Design and synthesis of hollow Ce/Zr-UiO-66 nanoreactors for synergistic and efficient catalysis
JOURNAL OF SOLID STATE CHEMISTRY(2022)
摘要
Hollow MOFs nanoreactors with controlled shape, size, pore volume, and shell thickness have been considered as emerging materials for a variety of applications. Selecting environmentally friendly and cheap colloidal carbon (CNs) as the template, bimetallic hollow Ce/Zr-UiO-66 nanoreactors were synthesized. The PXRD, TEM, EDS and other characterization analysis proved that hollow structure was formed, accompanied with incorporating of Ce(III) in UiO-66 and the crystal morphology was good. Furthermore, bimetallic hollow Ce/Zr-UiO-66 was studied as a catalyst to catalyze the conversion of furfural (FF) to furfuryl alcohol (FAL) without exogenous hydrogen. The results showed that the hollow structure and bimetallic UiO-66 was beneficial to the catalytic reaction by modulating the ratio of Ce(III) and Zr(IV). Among then, the 1:4 ratio of Ce(III) and Zr(IV) displayed good catalytic activity, the conversion rate of FF was 95% and selectivity of FAL was 94%. This study opens a new avenue for further rational design and construction of well-performing MOFs nanoreactors.
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关键词
Metal-organic frameworks,Catalysis,Nanoreactor,UiO-66
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