Synthesis and characterization of biomimetic Fe3O4/coke magnetic nanoparticles composite material

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• 作者：Lulu Lu 卢露隿/a> ; Wenbing Li 李文僿/a> ; Guanghua Wang…
• 关键词：biomimetic ; Fe3O4/Coke ; heterogeneous catalyst ; P ; NP
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：31
• 期：2
• 页码：254-259
• 全文大小：776 KB
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• 作者单位：Lulu Lu 卢露露 (1)
  Wenbing Li 李文兵 (1)
  Guanghua Wang (1)
  Zheng Zhang (1)
  Dong Wan (1)
  Lijun Lü (1)
  Nianru Liu (1)
  Biao Chen (1)
  Shiyun Jiang (2)
  
  1. College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan, 430081, China
  2. College of Biological and Chemicial Engineering, Guangxi University of Science and Technology, Guangxi, 545006, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Chinese Library of Science
  
• 出版者：Wuhan University, co-published with Springer
• ISSN：1993-0437

文摘

A composite material (Fe₃O₄/Coke) using coke supported Fe₃O₄ magnetic nanoparticles was successfully prepared via an in-situ chemical oxidation precipitation method and characterized by SEM, XRD, Raman, and FTIR. The results showed that the Fe₃O₄ nanoparticles existed steadily on the surface of coke, with better dispersing and smaller particle size. The catalytic ability of Fe₃O₄/Coke were investigatied by degrading p-nitrophenol (P-NP). The results showed that the apparent rate constant for the P-NP at 1.0 g·L−1 catalyst, 30 mmol·L−1 H₂O₂, pH=3.0, 30 °C and the best ratio of Coke/Fe₃O₄ 0.6, was evaluated to be 0.027 min–1, the removal rate of COD_Cr was 75.47%, and the dissolubility of Fe was 2.42 mg·L–1. Compared with pure Fe₃O₄, the catalytic ability of Fe₃O₄/Coke in the presence of H₂O₂ was greatly enhanced. And Fe₃O₄/Coke was a green and environmental catalyst with high catalytic activity, showing a good chemical stability and reusability.