduction system developed might well become of practical interest for the photochemical production of raw materials for the photochemical industry.Key words: photocatalytic reduction of carbon dioxide, formic acid, copper-loaded silicate rocks, temperature effect, illumination time.

Sign in / Sign up

Export Citation Format

Share Document