化学还原氧化石墨烯修饰PbO<sub>2</sub>电极及催化降解酸性红G

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (939 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract It is important to improve the stability and catalytic capacity of Ti/PbO₂ electrode for long term running of electrochemical process. In the present work chemically reduced graphene oxide (RGO) was included into β-PbO₂ layer by using codeposition method to improve the performance of the electrode. The modified electrode was characterized by using scanning electron microscopy (SEM), X-ray diffractometry (XRD), cyclic voltammetry (CV) and electrochemical alternating impedance (EIS). Its capacity in producing hydroxyl radical (·OH) and lifetime was also checked. The catalytic effect of the PbO₂-RGO electrode was evaluated using acidic red G (ARG) as the target degradant. The results showed that the modified PbO₂-RGO electrode was β-PbO₂ in nature. After modification the oxygenation overpotential increased from 1.60V to 1.83V, While the membrane impedance decreased from 144 Ω/cm² to 16.2 Ω/cm² with an increment of lifespan by 43.6%. The ARG degradation experiments demonstrated significant improvement on catalytic performance after electrode modification. Under optimized condition PbO₂-RGO (0.05) electrode achieved decolorization of ARG for 98.5% and COD removal of 76.89% within 120min.

Key words： chemically reduced graphene oxide doping Ti/PbO₂ electrode electrocatalytic oxidation acidic red G

Received: 06 January 2021

PACS:

X703.2

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LU Si-jia
	ZHENG Xing
	LI Xiao-liang

Cite this article:

LU Si-jia,ZHENG Xing,LI Xiao-liang. Chemically reduced graphene oxide modified PbO₂ electrodes and the degradation of acidic red G[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3635-3641.

URL:

