Visible light activated TiO₂/microcrystalline cellulose nanocatalyst to destroy organic contaminants in water

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• 作者：Jurate Virkutyte^a ; ^{Virkutyte.Jurate@epa.gov} ; Veeriah Jegatheesan^b ; ^{jega.j@deakin.edu.au} ; Rajender S. Varma^c ; ^{Varma.Rajender@epa.gov}
• 关键词：TiO2 ; Microcrystalline cellulose ; Catalytic adsorption ; Visible light
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：June, 2012
• 卷：113
• 期：Complete
• 页码：288-293
• 文件大小：362 K

摘要

Hybrid TiO₂/microcrystalline cellulose (MC) nanophotocatalyst was prepared in situ by a facile and simple synthesis utilizing benign precursors such as MC and TiCl₄. The as-prepared nanocomposite was characterized by XRD, XPS, BET surface area analyzer, UV-vis DRS and TGA. Surface morphology was assessed by the means of SEM and HR-TEM. Statistics-based factorial design (FD) was adopted to investigate the effect of precursors concentrations and therefore to optimize the nanocomposite synthesis through catalytic adsorption of methylene blue (MB) from aqueous solutions. The results indicated that TiO₂/MC nanocomposites were photocatalytically active in diminishing 40-90%of MB in 4 h.