Simultaneously activating molecular oxygen and surface lattice oxygen on Pt/TiO2 for low-temperature CO oxidation
Institute of Process Engineering · Shenyang University of Chemical Technology · +6 more institutions
Abstract
Developing high-performance Pt-based catalysts with low Pt loading is crucial but challenging for CO oxidation at temperatures below 100 °C. Herein, we report a Pt-based catalyst with only a 0.15 wt% Pt loading, which consists of Pt–Ti intermetallic single-atom alloy (ISAA) and Pt nanoparticles (NP) co-supported on a defective TiO2 support, achieving a record high turnover frequency of 11.59 s–1 at 80 °C and complete conversion of CO at 120 °C. This is because the coexistence of Pt–Ti ISAA and Pt NP significantly alleviates the competitive adsorption of CO and O2, enhancing the activation of O2. Furthermore, Pt single atom sites are stabilized by Pt–Ti ISAA, resulting in distortion of the TiO2 lattice within…
Citation impact
- FWCI
- 11.96
- Percentile
- 100%
- References
- 55
Authors
16- TZTengfei Zhang
Institute of Process Engineering
- PZPeng Zheng
Shenyang University of Chemical Technology
- JGJiajian Gao
Agency for Science, Technology and Research
- XLXiaolong Liu
Shanghai Jiao Tong University, Institute of Process Engineering
- YJYongjun JiCorresponding
Beijing Technology and Business University
Topics & keywords
- Oxygen
- Molecular oxygen
- Lattice (music)
- Materials science
- Chemical engineering
- Nanotechnology
- Chemistry
- Chemical physics