Synergistic effects of rare-earth ions (Ho, Yb) doping on the photo-catalytic efficacy of V 2 O 5 for removal of pollutants from industrial waste water.

Autor: Uddin MM; Department of Physics, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh., Hossain MZ; Department of Physics, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh., Kabir MH; Department of Physics, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh.; Department of Materials Science & Engineering, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh., Ghosh S; Department of Physics, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India., Haque MH; Department of Physics, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh., Hossain MM; Department of Physics, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh., Ali MA; Department of Physics, Chittagong University of Engineering and Technology (CUET), Chattogram, 4349, Bangladesh., Akhtaruzzaman M; Department of Chemistry, Faculty of Science, The Islamic University of Madinah, Saudi Arabia., Alanazi AM; Department of Chemistry, Faculty of Science, The Islamic University of Madinah, Saudi Arabia., Mondal S; Department of Physics, Sidho-Kanho-Birsha University, Purulia, 723104, India., Chowdhury J; Department of Physics, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India., Karmakar D; Department of Physics, University of Calcutta, 92 A P C Road, Kolkata, 700009, West Bengal, India., Jana D; Department of Physics, University of Calcutta, 92 A P C Road, Kolkata, 700009, West Bengal, India.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2024 Sep 10; Vol. 10 (18), pp. e37689. Date of Electronic Publication: 2024 Sep 10 (Print Publication: 2024).
DOI: 10.1016/j.heliyon.2024.e37689
Abstrakt: The co-doping of vanadium pentoxide (V 2 O 5 ) with rare-earth (RE) elements, namely 1.5 % holmium (Ho) and 1.5 % ytterbium (Yb) has been conducted using an eco-friendly, straightforward hydrothermal approach to assess the combined effects on structural, optical, and photocatalytic properties. The application of the density functional theory (DFT) approach effectively examined the impact of RE ions on the photocatalytic efficiency of co-doped V 2 O 5 . The stable orthorhombic crystal structure of co-doped V 2 O 5 has been confirmed using DFT and X-ray diffraction without a secondary phase. It appears that homogeneous nucleation occurs while heterogeneous nucleation slows down in co-doped samples, as evidenced by the larger crystallite sizes in co-doped samples compared to doped ones. It means a result, the co-doped samples exhibit photodegrades more quickly and have a higher rate constant than the doped samples. This is because they have less dislocation density (4.26 × 10 -3  nm -2 ) and internal micro-strain (4.93 × 10 -3 ). The bandgap and degradation efficiency are determined by the UV-vis spectroscopy and found to be 2.33 eV and 95 %, respectively, at the optimal pH of 7 in the visible range. The co-doped sample has a rate constant of 24 × 10 -3 min -1 , which is the highest in the RE-doped V 2 O 5 system. This is a good reason to think of co-doped V 2 O 5 as a possible catalyst.
Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Prof. Dr. Md Mohi Uddin reports writing assistance was provided by Department of Physics, University of Calcutta, West Bengal, India. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 Published by Elsevier Ltd.)
Databáze: MEDLINE
Externí odkaz: