Hydrothermal Synthesis and Characterization of Sodium Bismuth Titanatefor Photocatalytic Applications

Mesrar, Mohammed; Elbasset, Abdelhalim; El Mrabet, Imane; Zaitan, Hicham; Abdi, Farid; Echatoui, Nor-Said; Lamcharfi, Taj-dine

doi:10.12911/22998993/169458

Artykuł - szczegóły

Tytuł artykułu

Hydrothermal Synthesis and Characterization of Sodium Bismuth Titanatefor Photocatalytic Applications

Autorzy

Mesrar Mohammed , Elbasset Abdelhalim , El Mrabet Imane , Zaitan Hicham , Abdi Farid , Echatoui Nor-Said , Lamcharfi Taj-dine

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DOI

10.12911/22998993/169458

Warianty tytułu

Języki publikacji

Abstrakty

Sodium bismuth titanate (Na_0.5Bi_0.5TiO₃, abbreviated NBT) ceramics underwent concurrent successful synthesis on the basis of the hydrothermal method. A selected low-temperature process of thermal treatment was conducted to obtain a highly dense morphology, produced from high purity carbonates and oxides serving as initial precursors. The presence of well-crystallized NBT in the rhombohedral phase was also found at hydrothermal temperatures of 200 °C. X-ray diffraction (DRX), Raman spectroscopy, Infrared spectroscopy (IR), and Scanning electron microscopy (SEM) analysis enabled to verify the structure, phase, morphology, and composition of the used samples. NBT ceramics exhibit features specific to relaxor ferroelectrics, with a diffusion exponent γ of up to 1.5 to promote their applications in micro-electromechanical and energy harvesting systems. The photocatalytic behaviors of NBT powders have been assessed by means of the degradation of methylene blue (MB) through UV-light irradiation. The samples prepared with precursors having a Na/Bi ratio of 0.5/0.5 showed the highest methylene blue (MB) photodegradation rate of 100% under UV irradiation for 420 minutes. In addition, photocatalytic activities under different masses and pH values were discussed for the first time. In addition, the photocatalyst has excellent stability, due to the larger particle size and surface area, which opens up new possibilities for the design of multi-component photocatalysts for future applications. The photocatalytic mechanism for the degradation of organic dyes (MB) has been principally assigned to the photoreduction process caused by superoxide radical anions (^•O²⁻) and hydroxyl radicals (^•OH).

Słowa kluczowe

hydrothermal method methylene blue Na0.5Bi0.5TiO3 photocatalyst raman spectroscopy

Wydawca

Polskie Towarzystwo Inżynierii Ekologicznej
Lublin University of Technology

Czasopismo

Journal of Ecological Engineering

Rocznik

2023

Tom

Vol. 24, nr 10

Strony

185--197

Opis fizyczny

Bibliogr. 61 poz., rys., tab.

Twórcy

autor

Mesrar Mohammed

mohammed.mesrar@usmba.ac.ma

Signals, Systems and Components Laboratory (LSSC), Faculty of Sciences and Technologies of Fez, Sidi Mohamed Ben Abdellah University, B.P. 2022, Imouzzer Road, Fez, Morocco

https://orcid.org/0000-0003-1842-2132

autor

Elbasset Abdelhalim

Signals, Systems and Components Laboratory (LSSC), Faculty of Sciences and Technologies of Fez, Sidi Mohamed Ben Abdellah University, B.P. 2022, Imouzzer Road, Fez, Morocco

autor

El Mrabet Imane

Department of Physics-Chemistry, Polydisciplinary Faculty of Ouarzazate, University of Ibn Zohr, Ouarzazate, Morocco

autor

Zaitan Hicham

Laboratory of Processes, Materials and Environment (LPME), Faculty of Sciences and Technologies of Fez, Sidi Mohamed Ben Abdellah University, B.P. 2022, Imouzzer Road, Fez, Morocco

autor

Abdi Farid

Signals, Systems and Components Laboratory (LSSC), Faculty of Sciences and Technologies of Fez, Sidi Mohamed Ben Abdellah University, B.P. 2022, Imouzzer Road, Fez, Morocco

autor

Echatoui Nor-Said

Signals, Systems and Components Laboratory (LSSC), Faculty of Sciences and Technologies of Fez, Sidi Mohamed Ben Abdellah University, B.P. 2022, Imouzzer Road, Fez, Morocco

autor

Lamcharfi Taj-dine

Signals, Systems and Components Laboratory (LSSC), Faculty of Sciences and Technologies of Fez, Sidi Mohamed Ben Abdellah University, B.P. 2022, Imouzzer Road, Fez, Morocco

Bibliografia

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