Intercalation of Nanosized Fe3C in Iron/Carbon To Construct Multifunctional Interface with Reduction, Catalysis, Corrosion Resistance, and Immobilization Capabilities

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Intercalation of Nanosized Fe3C in Iron/Carbon To Construct Multifunctional Interface with Reduction, Catalysis, Corrosion Resistance, and Immobilization Capabilities
	Li, Jianfei ; Lan, Huachun ; Liu, Huijuan ; Zhang, Gong ; An, Xiaoqiang ; Liu, Ruiping ; Qu, Jiuhui
刊名	ACS APPLIED MATERIALS & INTERFACES
	2019-05-01
卷号	11 期号:17 页码:15709-15717
关键词	microelectrolysis core-shell structure electron efficiency surface passivation interface reaction
ISSN号	1944-8244
英文摘要	As a robust reducing system in industrial wastewater treatment, iron/carbon (Fe/C) microelectrolysis suffers from surface passivation and low utilization efficiency. Herein, we introduced Fe3C into the Fe/C system to develop a core-shell Fe-0/Fe3C/C nanorod with a multifunctional interface (Fe3C/C) providing reduction, catalysis, adsorption, and corrosion resistance. The results proved that the fabricated Fe-0/Fe3C/C possesses 5.6 times higher reduction capacity (220 mg/g) for Cr(VI) reduction but a relatively lower Fe leakage (2.7 mg/L) than Fe/C. On the basis of the results of electrochemical characterization (Tafel polarization curves and electrochemical impedance spectroscopy), the corrosion-resistant Fe3C/C shell can significantly prevent surface passivation of the Fe-0 core, whereas Fe3C efficiently catalyzes electron transfer from the inner Fe-0 to the external carbon surface. Moreover, the reductive species involved in Cr(VI) removal were identified as hydrogen atoms, adsorbed Fe(II) ions, and electrons tunneling from Fe-0. STEM, XPS, and Mossbauer spectroscopies were further adopted to characterize the interface reaction of Fe-0/Fe3C/C during the Cr(VI) removal process. Finally, the reaction mechanism for Cr(VI) reduction over Fe-0/Fe3C/C was proposed, and the distribution of active sites was inferred.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43481]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Tsinghua Univ, Sch Environm, Ctr Water & Ecol, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Li, Jianfei,Lan, Huachun,Liu, Huijuan,et al. Intercalation of Nanosized Fe3C in Iron/Carbon To Construct Multifunctional Interface with Reduction, Catalysis, Corrosion Resistance, and Immobilization Capabilities[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(17):15709-15717.
APA	Li, Jianfei.,Lan, Huachun.,Liu, Huijuan.,Zhang, Gong.,An, Xiaoqiang.,...&Qu, Jiuhui.(2019).Intercalation of Nanosized Fe3C in Iron/Carbon To Construct Multifunctional Interface with Reduction, Catalysis, Corrosion Resistance, and Immobilization Capabilities.ACS APPLIED MATERIALS & INTERFACES,11(17),15709-15717.
MLA	Li, Jianfei,et al."Intercalation of Nanosized Fe3C in Iron/Carbon To Construct Multifunctional Interface with Reduction, Catalysis, Corrosion Resistance, and Immobilization Capabilities".ACS APPLIED MATERIALS & INTERFACES 11.17(2019):15709-15717.