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- I read with great interest your recent paper in Catalysis Communications entitled "Photocatalytic reduction of CO2 on FeTiO3/TiO2 photocatalyst". I find this work extremely interesting as it ties in closely with my own work on photochemical CO2 reduction.
- When i was reading your paper i came up with a few questions that i don't feel were addressed fully.
- 1) What is the role of the sodium carbonate in the photlyzed solution?
- 2) How can we determine that the reduction products are not from the sodium bicarbonate, when your proposed mechanism starts from bicarbonate species?
- 3) If the mechanism starts from carbonic acid then discussion of relative rates of carbonic acid formation from gaseous CO2 should be important, yet no mention is made of these kinetics
- I would be most interested to hear if you have, as yet, unpublished data that could allay my fears and bolster your position that a true photochemical carbon dioxide reduction is occurring.
- Thank you for your time.
- Ed Holland
- Cardiff University
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