http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I8/3635

[1]	Radjenovic J, Sedlak DL. Challenges and opportunities for electrochemical processes as next-generation technologies for the treatment of contaminated water[J]. Environmental Scicence & Technology, 2015,49(19):11292-11302.
[2]	Zhai W D, Li M, Zhang Q. Influence mechanism and synergistic effects of photocatalytic degradation of tetracycline hydrochloride by the combination of persulfate and nano-ZnO[J]. China Environmental Science, 2020,40(6):2483-2492.
[3]	R Xie, X Meng, Sun P, et al. Crittenden, Electrochemical oxidation of ofloxacin using a TiO2-based SnO2Sb/polytetrafluoroethylene resin-PbO2 electrode:reaction kinetics and mass transferimpact[J]. Applied Catalysis B:Environmental, 2017,(203):515-525.
[4]	FC Moreira, ARB Rui, E Brillas, VJP Vilar. Electrochemical advanced oxidation processes:a review on their application to synthetic and real wastewaters[J]. Applied Catalysis B:Environmental, 2017,(202):217-261.
[5]	Xu Hao, Yuan Quansheng, Shao Dan, et al. Fabrication and characterization of PbO2 electrode modified with[Fe(CN)6]3- and its application on electrochemical degradation of alkalilignin. Journal of Hazardous Materials, 2015,(286):509-516.
[6]	Huang C J, Ren B L, Li M Y, et al. Electrochemical removal ofthiamethoxam using three-dimensional porous PbO2-CeO2 composite electrode:Electrode characterization, operational parameters optimization and degradation pathway[J]. Chemical engineering journal, 2018,(350):960-970.
[7]	Xu M, Wang Z C, Wang F, et al. Fabrication of cerium doped Ti/nanoTi-O2/PbO2 electrode with improved electrocatalytic activity and its application in organic degradation[J]. Electrochimica Acta, 2016,(201):240-250.
[8]	Yao Y W, Huang C J, Chen X, et al. Preparation and characterization of a porous structure PbO2-ZrO2 nanocomposite electrode and its application in electrocatalytic degradation of crystal violet[J]. Journal of the Electrochemical Society, 2017,(164):367-373.
[9]	Dai Q, Xia Y, Chen J. Mechanism of enhanced electrochemical degradation of highly concentrated aspirin wastewater using a rare earth La-Y co-doped PbO2 electrode[J]. Electrochimica Acta, 2016, (188):871-881.
[10]	Dai Q, Xia Y, Chen J. Electrochemical degradation of aspirin using a Ni doped PbO2 electrode[J]. Journal of Electroanalytical Chemistry, 2015,(744):117-125.
[11]	Rosestolato D, Amadelli R, Velichenko A B. Electrode characteristics for ozone production:a case study using undoped and doped PbO2 on porous platinised titanium substrates[J]. Journal of Solid State Electrochemistry, 2016,20(4):1181-1190.
[12]	Chen C, Hsiao P-H, Wei T, et al. Well incorporation of carbon nanodots with silicon nanowire arrays featuring excellent photocatalytic performances[J]. Physical Chemistry Chemical Physics, 2017,19(19):11786.
[13]	Zhao S, Li C, Hui L, et al. Carbon nanodots modified cobalt phosphate as efficient electrocatalyst for water oxidation[J]. Journal of Materiomics, 2015,1(3):236-244.
[14]	张博文,汤莎莎,宋爽.碳纳米点掺杂二氧化铅电极电催化降解2,4-D[J]. 水处理技术, 2018,(7):21-25. Zhang B W, Tang S S, SONG S. Electrochemical degradation of 2,4-D with carbon nanodots doped lead dioxide electrode[J]. Technology of Water Treatment, 2018,(7):21-25.
[15]	Liu R, Liu Y, Kang Q, et al. Synergistic effect of graphene and polypyrrole to enhance the SnO2 anode performance in lithium-ion batteries[J]. Rsc Advances, 2016,6(12):9402-9410.
[16]	Chen W, Song K, Mi L, et al. Synergistic effect induced ultrafine SnO2/graphene nanocomposite as high-performance anodes in lithium/sodium-ion batteries[J]. Journal of Materials Chemistry, 2017,5(20):10027-10038.
[17]	吴婕.氧化石墨烯还原方法的研究进展[J]. 化工进展, 2013, 32(6):1352-1356. Wu J. Progress of reduction methods of graphene oxide[J]. Chemical Industry and Engineering Progress, 2013,32(6):1352-1356.
[18]	杨珊珊,孙怡,耿瑶瑶.还原氧化石墨烯制备方法研究进展[J]. 化学工程师, 2016,30(10):37-40. Yang S S, Sun Y, Geng Y Y. Progress on preparation of reduced garaphene oxide[J]. Chemical Engineer, 2016,30(10):37-40.
[19]	李晓良,徐浩,延卫.高效Ti/PbO2电极制备及对酸性红G的降解研究[J]. 中国环境科学, 2017,37(7):2591-2598. Li X L, Xu H, Yan W. Study on the preparation of high efficient Ti/PbO2 electrode and degradation of acid red G[J]. China Environmental Science, 2017,37(7):2591-2598.
[20]	Li X, Xu H, Yan W, Wei. Fabrication and characterization of a PbO2-TiN composite electrode by Co-deposition method[J]. Journal of the Electrochemical Society, 2016,163(10):592-602.
[21]	李晓良,徐浩,延卫.十二烷基二甲基甜菜碱对Ti/PbO2电极的改性研究[J]. 西安交通大学学报, 2017,51(5):142-148. Li X L, Xu H, Yan W. Modification of Ti/PbO2 electrode with dodecyl dimethyl betaine[J]. Journal of Xi'an Jiaotong University, 2017, 51(5):142-148.
[22]	Wang C, Yu Y, Yin L, et al. Insights of ibuprofen electro-oxidation on metal-oxide-coated Ti anodes:Kinetics, energy consumption and reaction mechanisms[J]. Chemosphere Environmental Toxicology & Risk Assessment, 2016,163:584-591.
[23]	徐浩,郭午琪,张林,等.钛基二氧化铅电极对酸性红G的电催化降解[J]. 环境工程学报, 2016,10(11):6479-6485. Xu H, Guo W Q, Zhang L, et al. Electrochemical degradation od acid red G by titanium-based PbO2 anode[J]. Chinese Journal of Environmental Engineering, 2016,10(11):6479-6485.