Ternary Titania鈥揅obalt Ferrite鈥揚olyaniline Nanocomposite: A Magnetically Recyclable Hybrid for Adsorption and Photodegradation of Dyes under Visible Light

详细信息    查看全文

• 作者：Pan Xiong ; Lianjun Wang ; Xiaoqiang Sun ; Binhai ; Xu ; Xin Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：July 31, 2013
• 年：2013
• 卷：52
• 期：30
• 页码：10105-10113
• 全文大小：615K
• 年卷期：v.52,no.30(July 31, 2013)
• ISSN：1520-5045

文摘

A straightforward strategy is designed for the fabrication of magnetically recyclable ternary titania鈥揷obalt ferrite鈥損olyaniline (P25-CoFe₂O₄-PANI) photocatalysts with differing P25/CoFe₂O₄ ratio. The pseudo-second-order and Langmuir models are found to be most suitable for describing the adsorption of methyl orange (MO) onto the photocatalysts. The photocatalytic activity of P25-CoFe₂O₄-PANI is evaluated by the degradation of various dyes under visible light irradiation, and the results show that the ternary P25-CoFe₂O₄-PANI photocatalyst exhibits high photocatalytic activity due to the good adsorption capacity of the hybrid and the introduction of P25, which can further improve the separation of the light-induced electron鈥揾ole pairs. The degradation of anionic dyes is much more effective than that of cationic dyes due to the negatively charged groups of anionic dyes undergo electrostatic attraction with the positively charged backbone of PANI, and such an effective adsorption helps in promoting the degradation.