Fe_3O_4基复合材料的制备及其移除水中污染物性能研究

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• 英文论文题名：Preparation of Fe_3O_4-based composite materials and their applications in removal of organic pollutants from water
• 论文作者：李克艳 ; 柴凡凡 ; 赵永琴 ; 安素峰 ; 郭新闻
• 英文论文作者：Keyan Li ; Fanfan Chai ; Yongqin Zhao ; Sufeng An ; Xinwen Guo ; State Key Laboratory of Fine Chemicals ; PSU-DUT Joint Center for Energy Research ; School of Chemical Engineering ; Dalian University of Technology
• 年：2016
• 作者机构：大连理工大学化工学院宾州-大连联合能源研究中心精细化工国家重点实验室;
• 论文关键词：Fe_3O_4 ; 复合 ; 吸附 ; 类Fenton ; 有机染料
• 会议召开时间：2016-07-01
• 会议录名称：中国化学会第30届学术年会摘要集-第二十六分会：环境化学
• 语种：中文
• 分类号：X703;TB33
• 学会代码：ZGHY
• 会议名称：中国化学会第30届学术年会-第二十六分会 ; 环境化学
• 会议地点：中国辽宁大连
• 主办单位：中国化学会
• 学会名称：中国化学会
• 页数：1
• 文件大小：197k
• 原文格式：D
• 会议级别：全国

摘要

磁铁矿(Fe_3O_4)由于具有廉价、无毒、易于回收利用等优点成为吸附剂材料和非均相Fenton催化剂的研究热点[1,2]。通过形貌控制、与其它材料复合等方法可以有效地提高其吸附和催化性能[3,4]。本文采用一步水热法合成了具有不同Fe/Ce比的Fe_3O_4/Ce CO3OH复合物[5],相比于单一组分的Fe_3O_4和Ce CO3OH,铁铈复合物的吸附性能得到了很大提高。当铁铈比为4:1时,该复合物对亚甲基蓝具有最高的吸附量,达到666.2 mg g?1,远远高于其它无机磁性吸附材料。铁铈复合物优异的吸附性能归因于其表面丰富的未配位羧基。利用简便两步法合成了多孔的Fe_3O_4/C/Cu2O及Fe_3O_4/C/Cu复合材料,将其作为光Fenton催化剂降解亚甲基蓝时,表现出了较高的催化活性,铜的引入促进了材料对可见光的吸收,与Fe_3O_4发生了协同作用,因此提高了材料的催化性能。
Magnetite(Fe_3O_4) has attracted much attention as absorbent materials and heterogeneous Fenton-like catalysts due to its low cost,nontoxicity and ease of separation.In this work,magnetic Fe_3O_4/Ce CO3 OH composites were prepared through a one-step hydrothermal route.Results showed that the composite of Fe_3O_4 with Ce CO3 OH significantly improved the adsorption ability compared to both Fe_3O_4 and Ce CO3 OH.The maximum adsorption capacity reached 666.2 mg g?1 for methylene blue(MB) at the Fe/Ce dosage ratio of 4:1,much higher than other magnetic adsorbents.The adsorption amount of the adsorbent was closely related to the amount of surface carboxylate groups.Porous Fe_3O_4/C/Cu2 O and Fe_3O_4/C/Cu composites were prepared by a facile two-step method.The composites exhibited excellent catalytic activity as photo-Fenton catalysts for degradation of MB.The introduction of Cu promoted the absorption of visible light and generated synergistic effect with Fe_3O_4,thus leading to good catalytic performance.

引文

[1]S.R.Pouran,A.A.A.Raman,and W.M.A.W.Daud,J.Clean.Prod.,2014,64:24-35.
    [2]J.Wang,G.Zhao,Y.Li,H.Zhu,X.Peng and X.Gao,Dalton Trans.,2014,43:11637–11645.
    [3]A.B.Dichiara,M.R.Webber,W.R.Gorman and R.E.Rogers,ACS Appl.Mater.Inter.,2015,7:15674–15680.
    [4]L.Xu and J.Wang,Environ.Sci.Technol.,2012,46:10145-10153.
    [5]K.Li,F.Chai,Y.Zhao and X.Guo,RSC Adv.,2015,5:94397–94404.