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题名: Cobalt-iron Oxide, Alloy and Nitride: Synthesis, Characterization and Application in Catalytic Peroxymonosulfate Activation for Orange II Degradation
作者: Zhu, Kaixin1, 2;  Jin, Changzi1;  Klencsar, Zoltan3;  Ganeshraja, Ayyakannu Sundaram1;  Wang, Junhu1
关键词: Co-Fe catalysts ;  advanced oxidation processes ;  peroxymonosulfate activation ;  sulfate radical
刊名: CATALYSTS
发表日期: 2017-05-01
DOI: 10.3390/catal7050138
卷: 7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: In meeting the need for environmental remediation in wastewater treatment and the development of popular sulfate-radical-based advanced oxidation processes (SR-AOPs), a series of Co/Fe-based catalysts with confirmed phase structure were prepared through extended soft chemical solution processes followed by atmosphere-dependent calcination. Powder X-ray diffraction (XRD),scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Fe-57 Mossbauer spectroscopy were employed to characterize the composition, morphology, crystal structure and chemical state of the prepared catalysts. It was shown that calcination in air, nitrogen and ammonia atmospheres generated Co-Fe catalysts with cobalt ferrite (CoFe2O4), Co-Fe alloy and Co-Fe nitride as dominant phases, respectively. The prepared Co/Fe-based catalysts were demonstrated to be highly efficient in activating peroxymonosulfate (PMS) for organic Orange II degradation. The activation efficiency of the different catalysts was found to increase in the order CoFe2O4 < Co-Fe nitride < Co-Fe alloy. Sulfate radical was found to be the primary active intermediate species contributing to the dye degradation for all the participating catalysts. Furthermore, a possible reaction mechanism was proposed for each of the studied catalysts. This study achieves progress in efficient cobalt-iron catalysts using in the field of SR-AOPs, with potential applications in environment remediation.
关键词[WOS]: ENHANCED HETEROGENEOUS ACTIVATION ;  DRIVEN PHOTOCATALYTIC ACTIVITY ;  AQUEOUS-ORGANIC POLLUTANTS ;  OXYGEN REDUCTION REACTION ;  VISIBLE-LIGHT ;  FE-CO/SBA-15 CATALYST ;  MAGNETIC-PROPERTIES ;  FINE NANOPARTICLES ;  ADVANCED OXIDATION ;  DOPED GRAPHENE
语种: 英语
WOS记录号: WOS:000404099100013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152074
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Hungarian Acad Sci, Energy Res Ctr, Inst Energy Secur & Environm Safety, Nucl Anal & Radiog Dept, Konkoly Thege Miklos Ut 29-33, H-1121 Budapest, Hungary

Recommended Citation:
Zhu, Kaixin,Jin, Changzi,Klencsar, Zoltan,et al. Cobalt-iron Oxide, Alloy and Nitride: Synthesis, Characterization and Application in Catalytic Peroxymonosulfate Activation for Orange II Degradation[J]. CATALYSTS,2017,7.
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