期刊
ACS CATALYSIS
卷 10, 期 17, 页码 10185-10196出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.0c02001
关键词
single atom Ru; metal organic frameworks; NH2-UiO-66; plasma-catalysis; NO; pseudo photocatalysis
资金
- National Key Research and Development Program of China [2016YFC0204100]
- Zhejiang Provincial 151 Talents Program
- Key Project of Zhejiang Provincial Science & Technology Program
- Program for Zhejiang Leading Team of ST Innovation [2013TD07]
- Changjiang Scholar Incentive Program (Ministry of Education, China)
In an attempt to achieve the selective oxidation of NOx, a hybrid catalyst of single-atom-anchored metal organic frameworks (MOF, NH2-UiO-66) and MnO2 was constructed and used in the plasma catalytic process. Isolated Ru sites were successfully implanted into the structure of the MOF by simply stirring the mixed liquor containing both MOF and RuCl3, facilitating plasma discharge, NO/NO2 adsorption, and formation of (OH)-O-center dot radicals. A special oxo-bridged Zr4+-O-Ru3+ was constructed to accelerate electron transfer and continuous proceeding of the reaction. Directional migration of generated electrons from MOF to Ru sites was witnessed when MOF was activated by plasma-induced pseudo-photocatalysis. The total (100%) selective plasma-catalytic oxidation of NOx to NO2- and NO3- was achieved at an SIE of 75.3 J/L. The byproduct O-3 was effectively degraded and utilized by MnO2, facilitating the deep oxidation of NOx. The facile realization of single atoms would be an ideal way to produce MOF-based catalysts with desired performance. Efficiently combining plasma with single atom-decorated MOF catalysts can provide additional prospects for the plasma-catalytic system.
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