Add time:08/14/2019         Source:sciencedirect.com

CeO2 electrospun nanofibers were decorated with a NH (CH2)nNH2+ CH2(CH2)8CH3 then followed by embedding of polyoxometalate H5PMo10V2O40 to give [email protected](n)/CeO2 nanofiber hybrids (where n = 2, 4, 6, 8 and 10). Such designation confirmed no leaching of HPMoV from CeO2 support, interacting between Ce and V in HPMoV to promote the electron transferring, hydrophobicity of the surface resistant to surrounding changes, and the multifunctional sites of redox, base, and Lewis acid favoring for aerobic oxidation. As results, [email protected](n)/CeO2 presented a high efficiency for aerobic oxidation of 5-hydroxymethylfurfural (HMF) targetting to 2,5-diformylfuran (DFF) with almost 100% conversion and 95.3% yield. No structural and morphologic changes or leaching of POMs from CeO2 electrospun nanofiber occurred during the reaction which could be recycled up to ten-times.

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