不锈钢基Sb-SnO_(2)/PbO_(2)电极制备及电沉积因素对其性能影响  

PREPARATION OF STAINLESS STEEL-BASED Sb-SnO_(2)/PbO_(2)ELECTRODE AND EFFECT OF ELECTRODEPOSITION FACTORS ON ITS PERFORMANCE

作　　者：赵斌 杨阳 邱逢涛 苏艳 曲振河 黄倩 姜琪 徐浩[3] ZHAO Bin;YANG Yang;QIU Fengtao;SU Yan;QU Zhenhe;HUANG Qian;JIANG Qi;XU Hao(Huaneng Yingcheng Thermal Power Co.,Ltd,Yingcheng 432406,China;Xi'an TPRI Water-Management&Environmental Protection Co.,Ltd,State Key Laboratory of High-Efficiency Flexible Coal Power Generation and Carbon Capture Utilization and Storage,Xi'an 710054,China;Department of Environmental Science Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]华能应城热电有限责任公司,湖北应城432406 [2]西安西热水务环保有限公司,高效灵活煤电及碳捕集利用封存全国重点实验室,西安710054 [3]西安交通大学环境科学与工程系,西安710049

出　　处：《环境工程》2023年第4期26-31,39,共7页Environmental Engineering

基　　金：陕西省自然科学基础研究计划(2021JM-012);中国华能集团有限公司总部科技项目(HNKJ21-H61)。

摘　　要：以316L不锈钢为基体,制备了一种以锑掺杂二氧化锡(Sb-SnO_(2))为中间层的不锈钢基二氧化铅(PbO_(2))电极,用于对酸性红G(ARG)的脱色处理。利用扫描电镜(SEM)、X-射线衍射(XRD)、强化寿命测试、线性扫描测试(LSV)等方法对所制备电极的表观形貌、晶体结构、稳定性和催化性能等进行表征。在此基础上,采用正交实验优化对电极稳定性影响较大的4种典型因素(铅离子浓度、温度、电流密度和电沉积时间)。结果表明:在不锈钢基体上成功制备出了β-PbO_(2)层,其形貌为典型的β-PbO_(2)锥形结构;强化寿命测试结果表明不同于钛基氧化物电极的均匀腐蚀,不锈钢基PbO_(2)电极的失效机制主要为点蚀;采用LSV测试、羟基自由基(·OH)产量测试和电催化降解测试证明了正交实验优化条件后的不锈钢基PbO_(2)电极具有较好的催化性能。不锈钢基PbO_(2)电极的成功制备有望为电催化氧化阳极材料的改性方法提供新思路。In this paper,the stainless steel-based lead dioxide(PbO_(2))electrode with antimony-doped tin dioxide(Sb-SnO_(2))interlayer was prepared using 316L stainless steel as the substrate,and used for the decolorization of Acid Red G(ARG).The morphology,crystal structure,stability and catalytic performance of the electrode were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),enhanced lifetime test,and linear scan test(LSV).Based on this,orthogonal experiments were used to optimize four typical factors(lead ion concentration,temperature,current density and electrodeposition time)that had a strong influence on stability of the electrode.The results showed that the β-PbO_(2) layer was successfully prepared on the stainless steel substrate with a typical conical structure of β-PbO_(2) in its morphology.The results of the enhanced lifetime test indicated that the failure mechanism of the stainless steel-based PbO_(2) electrode was mainly pitting corrosion,which was different from the uniform corrosion of the titanium-based oxide electrode.The LSV test,hydroxyl radical(·OH)yield test and electrocatalytic degradation test were used to demonstrate the better catalytic performance of the stainless steel-based PbO_(2) electrode,after optimizing the conditions in orthogonal experiments.The successful preparation of stainless steel-based PbO_(2) electrode is expected to provide a new choice for electrocatalytic oxidation anode materials.

关 键 词：PbO_(2)电极 不锈钢基体 电沉积 催化活性 稳定性 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学] O646.54[理学—化学]