高比表面积CuPc/TiO2纳米管复合材料的制备及其可见光光催化活性

催化学报 , 2012, 33(6): 1048-1054. doi: 10.3724/SP.J.1088.2012.20126

高比表面积CuPc/TiO2纳米管复合材料的制备及其可见光光催化活性

廖兰 ^1, , 黄彩霞 ^2, , 陈劲松 ^3, , 吴月婷 ^4, , 韩志钟 ^5, , 潘海波 ^6, , 沈水发 ^7,

1.福州大学化学化工学院,福建福州 350108

2.福州大学化学化工学院,福建福州 350108;福州大学福建省医疗器械和医药技术重点实验室,福建福州 350002

3.福州大学化学化工学院,福建福州 350108

4.福州大学化学化工学院,福建福州 350108;福州大学福建省医疗器械和医药技术重点实验室,福建福州 350002

5.福州大学化学化工学院,福建福州 350108

6.福州大学化学化工学院,福建福州 350108;福州大学福建省医疗器械和医药技术重点实验室,福建福州 350002

7.福州大学化学化工学院,福建福州 350108

基金项目: 福州大学科研项目(0460-023028) 科技部国际合作项目(2009DFA32050) 福建省科技术厅(2008F5033;2009I0016) 福建省自然科学基金(2008J0330)

关键词：二氧化钛 , 纳米管 , 酞菁铜 , 染料敏化 , 可见光 , 罗丹明B

Synthesis of CuPc/TiO2 Nanotube Composite Materials with Large Surface Area and Their Photocatalytic Activity under Visible Light

以P25为前驱体,在碱性条件下采用水热法制备了TiO2纳米管(NT),然后通过浸渍法将敏化剂酞菁铜(CuPc)附着于TiO2NT表面,制得可见光响应的CuPc/TiO2NT复合光催化材料,并对其进行了表征,考察了它在可见光下降解罗丹明B的光催化活性.结果表明,在NaOH碱性条件下水热法制备的TiO2NT具有较大的比表面积(362.6 m2/g)和高孔容(2.039 cm3/g),经0.2％CuPc修饰后,复合材料仍然保持较高的比表面积(244.2 m2/g)和孔容(1.024 cm3/g),进而提高了CuPc与TiO2界面的光生电荷转移速率,使光生电子-空穴能够在此界面上形成有效分离,从而明显提高了复合材料的光催化活性.在可见光辐照下,0.2％CuPc/TiO2NT复合材料的光催化性能最好,反应180 min时,罗丹明B的降解率可达59％,比TiO2NT的提高了3.3倍.

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