Fe/Fe3C@CNTs anchored on carbonized wood as both self-standing anode and cathode for synergistic electro-Fenton oxidation and sequestration of As(III)

doi:10.1016/j.cej.2021.128925

	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, Yongchuang 1,2; Li, Wenyi 1,2; Li, Huaimeng 1,2; Ye, Mengxiang 1,2; Zhang, Xian 2; Gong, Chengyun 2; Zhang, Haimin 2; Wang, Guozhong 2; Zhang, Yunxia 2; Yu, Chengzhong 3
刊名	CHEMICAL ENGINEERING JOURNAL
	2021-06-15
卷号	414
关键词	Fe/Fe3C@CNTs/CW Synergistic Electro-Fenton Electro-sorption As(III) Removal
ISSN号	1385-8947
DOI	10.1016/j.cej.2021.128925
通讯作者	Zhang, Yunxia(yxzhang@issp.ac.cn)
英文摘要	Considering 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.
资助项目	National Key R&D Program of China[2017YFA0207202] ; National Natural Science Foundation of China[51772299]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000641379000001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121953]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Yunxia
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.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 3.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
推荐引用方式 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).