TiO2-coated glass hollow fiber membranes: preparation and application for photocatalytic methylene blue removal |
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| Affiliation: | 1. State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300380, PR China;2. Fiber Materials Research Center, Shanghai university of Engineering Science, Shanghai, 201620, PR China;1. Key Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China;2. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China;1. Graduate School of Mechanical Engineering, Pusan National University, Geumjeong-gu, Busan, 46241, South Korea;2. LG Electronics, Seongsan-gu, Changwon, 51554, South Korea;3. BK21 Plus, School of Mechanical Engineering, Pusan National University, Geumjeong-gu, Busan, 46241, South Korea;4. School of Mechanical Engineering and ERC/NSDM, Pusan National University, Geumjeong-gu, Busan, 46241, South Korea;1. Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand;2. Dental Biomaterials University of Florida, Gainesville, FL 32611, United States;3. Materials Science and Engineering Department, University of Florida, Gainesville, FL 32611, United States;1. Materials Science and Engineering Department, Missouri University of Science and Technology, Rolla, MO 65409, USA;2. UES, Inc. Dayton, Dayton, OH 45432, USA;1. Institute of Aerospace Materials and Technology, Beijing 100076, China;2. Capital Aerospace Machinery Corporation Limited, Beijing 100076, China |
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| Abstract: | A glass hollow fiber membrane coated with TiO2 was successfully synthesized by dip-coating and calcination. In addition, the effects of the calcination temperature, number of coating layers, and treatment method on the photocatalytic removal of methylene blue from wastewater by the membrane were investigated. The results showed that the TiO2-coated membrane calcined at 550 °C was uniform. It showed good photocatalytic and anti-fouling properties. As compared to the basement membrane, the TiO2-coated membrane showed significantly improved photocatalytic removal of methylene blue. It showed a methylene blue removal degree as high as 97.2% and could be recycled multiple times by a simple treatment. The methylene blue removal degree of the membrane remained 92.3-93.6% after five recycling operations. Therefore, the membrane prepared via the simple method proposed in this study could be used as an efficient photocatalyst to remove methylene blue from wastewater. |
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| Keywords: | glass hollow fiber membrane photocatalysis methylene blue reusability |
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