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<p>In this study, we developed a series of Fe-TiO<sub>2</sub>/Ti monolithic catalysts via a scalable multistep synthesis approach. It can be revealed that Fe loading can be precisely controlled by tuning the ion exchange duration, with comprehensive characterization confirming successful Fe incorporation into the TiO<sub>2</sub> lattice. Compared to pristine TiO<sub>2</sub>/Ti, the Fe-doped catalysts exhibit significantly increased concentrations of chemisorbed oxygen species and oxygen vacancies, correlating with enhanced catalytic performance. The optimized Fe-TiO<sub>2</sub>/Ti catalyst achieves 100% CO conversion at ~ 258&#xa0;°C, showing a marked improvement over the undoped counterpart. Furthermore, unlike conventional surface modifications of TiO<sub>2</sub> supports, lattice doping provides an intrinsic solution to the persistent challenge of active component detachment, significantly enhancing the material's practical applicability. This work not only provides a facile yet effective ion doping strategy but also advances fundamental understanding of catalyst design, offering new avenues for developing robust catalytic systems.</p>

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In situ growth of Fe-doped TiO2 on flexible Ti mesh for CO oxidation

  • 期刊论文

  • 发表日期：

    2025年7月22日

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  • Xinyue Tang,
  • Liuduan Wen,
  • Cong Cui,
  • Zizhuang Zhang,
  • Yulian Wang,
  • Yulin Cheng,
  • Baodan Liu

摘要

In this study, we developed a series of Fe-TiO2/Ti monolithic catalysts via a scalable multistep synthesis approach. It can be revealed that Fe loading can be precisely controlled by tuning the ion exchange duration, with comprehensive characterization confirming successful Fe incorporation into the TiO2 lattice. Compared to pristine TiO2/Ti, the Fe-doped catalysts exhibit significantly increased concentrations of chemisorbed oxygen species and oxygen vacancies, correlating with enhanced catalytic performance. The optimized Fe-TiO2/Ti catalyst achieves 100% CO conversion at ~ 258 °C, showing a marked improvement over the undoped counterpart. Furthermore, unlike conventional surface modifications of TiO2 supports, lattice doping provides an intrinsic solution to the persistent challenge of active component detachment, significantly enhancing the material's practical applicability. This work not only provides a facile yet effective ion doping strategy but also advances fundamental understanding of catalyst design, offering new avenues for developing robust catalytic systems.