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| Preparation and Photocatalysis Performances of Bacterial Cellulose/TiO2 Composite Membranes Doped by Rare Earth Elements |
| ZHANG Xiuju, CHEN Wenbin, LIN Zhidan, YAO Jia |
| Preparation and Photocatalysis Performances of Bacterial Cellulose/TiO2 Composite Membranes Doped by Rare Earth Elements |
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Cite this article:
ZHANG Xiuju CHEN Wenbin LIN Zhidan YAO Jia. Preparation and Photocatalysis Performances of Bacterial Cellulose/TiO2 Composite Membranes Doped by Rare Earth Elements. Chin J Mater Res, 2010, 24(5): 540-546.
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Abstract The composite membrane of TiO2/BC(bacterial cellulose) doped with rare earth elements was prepared by a sol-gel method using tetraisopropyl titanate as starting materials and BC as the support. Photocatalysis performances of the membrane were estimated by using methyl orange as a degradation agent. The results show that rare earth ions are incorporated into TiO2/BC membrane; the resulting titanium dioxide is anatase type. Compared with a pure TiO2/BC membrane, photocatalysis efficiency of the doped one is significantly enhanced. The degradation rate of methyl orange solution for the composite membrane doped with Ce4+ is higher than that of membrane doped with La3+. The optimal dosage of Ce4+ is 2 mmol/L, while the most suitable concentration of La3+ is 5 mmol/L. The degradation rate of methyl orange solution is above 70% after degradation for five times.
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Received: 07 July 2010
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| Fund: Supported by Guangdong Scientific and Technological Project No.2010B080701060 and Guangdong Natural Science Fund No.8451063201000041. |
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