%0 Journal Article
%T Pr-PVP掺杂Ti/PbO<sub>2</sub>电极制备及其在有机物降解中的应用<br>Preparations and Characterizations of Ti/PbO<sub>2</sub> Electrodes Modified with Rare Earth of Praseodymium and PVP in Electrochemical Degradation of Organics
%A 徐迈
%A 王凤武
%A 梁铣
%A 魏亦军
%A 方文彦
%A 朱传高
%A 胡云虎&lt
%A br&gt
%A XU Mai
%A WANG Feng-wu
%A LIANG Xian
%A WEI Yi-jun
%A FANG Wen-yan
%A ZHU Chuan-Gao
%A HUN Yun-hu
%J 电化学
%D 2017
%R 10.13208/j.electrochem.161048
%X 摘要 在Ti基体上，采用电沉积法制备了镨和聚乙烯吡咯烷酮(PVP)掺杂的Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 电极. SEM显示Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 电极表面颗粒细化，镀层结构更加致密和均匀，XRD 测试表明掺杂使可以使电极的表面颗粒变小.循环伏安 (CV)分析表明共掺杂改性后的电极电催化活性明显提高.强化寿命测试显示Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 电极稳定性更好，使用寿命更长. 将所制备的电极应用于亚甲基蓝(MB)模拟染料废水的降解测试，与常规的Ti/PbO2 电极相比，Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 电极对亚甲基蓝具有更好的脱色率和 COD 除去率. 降解120min 后，对30 mg·L -1 亚甲基蓝的去除率分别可达到99%，对COD去除率为87.9%.<br>The titanium (Ti) based lead oxide (PbO2) electrodes doped with praseodymium oxide (Pr2O3) and polyvinylpyrrolidone (PVP) were prepared by electrodeposition. The surface morphologies and structures of the as-prepared thin films were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) technique, respectively. The results showed that the denser and more uniform coatings with smaller particles and larger surfaces were obtained by doping, which modified the micro-structure of the Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 electrode. Cyclic voltammetry (CV) was also used to study the electrocatalytic activity of electrodes and higher oxidation capacity was obtained with the Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 electrode. The accelerated life of Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 electrode was considerably longer than that of undoped anode. Compared with conventional Ti/PbO2 electrodes, the Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 electrodes exhibited higher decolorization rate and removal rate of COD, reaching 99% and 87.9%, respectively, after the electrolysis time of 120 min during the process of degrading simulative dyeing wastewater of methylene blue. The good electrocatalytic performance of Ti/SnO2-Sb2O3/Pr2O3-PVP-PbO2 makes it a promising anode for treatment of organic pollutants in aqueous solutions
%K 二氧化铅
%K 共掺杂
%K 降解
%K 稀土
%K 电极
%K &lt
%K br&gt
%K lead dioxide
%K co-doped
%K electrode
%K rare earth
%K degradation
%U http://electrochem.xmu.edu.cn/CN/abstract/abstract10387.shtml