期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 826, 期 -, 页码 181-190出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.08.039
关键词
Electrochemical oxidation; Quantum chemistry calculation; Ordered macro-porous electrode; Nitrogen-heterocyclic compounds
资金
- National Natural Science Foundation of China [51578287]
- National Sci-Tech Support Plan of China [2014BAC08B03]
- Natural Science Foundation of Jiangsu Province [BK20150778]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
A highly ordered three-dimensional macro-porous PbO2 (3D porous PbO2) electrode has been prepared for electrochemical oxidation of nitrogen-heterocyclic compounds. The 3D porous PbO2 electrode was fabricated by templated electrochemical deposition method with TiO2 nanotube arrays as substrate and SnO2-Sb as intermediate layer. The morphology and composition characterization of the 3D porous PbO2 electrode was performed by field emission scanning electron microscopy and X-ray diffraction, which revealed a uniform distribution of highly ordered macro-porous beta-PbO2 structure. The Brunner - Emmet - Teller analysis suggested the electrode possessed large specific surface area of 37.39 m(2).g(-1). Electrochemical measurements indicated the electrode had a favourable oxygen evolution potential of 1.89 V and inner voltammetric charge of 14.48 mC.cm(-2), which were higher than that of conventional PbO2 electrode. Furthermore, the electrochemical oxidation and TOC removal percentage of pyrrole, pyrazole and tetrazole obtained by 3D porous PbO2 electrode were 93.4%, 72.7%, 61.2% and 66.7%, 57.3%, 38.6% respectively, which were also superior to conventional PbO2 electrode. The intermediates were detected and analyzed by high-performance liquid chromatography, gas chromatography-mass spectrometer, and ion chromatography to propose a degradation pathway of pyrrole, pyrazole and tetrazole. Finally, quantum chemical calculation was introduced in this study by density function theory method, which is consistent with the experimental detection.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据