Interstitial N-Doped TiO2 for Photocatalytic Methylene Blue Degradation under Visible Light Irradiation
Li, Dezheng (Liaoning University of Technology (Xina))
Calebe, Vilanculo Clesio (Liaoning University of Technology (Xina))
Li, Yuqiao (Liaoning University of Technology (Xina))
Liu, Huimin (Liaoning University of Technology (Xina))
Lei, Yiming (Universitat Autònoma de Barcelona. Departament de Química)

Data:	2024
Resum:	Photocatalysis is a promising method for methylene blue (MB) degradation due to its effectiveness and environmental compatibility. Among the photocatalysts, titanium dioxide (TiO) has been widely used for MB degradation due to its exceptional photocatalytic activity. However, the wide bandgap limits the degradation efficiency of TiO under visible light. Here, an interstitial nitrogen-doped TiO (5%N/TiO) used thiourea as the N source was fabricated for visible light-derived MB degradation. The 5%N/TiO exhibited an extended absorption range of visible light. Moreover, photoelectrochemical measurements showed an improvement in the photocurrent response and charge transfer behavior on N/TiO. Thus, 5%N/TiO had enhanced photocatalytic activity compared with pristine TiO and substitutive N-doped TiO (5%N/TiO). The accelerated photocatalytic MB degradation process on N/TiO could be mainly attributed to the interstitial N doping, which caused the appearance of new energy states and extended optical properties. Through comparing the impact of interstitial and substitutive in TiO activity, our work proposes a suitable form of element doping to enhance the optical properties and photocatalytic activity of TiO and even other semiconductors, providing guidance for future work.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	TiO2 ; Nitrogen doping ; Photocatalytic activity ; Methylene bule degradation ; Visible light
Publicat a:	Catalysts, Vol. 14, Issue 10 (October 2024) , art. 681, ISSN 2073-4344

DOI: 10.3390/catal14100681

14 p, 6.6 MB

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