摘要
采用电沉积技术,通过改变由Pb(NO_3)_2 0.5 mol/L、NaF 0.05 mol/L和HNO_3 1.0 mol/L组成的电解液中La(NO_3)_3的浓度,制备了一系列La掺杂Ti基PbO_2电极(La-PbO_2/Ti)。利用扫描电子显微镜、X射线衍射、循环伏安法、荧光光谱法和加速寿命试验分别对其表面形貌、晶体结构、电化学性能、羟基自由基产生能力及使用寿命进行表征。结果表明:当电解液中La的浓度为4 mmol/L时,所得La-PbO_2/Ti电极晶粒尺寸最小,表面最平整致密,电催化氧化活性以及稳定性也明显优于其他电极。
A series of La-doped PbO2-coated titanium （La-PbO2/Ti） electrode was prepared by electrodeposition with different La（NO3）3 concentrations in the electrolyte containing Pb（NO3）2 0.5 mol/L, NaF 0.05 mol/L and HNO3 1.0 mol/L. The surface morphologies, crystal structures, electrochemical properties, production capacity of hydroxyl radical and service life of the electrodes were characterized by scanning electron microscopy, X-ray diffraction, cyclic voltammetry, fluorescent spectrometry and accelerated life test, respectively. The results showed that the La-PbO2/Ti electrode obtained with 4 mmol/L La in electrolyte has smaller grain size, finer and more compact surface, and higher electrocatalytic activity and stability than other electrodes.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2016年第4期189-193,共5页
Electroplating & Finishing
基金
吉林省科技发展计划项目(20150520079JH)
四平市科技发展计划项目(2014055)
关键词
钛基氧化物涂层电极
二氧化铅
硝酸镧
掺杂
表征
电催化氧化
oxide-coated titanium electrode
lead dioxide
lanthanum nitrate
doping
characterization
electrocatalyticoxidation
