电镀镍中间层对钛基二氧化铅阳极性能的影响
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摘要
通过阴极电镀在钛基表面制备出镍中间层,随后在其上再进行阳极电沉积β-PbO_2涂层来制备Ti/Ni/PbO_2电极,并与无镍中间层的Ti/PbO_2电极进行对比。通过微结构分析、1 mol/LH_2SO_4溶液中的加速寿命试验、电化学性能测试和电氧化苯酚模拟废水行为研究,考察了电镀镍中间层对二氧化铅涂层电极的结构和性能的影响。结果表明,电镀镍中间层的引入不仅使活性β-PbO_2涂层的晶粒细化,增强了电极的催化活性,而且有效地改善了电极表面的导电性,降低了槽压,使得电极表面电势均匀分布,从而明显地延长了电极寿命,降低了电催化氧化降解苯酚模拟废水的能耗。
A nickel intermediate layer was firstly electrodeposited on the titanium substrate by cathodic electroplating, and then theβ-PbO_2 coating was electrosynthesized by anodic oxidation. The Ti/Ni/PbO_2 was compared with the Ti/PbO_2 electrodes withoutintermediate layer. The effects of plating nickel intermediate layer on the structure and performance of PbO_2-coated electrodes wereinvestigated by microstructure characterization, accelerated life test in 1 mol/L H_2SO_4 solution, electrochemical performance andelectro-oxidation behavior of simulated phenol wastewater. The results indicate that the introduction of nickel electroplating intermediatelayer leads to the grain refinement of the surface active β-PbO_2 coating, thus enhancing the catalytic performance of PbO_2-coatedelectrodes. Furthermore, the Ni intermediate improves the conductivity of the electrode, significantly reduces cell voltage, and enhancespotential uniform distribution of the electrode surface, thus extending the electrode lifetime and reducing the energy consumption ofelectrocatalytic oxidation of simulated phenol wastewater.
A nickel intermediate layer was firstly electrodeposited on the titanium substrate by cathodic electroplating, and then theβ-PbO_2 coating was electrosynthesized by anodic oxidation. The Ti/Ni/PbO_2 was compared with the Ti/PbO_2 electrodes withoutintermediate layer. The effects of plating nickel intermediate layer on the structure and performance of PbO_2-coated electrodes wereinvestigated by microstructure characterization, accelerated life test in 1 mol/L H_2SO_4 solution, electrochemical performance andelectro-oxidation behavior of simulated phenol wastewater. The results indicate that the introduction of nickel electroplating intermediatelayer leads to the grain refinement of the surface active β-PbO_2 coating, thus enhancing the catalytic performance of PbO_2-coatedelectrodes. Furthermore, the Ni intermediate improves the conductivity of the electrode, significantly reduces cell voltage, and enhancespotential uniform distribution of the electrode surface, thus extending the electrode lifetime and reducing the energy consumption ofelectrocatalytic oxidation of simulated phenol wastewater.
引文
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[5]Aquino J M,Rocha-Filho R C,Ruotolo L A M et al.Chemical Engineering Journa[J],2014,251:138
[6]Dai Qizhou(戴启洲),Zhou Minghua(周明华),Lei Lecheng(雷乐成)et al.Chinese Science Bulletin(科学通报)[J],2007,52(9):1088
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[9]Sheng Yi(盛怡),Li Guangming(李光明),Hu Huikang(胡惠康)et al.Industrial Water Treatment(工业水处理)[J],2006,26(3):4
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[13]Hong Yi,Yong Chen,Yao hui et al.Journal of Electroanalytical Chemistry[J],2013,689:193
[14]Li Xiaoliang,Hao Xu,Wei Yan et al.Journal of Electroanalytical Chemistry[J],2016,775:43
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[16]Yang Xiaoyong(杨小勇),Si Yunshen(司云森),Zu Peixian(竺培显)et al.Materials Review(材料导报)[J],2013,27(21):31
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[20]Comninellis Ch,Plattner E.Journal of Applied Electrochemistry[J],1982(12):399
[21]Zhang Zhaoxian(张招贤).Titanium Electrode Engineering(钛电极工学)[M].Beijing:Metallurgical Industry Press,2003:206
[22]Tao Zichuan(陶自春),Pan Jianyue(潘建跃),Luo Qifu(罗启富).Journal of Materials Science and Engineering(材料科学与工程学报)[J],2004,22(2):240
[23]Yu Lihua(于丽花),Xue Juanqin(薛娟琴),Jiang Men(蒋朦)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(8):1932
[24]Zhang Jin(张瑾).Thesis for Master Degree[D].Kunming:Kunming University of Science and Technology,2014:28
[25]Ren Xiubin(任秀斌),Lu Haiyan(陆海彦),Niu Yanan(刘亚南)et al.Acta Chimica Sinica(化学学报)[J],2009,67(9):888
[26]Yang Xiupei,Zou Ruyi,Huo Feng et al.Journal of Hazardous Materials[J],2009,164(1):367
[27]Cheng Xinhua,Fan Lei,Yin Huayi et al.Corrosion Science[J],2016,112(1):54