Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation
作者：
Hongtai Zhu;Wenge Qiu*;Rui Wu;Kai Li;Hong He*
通讯作者：
Wenge Qiu;Hong He
作者机构：
Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, China
Advanced E-Catal. Corporation, Ltd., Beijing 100025, China
通讯机构：
Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, China
Advanced E-Catal. Corporation, Ltd., Beijing 100025, China
语种：
英文
期刊：
环境科学学报(英文版)
ISSN：
1001-0742
年：
2025
卷：
148
页码：
57-68
摘要：
The expandable graphite (EG) modified TiO2 nanocomposites were prepared by the high shear method using the TiO2 nanoparticles (NPs) and EG as precursors, in which the amount of EG doped in TiO2 was 10 wt.%. Followed by the impregnation method, adjusting the pH of the solution to 10, and using the electrostatic adsorption to achieve spatial confinement, the Pt elements were mainly distributed on the exposed TiO2, thus generating the Pt/10EG-TiO2–10 catalyst. The best CO oxidation activity with the excellent resistance to H2O and SO2 was obtained over the Pt/10EG-TiO2–10 catalyst: CO conversion after 36 hr of the reaction was ca. 85% under the harsh condition of 10 vol.% ...
