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Vanadium and Nitrogen Co-Doped Titanium Dioxide (TiO2) with Enhanced Photocatalytic Performance: Potential in Wastewater Treatment.
J Nanosci Nanotechnol; 20(2): 741-751, 2020 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-31383069
ABSTRACT
The vanadium (V) and nitrogen (N) dopants on TiO2 demonstrated superior photocatalytic performance for the degradation of methylene blue (MB) dye under visible light. The vanadium, V, N-co-doped TiO2 was synthesized by a modified sol-gel method. It revealed that V and N codoping had a significant effect on the band gap (Eg) of TiO2, where the pristine TiO2 possessed a wide band gap (3.18 eV) compared to V-doped TiO2 (2.89 eV) and N-doped TiO2 (2.87 eV) while the V, N-co-doped TiO2 depicted the narrowest band gap (2.65 eV). The greatly increased specific surface area for the V, N-co-doped TiO2 (103.87 m²/g) as compared to P25 TiO2 (51.68 m²/g) also contributed to the major improvement in the MB dye degradation efficiency (0.055 min-1). The V, N-co-doped TiO2 exhibit rapid photocatalytic activity for the degradation of MB with almost 99% of degradation in 120 minutes.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: J Nanosci Nanotechnol Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Malásia