| 细菌纤维素负载稀土掺杂二氧化钛复合膜的制备和光催化性能 |
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| 引用本文： | 张秀菊,陈文彬,林志丹,姚佳. 细菌纤维素负载稀土掺杂二氧化钛复合膜的制备和光催化性能[J]. 材料研究学报, 2010, 24(5) |
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| 作者姓名： | 张秀菊 陈文彬 林志丹 姚佳 |
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| 作者单位： | 暨南大学理工学院材料系,广州,510632;暨南大学理工学院材料系,广州,510632;暨南大学理工学院材料系,广州,510632;暨南大学理工学院材料系,广州,510632 |
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| 基金项目： | 广东省科技攻关项目2010B080701060; 广东省自然科学基金项目8451063201000041资助~~ |
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| 摘 要： | 以细菌纤维素(BC)为载体,用溶胶-凝胶法原位生成稀土镧和铈元素(La,Ce)掺杂的二氧化钛复合膜,以甲基橙为目标降解物,考察了复合膜的光催化活性。结果表明:稀土元素已引入TiO_2/BC复合膜中;掺杂TiO_2的晶型为锐钛矿型;掺杂稀土的TiO_2/BC复合膜的光催化活性比未掺杂的有较大提高;铈掺杂的TiO_2/BC复合膜的光催化性能优于镧掺杂的;Ce~(4+)掺杂的最适浓度为2 mmol/L,而La~(3+)掺杂的最适浓度为5 mmol/L;稀土掺杂的TiO_2/BC复合膜对甲基橙溶液重复降解5次的降解率仍高于70%。
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| 关 键 词： | 复合材料 细菌纤维素 稀土 二氧化钛 光催化 甲基橙 |
Preparation and Photocatalysis Performances of Bacterial Cellulose/TiO2 Composite Membranes Doped by Rare Earth Elements |
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| ZHANG Xiuju CHEN Wenbin LIN Zhidan YAO Jia. Preparation and Photocatalysis Performances of Bacterial Cellulose/TiO2 Composite Membranes Doped by Rare Earth Elements[J]. Chinese Journal of Materials Research, 2010, 24(5) |
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| Authors: | ZHANG Xiuju CHEN Wenbin LIN Zhidan YAO Jia |
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| Affiliation: | ZHANG Xiuju~(**) CHEN Wenbin LIN Zhidan YAO Jia (College of Science , Engineering,Jinan University,Guangzhou 510632) |
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| Abstract: | The composite membrane of TiO_2/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 TiO_2/BC membrane;the resulting titanium dioxide is anatase type.Compared with a pure TiO_2/BC membrane,photocatalysis efficiency of the doped one is si... |
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| Keywords: | composites bacterial cellulose rare earth titanium dioxide photocatalysis methylene orange |
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