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Long-lasting activity of Fe-0-C internal microelectrolysis-Fenton system assisted by Fe@C-montmorillonites nanocomposites
Niu, Hongyun; He, Dongwei1; Yang, Yongliang2; Lv, Hongzhou3,4; Cai, Yaqi1,2; Liang, Yong1
2019-11-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume256Pages:-
AbstractCore/shell type Fe-0@carbon (Fe@C) nanocomposites inserted in the interlayer space of montmorillonites (MMT) is prepared by one-step pyrolysis of Fe-metal organic frameworks and MMT. Fe@C-MMT serves as Fenton-like catalyst to degrade organic pollutants based on internal microelectrolysis (IME)-Fenton reactions. The MMT coat accelerates galvanic corrosion of Fe-0 to facilitate in-situ generation of Fe2+ and achieves self-regulation of solution pH. Strengthened elimination of phenol and methyl orange with high mineralization efficiency (80%) at initial pH 3-6.5 was achieved in Fe@C-MMT-H2O2 system compared to Fe@C-, ZVI-, and commercial Fe-C-H2O2 systems. The MMT coat retards contact of Fe-0 and Fe(II) species on Fe@C-MMT surface with H2O2, leading to rate-controlling consumption of H2O2 to keep the long-lasting efficiency of the IME-Fenton system. Fe@C-MMT suspension with 10 mM of H2O2 can continuously degrade organic pollutants within 40 h. Fe@C-MMT can be recycled for five times and shows good resistance to oxygen and acid corrosion.
Department环境化学与生态毒理学国家重点实验室
KeywordInternal microelectrolysis-Fenton Montmorillonites Fenton reaction Phenol Methyl orange
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/42558
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
2.Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Hubei, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Hohai Univ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China
5.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Niu, Hongyun,He, Dongwei,Yang, Yongliang,et al. Long-lasting activity of Fe-0-C internal microelectrolysis-Fenton system assisted by Fe@C-montmorillonites nanocomposites[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,256:-.
APA Niu, Hongyun,He, Dongwei,Yang, Yongliang,Lv, Hongzhou,Cai, Yaqi,&Liang, Yong.(2019).Long-lasting activity of Fe-0-C internal microelectrolysis-Fenton system assisted by Fe@C-montmorillonites nanocomposites.APPLIED CATALYSIS B-ENVIRONMENTAL,256,-.
MLA Niu, Hongyun,et al."Long-lasting activity of Fe-0-C internal microelectrolysis-Fenton system assisted by Fe@C-montmorillonites nanocomposites".APPLIED CATALYSIS B-ENVIRONMENTAL 256(2019):-.
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