Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications
Ashir Mehmood Awan,
Awais Khalid,
Pervaiz Ahmad,
Abdulrahman I. Alharthi,
Muhammad Farooq,
Abdulhameed Khan,
Mayeen Uddin Khandaker,
Saad Aldawood,
Mshari A. Alotaibi,
Ahmed A. El-Mansi,
Mamdouh Basheir Eldesoqui,
Amal F. Dawood,
Samer H. Zyoud
Affiliations
Ashir Mehmood Awan
Department of Physics, Hazara University Mansehra, Khyber Pakhtunkhwa, 21300, Pakistan
Awais Khalid
Department of Physics, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj, 11942, Saudi Arabia; Corresponding author. Department of Physics, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj, 11942, Saudi Arabia.
Pervaiz Ahmad
Department of Physics, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj, 11942, Saudi Arabia; Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
Abdulrahman I. Alharthi
Department of Chemistry, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj, 11942, Saudi Arabia
Muhammad Farooq
Department of Physics, Hazara University Mansehra, Khyber Pakhtunkhwa, 21300, Pakistan
Abdulhameed Khan
Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
Mayeen Uddin Khandaker
Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Selangor, Malaysia; Faculty of Graduate Studies, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka, 1216, Bangladesh
Saad Aldawood
Department of Physics and Astronomy, College of Science, P.O. BOX 2455, King Saud University, Riyadh, 11451, Saudi Arabia
Mshari A. Alotaibi
Department of Chemistry, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj, 11942, Saudi Arabia
Ahmed A. El-Mansi
Biology Department, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia
Mamdouh Basheir Eldesoqui
Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, P.O. Box 71666, Riyadh, 11597, Saudi Arabia; Department of Anatomy and Embryology, Faculty of Medicine, Mansoura University, P.O. Box 35516, Mansoura, Egypt
Amal F. Dawood
Department of Basic Medical Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
Samer H. Zyoud
Department of Mathematics and Sciences, Ajman University, P.O. Box 346, Ajman, United Arab Emirates; Center of Medical and Bio-Allied Health Sciences Research, Ajman University, P.O. Box 346, Ajman, United Arab Emirates
Pure and manganese-doped titanium dioxide nanoparticles (MnTiO2-NPs) were synthesized by the defect-oriented hydrothermal approach. The synthesized material was then characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX), and UV–visible spectroscopy (UV–Vis). The agar well diffusion method assessed the antibacterial efficiency of TiO2 and MnTiO2-NPs against E. coli and S. aureus. Zone of inhibition (ZOI) formed by pure TiO2 was observed as 12 mm and 11.5 mm against E. coli and S. aureus, while for MnTiO2-NPs it was observed as 19 mm (E. coli) and 21 mm (S. aureus). The concentration of synthesized nanoparticles (10 mg/ml, and 20 mg/ml) was used for antibacterial studies. The efficacy of the pure and MnTiO2-NPs as an active photocatalyst for the degradation of methylene blue (MB) dye was also assessed using a UV light. It was observed that the photodegradation efficiency of 1 g of MnTiO2-NPs was higher than the same amount of pure TiO2. The results suggest that the photocatalyst concentration directly impacts the photodegradation of MB dye. The pH value was found to influence the photodegradation of MB dye at higher pH values. Based on the obtained results, MnTiO2-NPs were observed as a promising agent for microbial resistance and water remediation.
