Improved photocatalytic oxidation of ciprofloxacin by NiS-coupled WO3 nanorods synthesized by solvothermal method under visible light |
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| Affiliation: | 1. Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia;2. Nanomaterials and Nanotechnology Department, Advanced Materials Institute, Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, 11421, Cairo, Egypt;1. Yantai University, Yantai, 264005, Shandong, China;2. Department of Physics and Astronomy, KU Leuven, 3001, Leuven, Belgium;3. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China;4. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China;5. School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China;1. Department of Chemistry, Siddhartha University, Kapilvastu, Siddharth Nagar, 272202, India;2. Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, 515134, Andhra Pradesh, India;3. Department of Chemistry, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, 518501 Andhra Pradesh, India;4. College of Science, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia;5. Department of Chemistry, L.N.T. College, B.R.A. Bihar University, Muzaffarpur, 842002, Bihar, India;6. Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, 221005, India;7. Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India;8. Department of Materials Science and Engineering, Institute of Green Manufacturing Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea;9. Department of Chemistry, University of Ulsan, 93 Deahak-ro, Nam-Gu, Ulsan, 44610, Republic of Korea;1. School of Metallurgy, Northeastern University, NO.3-11, Wenhua Road, Heping District, Shenyang, 110819, China;2. State Key Laboratory of Rolling and Automation, Northeastern University, NO.3-11, Wenhua Road, Heping District, Shenyang, 110819, China;3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;1. Faculty of Dentistry, University of Toronto, 124 Edward St, Toronto, ON, M5G1G6, Canada;2. Department of Comprehensive Dentistry, School of Dentistry, University of Louisville, 501 S. Preston St., Louisville, KY, 40202, United States;1. School of Mechanical Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, PR China;2. School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning, 110819, PR China;3. Institute of Advanced Structure Technology, Beijing Institute of Technology, Haidian District, Beijing, 100081, PR China |
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| Abstract: | Photocatalytic oxidation of antibiotics over semiconducting nanostructured photocatalysts is stared as a capable procedure for preventing possible antimicrobial resistance. Accordingly, plenteous research suggestions for photocatalyst design and trials are investigated to realize this approach. Moreover, photostability and reusability are important factors for sustainable utilization. Herein, tungsten trioxide (WO3) nanorods were grown by a solvothermal route in the presence of double soft templates, followed by incorporating nickel sulfide (NiS) nanoparticles on their surface to have NiS/WO3 nanocomposite photocatalysts. These formed heterojunctions were analyzed via several tools. The NiS incorporation has widened the visible-light harvesting owing to the bandgap reduction from 2.82 eV for pure WO3 to 2.40 eV at 9 wt% of NiS. The mesoporous surface has not been meaningfully impacted by incorporating NiS with a value of the surface area between 163 and 189 m2 g-1. The photooxidation of ciprofloxacin (CiP) over the formed photocatalysts were done under visible-light irradiation. The 2.0 g L-1 of 9% NiS/WO3 has completely oxidized 30.2 μmol CiP at a 1.38 μmol min−1. This progressive NiS/WO3 p-n heterojunction has also implied reusability for five repetitive cycles. This excellent photoactivity is ascribed to the charge transfer by the S-scheme mechanism and the synergistic upshot of a particular NiS expanse. |
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| Keywords: | Photocatalysis Antibiotic oxidation Solvothermal Heterojunction Environmental remediation Water |
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