TiO2 Immobilized in Cellulose Matrix for Photocatalytic Degradation of Phenol under Weak UV Light Irradiation
TiO2 Immobilized in Cellulose Matrix for Photocatalytic Degradation of Phenol under Weak UV Light Irradiation
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DOI：
10.1021/jp1005617
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发表时间：
2010-04
影响因子：
3.7
通讯作者：
Jian Zeng;Shilin Liu;J. Cai;Lina Zhang
中科院分区：
文献类型：
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作者：
Jian Zeng;Shilin Liu;J. Cai;Lina Zhang
采用溶胶-凝胶法，在纤维素低温溶解的基础上制备了再生纤维素膜，并将其前驱体TiO 2溶胶溶液水解，制备了TiO 2/纤维素复合膜。采用X射线衍射、扫描电子显微镜、透射电子显微镜、热重分析、红外光谱、紫外-可见光谱和光催化降解试验对复合膜的结构和性能进行了表征。再生纤维素膜在湿态下的微纳米孔结构和羟基基团通过静电和氢键相互作用为在纤维素基质中产生和固定TiO 2纳米颗粒提供了空腔和亲和力。在弱紫外光照射下，TiO 2/纤维素复合膜对苯酚的光催化降解具有良好的活性，在有机污染物的光催化降解中具有重要的应用前景。这是一种便携式光催化剂，
TiO2/cellulose composite films have been prepared via a sol−gel method from the hydrolysis of a precursor TiO2 sol solution in the regenerated cellulose films prepared on the basis of cellulose dissolution at low temperature. The structure and properties of the composite films were characterized by using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermal gravimetric analysis, FT-IR, UV−visible spectroscopy, and photocatalytic degradation tests. The micronanoporous structure and hydroxyl groups in the regenerated cellulose films at the wet state provided cavities and affinity for the creation and the immobilization of TiO2 nanoparticles in the cellulose matrix through electrostatic and hydrogen bonding interactions. The TiO2/cellulose composite films exhibited a good photocatalytic activity for photodegradation of phenol under weak UV light irradiation, leading to an important application in photodegradation of organic pollutant. This was a portable photocatalyst, wh...