Preparation and Characterization of Nanostructured Titania-coated Silica Microsphere Membranes with Simultaneous Photo-catalytic and Separation Applications for Water Treatment
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMSEI-17-1_004
تاریخ نمایه سازی: 1 اسفند 1401
Abstract:
In this research, the nanostructured titania-coated silica microsphere (NTCSM) membrane consisting of titania-silica core-shell particles on α–alumina substrate was prepared by dip-coating method. The silica microspheres were synthesized by the Stöber method, and the nanostructured titania shell was obtained from a polymeric sol. Then, the prepared core-shell particles were deposited on alumina substrates. The samples were characterized by DLS, TG-DTA, XRD, FTIR and SEM. The photo-catalytic activity of the NTCSM membranes was evaluated using photo-degradation of methyl orange solution by UV–visible spectrophotometer. Also, physical separation capability was investigated by filtration experiment based on methyl orange removal from aqueous solution using a membrane setup. The mean particle size distribution of silica microspheres was determined to be about ۶۵۰ nm that by deposition of titania nano-particles increased up to about ۸۰۰ nm. After ۶۰ min UV-irradiation, the dye removal efficiency was determined to be ۸۰% by the membrane. By coupling separation process with photo-catalytic technique, the removal efficiency was improved up to ۹۷%. Thus, the NTCSM membranes showed simultaneous photo-degradation and separation capabilities for dye removal from water.
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Authors
V. Tajer Kajinebaf
Department of Materials Engineering, Takestan Branch, Islamic Azad University, Takestan, Iran
M. Zarrin Khame-Forosh
School of Metallurgy and Materials Engineering, Iran University of Science & Technology, Tehran, Iran
H. Sarpoolaky
School of Metallurgy and Materials Engineering, Iran University of Science & Technology, Tehran, Iran
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