中国塑料 ›› 2014, Vol. 28 ›› Issue (06): 98-103 .DOI: 10.19491/j.issn.1001-9278.2014.06.018

• 塑料与环境 • 上一篇    下一篇

铌酸银紫外光催化降解聚氯乙烯薄膜的研究

  

  • 收稿日期:2014-01-08 修回日期:2014-02-13 出版日期:2014-06-26 发布日期:2014-06-26

Study of Ultraviolet Photocatalytic Degradation of Poly(vinyl chloride )Film by Niobium Acid Silver Photocatalyst

  • Received:2014-01-08 Revised:2014-02-13 Online:2014-06-26 Published:2014-06-26

摘要: 通过玻璃涂层法分别制备了纯聚氯乙烯(PVC)薄膜和添加钙钛矿型铌酸银(AgNbO3)光催化剂的复合膜(PVC/AgNbO3)。在紫外光照射条件下分别对PVC和PVC/AgNbO3薄膜进行了光催化降解实验。利用扫描电子显微镜、X射线衍射仪和傅里叶红外光谱对光照前后薄膜的形貌及光催化降解过程进行了分析表征。结果表明,6 W紫外光辐射480 h后,纯PVC薄膜失重为3.92 %;PVC/3 % AgNbO3、PVC/6 % AgNbO3、PVC/9 % AgNbO3、PVC/15 % AgNbO3复合薄膜分别失重19.16 %、22.94 %、26.59 %、31.75 %,AgNbO3光催化剂加速了PVC薄膜降解。

关键词: 聚氯乙烯, 薄膜, 铌酸银, 紫外光催化, 降解

Abstract: PVC/AgNbO3 composite film was prepared by glass coating method. The photo-catalytic degradation experiments were carried out under UV light irradiation and compared with neat PVC film. The sample were characterized by scanning electron microscope(SEM),X-ray diffraction(XRD), and Fourier transform infrared spectroscopy(FTIR).The PVC/AgNbO3 composite film extent of the film was evaluated directly by the weight loss. The weight loss rate of the PVC/0 % AgNbO3,PVC/3 % AgNbO3,PVC/6 % AgNbO3,PVC/9 % AgNbO3,PVC/15 % AgNbO3 films after 480 h irradiation, were 3.92, 19.16, 22.94, 26.59 and 31.75, respectively. This proved that the AgNbO3 remarkably promoted the photo-catalytic degradation of PVC film.

Key words: poly(vinyl chloride), film, niobium acid silver, ultraviolet photocatalytic, degradation

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