Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 10, Issue 18, Pages 6257-6265Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cy01085e
Keywords
-
Categories
Funding
- China Postdoctoral Science Foundation [2019M653184]
- National Natural Science Foundation of China (NSFC) [21677179]
- Guangdong Basic and Applied Basic Research Foundation [2020A1515010865]
- Fundamental Research Funds for the Central Universities [20lgjc03, 20lgpy95]
Ask authors/readers for more resources
Formaldehyde is a main indoor pollutant and its removal is essential to protect human health and meet strict environmental regulations. It is highly desirable to develop efficient catalysts to achieve complete oxidation of formaldehyde at room temperature. However the preparation of catalysts generally requires harsh conditions and long times. In this work, a quick, mild and efficient alternative method was employed to prepare a Pd/CeO(2)catalyst and adjust its characteristicsvianon-thermal plasma activation. The plasma activation could obtain tunable active oxygen species content since it can change the metallic Pd percentage, oxygen vacancy concentration and Pd particle size simultaneously. A close relationship between the active oxygen species content and HCHO catalytic oxidation activity was established. The Pd/CeO(2)catalyst activated by plasma for only 2 minutes showed the best conversion of over 76% due to its highest active oxygen species amount. The results ofin situDRIFTS of HCHO oxidation over the Pd/CeO(2)catalyst suggested that the intermediates mainly included formate, dioxymethylene and polyoxymethylene species. The high content of active oxygen species could promote the rate determining step of formate species oxidation. This study provides a quick and efficient catalyst activation method for HCHO catalytic oxidation at room temperature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available