John paul III - 2-1-2022 at 08:48
Is it possible to oxidize KOCN to KNO3 other than with bacteria? I dont mind if it's uneconomical, as long as it can be done in days or hours
Bedlasky - 2-1-2022 at 19:09
https://sci-hub.se/https://doi.org/10.1016/0013-4686%2894%29...
AJKOER - 3-1-2022 at 14:11
In place of TiO2, one can prepare ZnO photocatalyst, see "Improving photocatalytic activity of ZnO nanorods: A comparison between thermal
decomposition of zinc acetate under vacuum and in ambient air" at https://www.sciencedirect.com/science/article/abs/pii/S13698... .
Also consider a dye related photocatalyst like riboflavin (B12), see "Vitamin B12-Catalyzed Dicarbofunctionalization of Bromoalkenes Under Visible
Light Irradiation" at https://www.thieme.de/en/thieme-chemistry/synform-news-vitam... that works in visible light.
The mechanic here is actually not that hard. The photocatalyst electron hole (h+) at pH 10 resulted in the .OH radical, which can attack NH3 from
NH4+ created from the hydrolysis of CNO-:
h+ + OH- -> .OH
2 H2O + CNO- -> NH4+ + CO3(2-)
NH4+ = H+ + NH3
OH- + H+ = H2O
.OH + NH3 -> .NH2 + H2O
.NH2 + O2 -> Products