Position: Home > Articles > Nanoparticulate Zero-valent Iron Coated with FeOOH as Fenton-like Catalyst to Degrade Nitrobenzene
Journal of Shandong Agricultural University(Natural Science Edition)
2018
(6)
1002-1007
FeOOH包覆纳米零价铁颗粒催化Fenton反应降解硝基苯
作 者：
姚海瑞;张江华;徐欣;吴耀国;胡思海
单 位：
西北工业大学理学院应用化学系;西北工业大学应用化学系
关键词：
FeOOH包覆;纳米零价铁;Fenton反应;硝基苯;废水处理
摘 要：
纳米零价铁颗粒(Nanoparticulate zero-valent iron, n ZVI)的表层包覆物对其催化Fenton反应作用功效影响明显。实验制备并得到FeOOH包覆的n ZVI,考察其催化Fenton反应降解硝基苯(Nitrobenzene, NB)的可能性及作用特点,探讨n ZVI与H2O2投加量和溶液初始p H,及n ZVI和H2O2添加顺序的影响规律。结果表明,n ZVI具有催化Fenton反应降解NB的能力,反应体系初始p H为5.0时n ZVI仍具有较高的催化活性;n ZVI与H2O2投加量和溶液初始p H对NB降解影响明显,都存在最优值,分别约为0.3 g/L、15 mmol/L及4.0;该最优工况条件下,体系反应120 min时NB降解率达到92%;添加n ZVI后再加H2O2更利于NB降解效率的提高。可见,FeOOH包覆的n ZVI催化Fenton反应处理废水中NB具有一定的可行性。
译 名：
Nanoparticulate Zero-valent Iron Coated with FeOOH as Fenton-like Catalyst to Degrade Nitrobenzene
作 者：
YAO Hai-rui;ZHANG Jiang-hua;XU Xin;WU Yao-guo;HU Si-hai;Department of Applied Chemistry/Northwestern Polytechnical University;Xi'an Center of Geological Survey,CGS;
单 位：
YAO Hai-rui%ZHANG Jiang-hua%XU Xin%WU Yao-guo%HU Si-hai%Department of Applied Chemistry/Northwestern Polytechnical University%Xi'an Center of Geological Survey,CGS
关键词：
Coated with FeOOH;;nanoparticulate zero-valent iron;;Fenton;;nitrobenzene;;waste water treatment
摘 要：
Nanoparticulate zero-valent iron(n ZVI) coated with Fe OOH was employed as catalyst to built a heterogeneous Fenton-like system to degrade nitrobenzene(NB) in simulated wastewater. The effects of p H value, n ZVI dose and hydrogen peroxide(H2 O2) concentration were determined. NB was effectively removed under certain congdiation. The optimum dosage of n ZVI and H2 O2 were found to be 0.3 g/L and 15 mmol/L, respectively and 92% removal of NB was observed within 120 min at these conditions at an initial p H and initial NB concentration of 4.0 and 35 mg/L, respectively. The initial p H range of solutions can be extended to 5.0 by n ZVI particles coated with Fe OOH, which is an important advantage for application. The sequential n ZVI/H2 O2 processes was more efficient than the simulataneous process.
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