Emile Salomon Massima Mouele
Effect of calcination time on the physicochemical properties and photocatalytic performance of carbon and nitrogen co-doped tio2 nanoparticles
Mouele, Emile Salomon Massima; Dinu, Mihaela; Cummings, Franscious; Fatoba, Ojo O; Myint, Myo Tay Zar; Kyaw, Htet Htet; Parau, Anca C; Vladescu, Alina; Francesconi, M. Grazia; Pescetelli, Sara; Di Carlo, Aldo; Agresti, Antonio; Al-Abri, Mohammed; Dobretsov, Sergey; Braic, Mariana; Petrik, Leslie F
Mihaela Dinu firstname.lastname@example.org.
Franscious Cummings email@example.com
Ojo O Fatoba
Myo Tay Zar Myint
Htet Htet Kyaw
Anca C Parau firstname.lastname@example.org.
Alina Vladescu email@example.com.
Dr M. Grazia Francesconi M.G.Francesconi@hull.ac.uk
Sara Pescetelli firstname.lastname@example.org.
Aldo Di Carlo email@example.com
Mohammed Al-Abri firstname.lastname@example.org
Sergey Dobretsov email@example.com
Mariana Braic firstname.lastname@example.org.
Leslie F Petrik email@example.com.
The application of highly active nano catalysts in advanced oxidation processes (AOPs) improves the production of non-selective hydroxyl radicals and co-oxidants for complete remediation of polluted water. This study focused on the synthesis and characterisation of a highly active visible light C-N-co-doped TiO2 nano catalyst that we prepared via the sol-gel method and pyrolysed at 350 °C for 105 min in an inert atmosphere to prevent combustion of carbon moieties. Then we prolonged the pyrolysis holding time to 120 and 135 min and studied the effect of these changes on the crystal structure, particle size and morphology, electronic properties and photocatalytic performance. The physico-chemical characterisation proved that alteration of pyrolysis holding time allows control of the amount of carbon in the TiO2 catalyst causing variations in the band gap, particle size and morphology and induced changes in electronic Catalysts 2020, 10, 847 2 of 27 properties. The C-N-TiO2 nano composites were active under both visible and UV light. Their improved activity was ascribed to a low electron-hole pair recombination rate that enhanced the generation of OH. and related oxidants for total deactivation of O.II dye. This study shows that subtle differences in catalyst preparation conditions affect its physico-chemical properties and catalytic efficiency under solar and UV light.
Mouele, E. S. M., Dinu, M., Cummings, F., Fatoba, O. O., Myint, M. T. Z., Kyaw, H. H., …Petrik, L. F. (2020). Effect of calcination time on the physicochemical properties and photocatalytic performance of carbon and nitrogen co-doped tio2 nanoparticles. Catalysts, 10(8), 1-27. https://doi.org/10.3390/catal10080847
|Journal Article Type||Article|
|Acceptance Date||Jul 10, 2020|
|Online Publication Date||Jul 28, 2020|
|Publication Date||Aug 1, 2020|
|Deposit Date||Jul 29, 2020|
|Publicly Available Date||Aug 6, 2020|
|Peer Reviewed||Peer Reviewed|
|Keywords||nano-photo catalysts; pyrolysis; holding time; band gap; crystal structure; particle size; photocatalytic activity; recombination rate|
Publisher Licence URL
© 2020 by the authors
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