Rational designed novel TiO2-x/Bi6Cr2O15/Bi quantum dots: Bi-based plasmonic photocatalysts for boosted detoxifying organic and inorganic wastewaters under visible light
Salmanzadeh-Jamadi Z. Habibi-Yangjeh A. Khataee A. Kudaibergenov N.
October 2023Elsevier B.V.
Surfaces and Interfaces
2023#41
We combined brown TiO2-x with Bi6Cr2O15 and Bi using a facile procedure to fabricate Bi-based plasmonic TiO2-x/Bi6Cr2O15/Bi photocatalysts for detoxifying organic and inorganic wastewaters upon visible light. The TEM and HRTEM analyses provided strong evidence for the construction of quantum dots of the photocatalyst with diameter of almost 8.2 nm and intimate contact among TiO2-x, Bi6Cr2O15, and Bi components. The TiO2-x/Bi6Cr2O15/Bi nanocomposites exhibited boosted activity in the degradation of tetracycline (TC), azithromycin (Azi), rhodamine B (RhB), methylene blue (MB), and photoreduction of Cr (VI) pollutants, and the performance was 12.9, 1.67, 10.4, 3.50, and 6.91-folds greater than TiO2-x, and 19.1, 1.60, 3.44, 2.88, and 1.90-times higher than Bi6Cr2O15 photocatalysts, respectively. In particular, h+ and •OH species were identified as the key species involved in the TC degradation reaction. The electrochemical analyses, including EIS, Bode plots and photocurrent density, and PL spectroscopy exhibited efficacious segregation and transportation of charge carriers within the ternary photocatalyst. Finally, the biocompatibility of TC-treated solution over the TiO2-x/Bi6Cr2O15/Bi photocatalyst was verified by the growth of lentil seeds.
Biocompatibility , Brown TiO2-x , Metallic Bi , Plasmonic photocatalyst , Quantum dots , TiO2-x/Bi6Cr2O15/Bi nanocomposites
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Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
Department of Environmental Engineering, Gebze Technical University, Gebze, 41400, Turkey
Department of Materials Science and Nanotechnology Engineering, Faculty of Engineering, Near East University, Mersin 10, Nicosia, 99138, Turkey
Department of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
Department of Chemistry
Research Laboratory of Advanced Water and Wastewater Treatment Processes
Department of Environmental Engineering
Department of Materials Science and Nanotechnology Engineering
Department of Chemistry and Chemical Technology
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