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Engineering Dual Active Sites at the Interface between Nanoporous Pt and Nanosized CeO 2 to Enhance Photo‐Thermocatalytic CO Oxidation
Author(s) -
Qi Fugong,
Zhang Jinfeng,
Song Lizhu,
Niu Shiyu,
Yang Zhenwen,
Wang Ying,
Qiu Qiwen
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202100581
Subject(s) - nanoporous , catalysis , materials science , chemical engineering , oxygen , decomposition , inorganic chemistry , nanotechnology , chemistry , organic chemistry , engineering
Effective catalytic oxidation of toxic emissions at low temperatures has great significance on environmental protection. Herein, a novel structure of Pt/CeO 2 catalyst, composed of abundant CeO 2 clusters captured by nanoporous Pt particles, is designed to enhance the photo‐thermocatalytic CO oxidation by boosting the amount of active sites. The nanosized CeO 2 support is fabricated by vacuum thermal decomposition and then the Pt/CeO 2 catalyst with a nanoporous structure is synthesized by a one‐pot solution reduction method in a mild condition. The synthesized catalyst exhibits great low‐temperature CO catalytic oxidation activity, and the temperature for 90% CO conversion is 154 °C, achieving comparable catalytic activity with the single‐atom Pt/CeO 2 catalyst. Abundant dual active sites, in terms of active oxygen absorbed on the oxygen vacancies and spillover from ceria to Pt, and active Pt sites located near the perimeter of the Pt–CeO 2 interface, are formed to improve the photo‐thermocatalytic activity for CO oxidation.