Iron(III)鈥揂lginate Fiber Complex as a Highly Effective and Stable Heterogeneous Fenton Photocatalyst for Mineralization of Organic Dye

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• 作者：Bing Li ; Yongchun Dong ; Chi Zou ; Yiming Xu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：March 19, 2014
• 年：2014
• 卷：53
• 期：11
• 页码：4199-4206
• 全文大小：411K
• 年卷期：v.53,no.11(March 19, 2014)
• ISSN：1520-5045

文摘

Iron(III)鈥揳lginate fiber complex was prepared through the coordination of alginate fiber with Fe(III) ions and characterized using Fourier transform infrared, X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance UV鈥搗is spectra, respectively. Effect of Fe(III) initial concentration and reaction temperature on the Fe content of the obtained complex was also investigated. It was then tested as a heterogeneous Fenton photocatalyst for dye degradation with H₂O₂. The results indicated that the carboxyl groups from alginate fiber successfully reacted with Fe(III) ions to form the complex. Higher Fe(III) ion concentration or elevation of temperature led to a proportional increase in the Fe content of the complex. Moreover, Fe(III)鈥揳lginate fiber complex could effectively catalyze the dye mineralization in the dark or under light irradiation in a wide pH range of 3鈥?. Its catalytic activity was hardly affected by Na₂SO₄ or NaCl in wastewater. The stable catalytic performance was observed in its reuse processes.