Electrochemical synthesis of PANI-ERGO composite electrode and its application in the reduction of hexavalent chromium

doi:10.1016/j.jece.2022.107447

IR > 土木工程学院

	Electrochemical synthesis of PANI-ERGO composite electrode and its application in the reduction of hexavalent chromium
	Li, Yanjuan1,2,3 ; Wang, Sanfan 1,3; Wu, Nan 1,3; Li, Yanhong 1,3; Zhang, Xuemin 1,3; Ma, Zhihui 4
	2022-06
发表期刊	Journal of Environmental Chemical Engineering
ISSN	2213-2929
卷号	10 期号:3
摘要	Electroreduction is a promising approach for toxic Cr (VI) remediation due to its efficiency and excellent environmental compatibility. This study researches the facile electrode preparation and high mass transfer efficiency in Cr (VI) reduction application. Firstly, polyaniline (PANI)/electrochemically reduced graphene oxide (ERGO)/Ti electrode was synthesized in situ on a titanium mesh substrate via a three-step electrochemical method. The pretreated electrodes were characterized by SEM, FTIR, XPS. The EIS and CV were also adopted to prove further at the performance of electron transfer and electrocatalytic activity of Cr (VI) on the interface of the composite film. Subsequently, the reduction efficiency of Cr (VI) was invested in the electroreduction process by the PANI/ERGO/Ti electrode, factors such as potential condition, pH, and initial concentration of Cr (VI) were also considered. It showed higher degradation percentage and current efficiencies of the PANI/ERGO/Ti compared to the PANI/Ti and the ERGO/Ti. And revealed that lower pH is more favorable, and higher initial concentration is more accessible to reduce. The proposed test result reached 99.29% Cr (VI) reduction efficiency with the potential of − 0.8 V, pH of 2, and concentration of Cr (VI) is 10 mg/L within 2 h. Based on the above analysis, reasons for these results may attribute to a combination mechanism of adsorption and electro-reduction. Furthermore, PANI/ERGO/Ti presented good durability and achieved the expected application in actual wastewater in the system. This research could offer an effective strategy for graphene-supported polymer film electrodes which can be utilized for effective electrochemical reduction of Cr (VI)-containing wastewater. © 2022 Elsevier Ltd
关键词	Chromium compounds Composite films Efficiency Electrochemical electrodes Electrolytic reduction Mass transfer Polymer films Semiconducting films Titanium oxides Cr-containing wastewater Electro reduction Electrochemical reduction of graphene oxide Electrochemical reductions Electrochemical synthesis First-order kinetic models Initial concentration Reduction efficiency Ti electrode
DOI	10.1016/j.jece.2022.107447
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000790508400004
出版者	Elsevier Ltd
EI入藏号	20221211826110
EI主题词	Graphene
EI分类号	533.1 Ore Treatment ; 641.3 Mass Transfer ; 712.1 Semiconducting Materials ; 761 Nanotechnology ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 815.1 Polymeric Materials ; 913.1 Production Engineering
来源库	WOS
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/157863
专题	土木工程学院
通讯作者	Wang, Sanfan
作者单位	1.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, 88 Anning West Rd, Lanzhou 730070, Peoples R China; 2.Lanzhou Univ Technol, Sch Civil Engn, 287 Langongping, Lanzhou 730050, Peoples R China; 3.Minist Educ, Engn Res Ctr Cold & Arid Reg Water Resource Compre, 88 Anning West Rd, Lanzhou 730070, Peoples R China; 4.Tianjin Inst Surveying & Mapping Co Ltd, 9 Changling Rd, Tianjin 300181, Peoples R China
第一作者单位	兰州理工大学
推荐引用方式 GB/T 7714	Li, Yanjuan,Wang, Sanfan,Wu, Nan,et al. Electrochemical synthesis of PANI-ERGO composite electrode and its application in the reduction of hexavalent chromium[J]. Journal of Environmental Chemical Engineering,2022,10(3).
APA	Li, Yanjuan,Wang, Sanfan,Wu, Nan,Li, Yanhong,Zhang, Xuemin,&Ma, Zhihui.(2022).Electrochemical synthesis of PANI-ERGO composite electrode and its application in the reduction of hexavalent chromium.Journal of Environmental Chemical Engineering,10(3).
MLA	Li, Yanjuan,et al."Electrochemical synthesis of PANI-ERGO composite electrode and its application in the reduction of hexavalent chromium".Journal of Environmental Chemical Engineering 10.3(2022).