HFCAS OpenIR
Fe/Fe3C@CNTs anchored on carbonized wood as both self-standing anode and cathode for synergistic electro-Fenton oxidation and sequestration of As(III)
Wang, Yongchuang1,2; Li, Wenyi1,2; Li, Huaimeng1,2; Ye, Mengxiang1,2; Zhang, Xian1; Gong, Chengyun1; Zhang, Haimin1; Wang, Guozhong1; Zhang, Yunxia1; Yu, Chengzhong3
2021-06-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Corresponding AuthorZhang, Yunxia(yxzhang@issp.ac.cn)
AbstractConsidering the hypertoxicity and poor affinity of arsenite toward sorbent materials, development and construction of effective purification technologies are of vital importance for efficient conversion of As(III) to As(V) and concomitant capture of As(V). Herein, an electrochemical integrated system for As(III) removal is developed using 3D hierarchically porous hybrid monolith electrodes, constructed by Fe/Fe3C nanoparticles (NPs) and clusters encapsulated in N,O-codoped carbon nanotubes (CNTs) anchored on carbonized wood (CW) framework (denoted as Fe/Fe3C@CNTs/CW). Remarkably, the heterogeneous electro-Fenton reaction on the cathode promotes the oxidation of As(III) into As(V); while the electro-sorption on the anode is conducive to the subsequent arsenic immobilization. Under the optimized conditions, trace As(III) species (1 ppm) can be efficiently removed within 90 min, in which the residual arsenic concentration is below the threshold value (10 ppb) in the drinking water recommended by the World Health Organization (WHO). Significantly, the saturation electro-sorption capacity of the anode materials is approximately 10 times higher than that of physicochemical adsorption. The developed Fe/Fe3C@CNTs/CW electrode exhibits not only superior structural stability due to the protective action from the carbon chainmail but also satisfactory recycling capability with negligible decay in removal efficiency after five cycles, signifying its huge potential in the future sustainable remediation application.
KeywordFe/Fe3C@CNTs/CW Synergistic Electro-Fenton Electro-sorption As(III) Removal
DOI10.1016/j.cej.2021.128925
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0207202] ; National Natural Science Foundation of China[51772299]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000641379000001
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/121954
Collection中国科学院合肥物质科学研究院
Corresponding AuthorZhang, Yunxia
Affiliation1.Chinese Acad Sci, Ctr Environm & Energy Nanomat, Inst Solid State Phys, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotech, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
Recommended Citation
GB/T 7714
Wang, Yongchuang,Li, Wenyi,Li, Huaimeng,et al. Fe/Fe3C@CNTs anchored on carbonized wood as both self-standing anode and cathode for synergistic electro-Fenton oxidation and sequestration of As(III)[J]. CHEMICAL ENGINEERING JOURNAL,2021,414.
APA Wang, Yongchuang.,Li, Wenyi.,Li, Huaimeng.,Ye, Mengxiang.,Zhang, Xian.,...&Yu, Chengzhong.(2021).Fe/Fe3C@CNTs anchored on carbonized wood as both self-standing anode and cathode for synergistic electro-Fenton oxidation and sequestration of As(III).CHEMICAL ENGINEERING JOURNAL,414.
MLA Wang, Yongchuang,et al."Fe/Fe3C@CNTs anchored on carbonized wood as both self-standing anode and cathode for synergistic electro-Fenton oxidation and sequestration of As(III)".CHEMICAL ENGINEERING JOURNAL 414(2021).
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