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真空离子溅射法制备TiO₂:Au复合纳米纤维新型光催化剂及其降解乙醛性能研究

Use of Ion Sputter Coating to Prepare the Gold Deposited TiO₂ Nanofiber Photocatalyst and the Photocatalytic Degradation of Acetaldehyde

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【Author】 Pan, Chao,a Gu, Zhongzeb Dong, Lic(a College of Science, Dalian Fisheries University, Dalian 116023)(b State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096)(c College of Science, Dalian Nationalities University, Dalian 116023)

【机构】大连水产学院理学院；东南大学生物电子学国家重点实验室；大连民族学院理学院；

【摘要】采用静电纺丝技术与真空离子溅射相结合的方法制备了TiO2∶Au复合纳米纤维,并采用SEM和X射线电子能谱仪对其进行了表征.结果表明TiO2∶Au纳米纤维的表面形态能通过Au沉积时间得到很好的控制.同时在紫外光照射下采用乙醛体系考察了TiO2纳米纤维和TiO2∶Au复合纳米纤维催化剂降解乙醛性能,结果证明TiO2∶Au复合纳米纤维具有更好的催化效率,紫外光照射70min后乙醛被完全降解.更多还原

【Abstract】 The Au-doped titania(TiO2∶Au) nanofibers were prepared by a combination of an electrospinning method and a sputtering technology, and characterized by scanning electron microscopy and X-ray photoelectron spectroscopy.The results show that the morphologies of Au deposited TiO2 nanofibers can be well controlled by the sputtering time.In addition, the photocatalytic properties of TiO2 nanofibers and TiO2∶Au nanofibers were investigated by degrading acetaldehyde under UV irradiation.The photodegrada-tion of porous TiO2∶Au nanofibers exhibited the best photocatalytic efficiency, where 100% acetaldehyde could be decomposed after UV exposure for 70 min.更多还原