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Vanadium and Nitrogen Co-Doped Titanium Dioxide (TiO2) with Enhanced Photocatalytic Performance: Potential in Wastewater Treatment

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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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Keywords: Co-Doped; Methylene Blue; Nitrogen; Photocatalyst; Titanium Dioxide; Vanadium

Document Type: Research Article

Affiliations: Nanotechnology & Catalysis Research Centre (NANOCAT), Institute for Advanced Studies (IAS), University of Malaya, 50603 Kuala Lumpur, Malaysia

Publication date: February 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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