期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 269, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2020.118755
关键词
Photothermocatalytic degradation; VOCs; ARCeO(2); Oxygen vacancy; Coke; Resistance
资金
- Key-Area Research and Development Program of Guangdong Province [2019B110206002]
- National Natural Science Foundation of China [41731279, 41415025]
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01Z032]
- Leading Scientific, Technical and Innovation Talents of Guangdong special support program [2016TX03Z094]
- China Postdoctoral Science Foundation [2018M630925]
Carbon deposit during the catalytic oxidation of volatile organic compounds (VOCs) is a key factor to restrict long-term stability of catalysts. Herein, a modified ordered porous catalyst with high coke-resistance performance was developed by introducing oxygen vacancies (OVs) into CeO2 through simple redox and steam treatment (ARCeO(2)), and applied in efficiently photothermocatalytic degradation of VOCs. Abundant OVs in ARCeO(2) leads to enhanced light absorption, improved charge separation and increased reactive oxygen generation, and then promote its photothermocatalytic performance. Moreover, no obvious decrease was observed in the photothermocatalytic activity of ARCeO(2) at 200 degrees C for 25 h reaction. Its superior photothermocatalytic stability can be attributed to the less intermediates and limited coke accumulation onto ARCeO(2) . This work provides a facile and cost-effective strategy for the design and fabrication of CeO2 catalyst with strong coke-resistance potential and highlights the significance of OVs engineering for improving the photothermocatalytic performance of VOCs degradation.
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