Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/118374
Title: Mesoporous Nanocomposites TiO2/MCM-41 Synthesized from Fly Ash for Photo-catalysis Degradation of Reverse Osmosis Concentrate
Authors: WU YE
Keywords: Photo-catalysis TiO2/MCM-41 Fly ash ROC degradation
Issue Date: 21-Aug-2014
Citation: WU YE (2014-08-21). Mesoporous Nanocomposites TiO2/MCM-41 Synthesized from Fly Ash for Photo-catalysis Degradation of Reverse Osmosis Concentrate. ScholarBank@NUS Repository.
Abstract: In this study, mesoporous F-MCM-41 materials synthesized from fly ash was used as the carrier of TiO2 to reduce the cost. F-MCM-41 with good mesoporous structure and high surface area (952 SBET, m2g-1) was synthesized successfully from fly ash. Compared with alkali fusion method, NaOH solution method was proved to be a greener and more efficient way to extract Si from fly ash. Besides, different types of TiO2/MCM-41 catalysts were synthesized through hydro-thermal method. TiO2/F-MCM-41 synthesized from inorganic silica source tended to have more mesoporous crystalline structure than TiO2/P-MCM-41 synthesized from organic silica sources. However catalyst consisting of mixed TiO2 with MCM-41 directly achieved better ROC removal efficiency than synthesized TiO2/MCM-41 regardless of the purity and silica sources. Our results show that reusing fly ash as resource to facilitate ROC degradation is environmental friendly and quite promising. However, more research needs to be done to improve the efficiency.
URI: http://scholarbank.nus.edu.sg/handle/10635/118374
Appears in Collections:Master's Theses (Open)

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