In-situ growth of large-area monolithic Fe₂O₃/TiO₂ catalysts on flexible Ti mesh for CO oxidation

Xinyue Tang^1,2，Junchao Wang³，Jing Li³，Xinglai Zhang³，Peiqing La⁴，Xin Jiang⁵，Baodan Liu⁶

1. Shenyang National Laboratory for Materials Science , Institute of Metal Research , Chinese Academy of Sciences2. School of Materials Science and Engineering, University of Science and Technology of China3. Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research(IMR) , Chinese Academy of Sciences(CAS)4. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology5. Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research(IMR), Chinese Academy of Sciences(CAS)6. Shenyang National Laboratory for Materials Science(SYNL) , Institute of Metal Research(IMR), Chinese Academy of Sciences(CAS)

摘 要：In this study, we reported the in-situ fabrication of a series of Fe₂O₃/TiO₂ monolithic catalysts on flexible Ti mesh via plasma electrolytic oxidation process, hydrothermal reaction and chemical bath deposition（CBD） method. The morphology tailoring of Fe₂O₃ nanostructures finds that Fe₂O₃ nanosheets supported on TiO₂ exhibit superior catalytic performance with a complete oxidation of CO at 260°C. The catalytic stability test indicates that the in-situ grown Fe₂O₃/TiO₂ catalysts own outstanding performance for continuous CO oxidation due to the strong substrate adhesion without mass loss. The microstructures and interfaces of Fe₂O₃/TiO₂ catalysts are well studied using series of characterization techniques. The in-situ preparation strategy of metal oxide catalysts in this work will open up more opportunities for the rational design of variety of monolithic catalysts used for CO oxidation, de-NOx, three-way catalysis and other related application in industry.

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