Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels

To solve the environmental pollution caused by automobile exhaust in a tunnel, this study has developed a modified nano-TiO2 based on Fe3+ and Ce3+. The modified nano-TiO2 is prepared by the sol–gel method, and the modification adopts Fe3+ single-doping, Ce3+ sing-doping, and co-doping. The properti...

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Autores principales:	Luo Yin, Wu Jianmin, Qin Zhong, Zhang Hengcong
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	exhaust degradation nano-tio2 metal ion modification sol–gel method degradation efficiency Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/b26f3595b3b743dbaa9998ec843d96bd
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spelling	oai:doaj.org-article:b26f3595b3b743dbaa9998ec843d96bd2021-12-05T14:10:50ZFe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels2191-955010.1515/gps-2021-0063https://doaj.org/article/b26f3595b3b743dbaa9998ec843d96bd2021-10-01T00:00:00Zhttps://doi.org/10.1515/gps-2021-0063https://doaj.org/toc/2191-9550To solve the environmental pollution caused by automobile exhaust in a tunnel, this study has developed a modified nano-TiO2 based on Fe3+ and Ce3+. The modified nano-TiO2 is prepared by the sol–gel method, and the modification adopts Fe3+ single-doping, Ce3+ sing-doping, and co-doping. The properties were also characterized by X-ray diffraction analysis, UV-vis diffuse reflectance analysis, fluorescence spectroscopy analysis, specific surface area analysis, and paramagnetic resonance popper analysis. The analyses showed that the doping of ions would change the energy band structure of nano-TiO2 and produce crystal defects, thus improving the photocatalytic activity. Then, a self-fabricated exhaust gas degradation device was used to carry out the exhaust gas degradation experiments. The results showed that the modification improves the catalytic efficiency of nano-TiO2, and Fe3+, Ce3+ co-doping > Ce3+ single-doping > Fe3+ single-doping > pure TiO2. At the dosage of 0.5%, the maximum degradation efficiencies of NO and CO before compensation are 53.85% and 16.39%, respectively, and the maximum degradation rates are 1.04 and 0.93 ppm·min−1. After compensation, the maximum degradation efficiencies of NO and CO are 20.14% and 6.04%, respectively. The maximum degradation rate is 0.40 and 0.41 ppm·min−1, respectively.Luo YinWu JianminQin ZhongZhang HengcongDe Gruyterarticleexhaust degradationnano-tio2 metal ion modificationsol–gel methoddegradation efficiencyChemistryQD1-999ENGreen Processing and Synthesis, Vol 10, Iss 1, Pp 628-643 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	exhaust degradation nano-tio2 metal ion modification sol–gel method degradation efficiency Chemistry QD1-999
spellingShingle	exhaust degradation nano-tio2 metal ion modification sol–gel method degradation efficiency Chemistry QD1-999 Luo Yin Wu Jianmin Qin Zhong Zhang Hengcong Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels
description	To solve the environmental pollution caused by automobile exhaust in a tunnel, this study has developed a modified nano-TiO2 based on Fe3+ and Ce3+. The modified nano-TiO2 is prepared by the sol–gel method, and the modification adopts Fe3+ single-doping, Ce3+ sing-doping, and co-doping. The properties were also characterized by X-ray diffraction analysis, UV-vis diffuse reflectance analysis, fluorescence spectroscopy analysis, specific surface area analysis, and paramagnetic resonance popper analysis. The analyses showed that the doping of ions would change the energy band structure of nano-TiO2 and produce crystal defects, thus improving the photocatalytic activity. Then, a self-fabricated exhaust gas degradation device was used to carry out the exhaust gas degradation experiments. The results showed that the modification improves the catalytic efficiency of nano-TiO2, and Fe3+, Ce3+ co-doping > Ce3+ single-doping > Fe3+ single-doping > pure TiO2. At the dosage of 0.5%, the maximum degradation efficiencies of NO and CO before compensation are 53.85% and 16.39%, respectively, and the maximum degradation rates are 1.04 and 0.93 ppm·min−1. After compensation, the maximum degradation efficiencies of NO and CO are 20.14% and 6.04%, respectively. The maximum degradation rate is 0.40 and 0.41 ppm·min−1, respectively.
format	article
author	Luo Yin Wu Jianmin Qin Zhong Zhang Hengcong
author_facet	Luo Yin Wu Jianmin Qin Zhong Zhang Hengcong
author_sort	Luo Yin
title	Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels
title_short	Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels
title_full	Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels
title_fullStr	Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels
title_full_unstemmed	Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels
title_sort	fe3+ and ce3+ modified nano-tio2 for degradation of exhaust gas in tunnels
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/b26f3595b3b743dbaa9998ec843d96bd
work_keys_str_mv	AT luoyin fe3andce3modifiednanotio2fordegradationofexhaustgasintunnels AT wujianmin fe3andce3modifiednanotio2fordegradationofexhaustgasintunnels AT qinzhong fe3andce3modifiednanotio2fordegradationofexhaustgasintunnels AT zhanghengcong fe3andce3modifiednanotio2fordegradationofexhaustgasintunnels
_version_	1718371684255268864

Fe3+ and Ce3+ modified nano-TiO2 for degradation of exhaust gas in tunnels

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