不锈钢基Sb-SnO<sub>2</sub>/PbO<sub>2</sub>电极制备及电沉积因素对其性能影响

赵斌; 杨阳; 邱逢涛; 苏艳; 曲振河; 黄倩; 姜琪; 徐浩

doi:10.13205/j.hjgc.202304004

不锈钢基Sb-SnO₂/PbO₂电极制备及电沉积因素对其性能影响

doi: 10.13205/j.hjgc.202304004

赵斌¹,
杨阳²,
邱逢涛¹,
苏艳²,
曲振河¹,
黄倩²,
姜琪²,
徐浩^3, ,

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

基金项目:

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)

详细信息

作者简介:
赵斌(1973-),男,工程师,主要研究方向为火电厂化学水处理技术。13707150592@163.com

通讯作者:
徐浩(1984-),男,教授/博导,主要研究方向为电化学水处理技术。xuhao@xjtu.edu.cn

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出版历程
- 收稿日期: 2022-05-27
- 网络出版日期: 2023-05-26
- 刊出日期: 2023-04-01

PREPARATION OF STAINLESS STEEL-BASED Sb-SnO₂/PbO₂ ELECTRODE AND EFFECT OF ELECTRODEPOSITION FACTORS ON ITS PERFORMANCE

1. Huaneng Yingcheng Thermal Power Co., Ltd, Yingcheng 432406, China;
2. 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;
3. Department of Environmental Science Engineering, Xi'an Jiaotong University, Xi'an 710049, China

摘要

摘要: 以316L不锈钢为基体,制备了一种以锑掺杂二氧化锡(Sb-SnO₂)为中间层的不锈钢基二氧化铅(PbO₂)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-PbO₂层,其形貌为典型的β-PbO₂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PbO₂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PbO₂电极具有较好的催化性能。不锈钢基PbO₂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。
- PbO₂电极 /
- 不锈钢基体 /
- 电沉积 /
- 催化活性 /
- 稳定性
Abstract: In this paper, the stainless steel-based lead dioxide (PbO₂) electrode with antimony-doped tin dioxide (Sb-SnO₂) 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-PbO₂ layer was successfully prepared on the stainless steel substrate with a typical conical structure of β-PbO₂ in its morphology. The results of the enhanced lifetime test indicated that the failure mechanism of the stainless steel-based PbO₂ 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 PbO₂ electrode, after optimizing the conditions in orthogonal experiments. The successful preparation of stainless steel-based PbO₂ electrode is expected to provide a new choice for electrocatalytic oxidation anode materials.
- PbO₂ electrode /
- stainless steel base /
- electrodeposition /
- orthogonal experiment /
- catalytic activity

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