Effect of Calcination Time on the Physicochemical Properties and Photocatalytic Performance of Carbon and Nitrogen Co-Doped TiO2 Nanoparticles; Catalysts; Vol. 10, iss. 8

Effect of Calcination Time on the Physicochemical Properties and Photocatalytic Performance of Carbon and Nitrogen Co-Doped TiO2 Nanoparticles; Catalysts; Vol. 10, iss. 8

Bibliographic Details
Parent link:Catalysts
Vol. 10, iss. 8.— 2020.— [847, 27 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий Научно-исследовательский центр "Физическое материаловедение и композитные материалы"
Other Authors: Massima M. E. S. Mouele Emile Salomon, Dinu M. Mihaela, Cummings F. Franscious, Fatoba O. O. Ojo, Zar Myint M. T. Myo Tay, Kyaw H. H. Htet Htet, Parau A. C. Anca Constantina, Vladesku A. Alina
Summary:Title screen
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 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.
Language:English
Published: 2020
Subjects:
электронный ресурс
труды учёных ТПУ
nano-photo catalysts
pyrolysis
holding time
band gap
crystal structure
particle size
photocatalytic activity
recombination rate
фотокатализаторы
пиролиз
фотокаталитическая активность
Online Access:https://doi.org/10.3390/catal10080847
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664427

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