期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 889, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.161657
关键词
Mesoporous; Sb-doped SnO2; Stepwise electrodeposition; Ce-Mn composite interlayer; Controllable preparation
资金
- National Natural Science Foundation of China [22078254, 51874227]
- Shaanxi Province Natural Science Basic Research Project [2019JLM-43, 2018ZDXM-GY-171, 2019JQ-569, 2019JM-549]
- Industrialization Cultivation Project of Shaanxi Provincial Department of Education [20JC025]
- Xi'an Science and Technology Plan Project [201805033YD11CG17 [11]]
A new method for the controlled preparation of mesoporous Ti/Ce-Mn/meso-SnO2-Sb electrodes was established by introducing a Ce-Mn composite interlayer and using electrodeposition, which showed improved performance in phenol degradation and COD removal. This method provides technical support and a theoretical basis for achieving controllable preparation and industrial application of high-performance titanium-based tin electrodes.
In this study, a new method for the controlled preparation of mesoporous Ti/Ce-Mn/meso-SnO2-Sb elec-trodes was established by introducing a Ce-Mn composite interlayer with Pluronic F127 (EO106PO70EO106) as the pore-forming agent and using a stepwise electrodeposition method. The results of the experiment indicated that the mesoporous electrodes prepared using electrodeposition had a larger specific surface area (68.37 m(2) g(-1)), a high oxygen evolution potential (2.16 V) and good mechanical properties. The degradation extent of phenol increased from 72.34% to 91.83% and the Chemical Oxygen Demand (COD) removal extent increased from 59.31% to 81.25% within 120 min. The service life of the Ti/Ce-Mn/ meso-SnO2-Sb electrode was improved nearly 15-fold compared with the conventional Ti/SnO2-Sb electrode produced using the brushing method. The results showed that the stepwise electrodeposition method can refine the coating grains. The introduction of the Ce-Mn intermediate layer increased the bonding between the coating and the Ti substrate. The mesoporous structure provided more in situ catalytic active sites and promoted the generation of center dot OH and catalytic oxidation of phenol. This method provides technical support and a theoretical basis for achieving controllable preparation and industrial application of highperformance titanium-based tin electrodes. (C) 2021 Elsevier B.V. All rights reserved.
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