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Polyoxometalate H 5 PMo 10 V 2 O 40 /SiO 2 (HPMoV/SiO 2 ) nanofibers with a mesoporous structure were fabricated through combined electrospinning and surfactant-directing pore formation technique. These heterogeneous nanofibers were characterized by a wide variety of techniques to show mesoporous structure, high surface area, excellent stability, nanofiber morphology, highly efficient activity and selectivity towards the oxidation of starch and 5-hydroxymethylfurfural (5-HMF) either by H 2 O 2 or by oxygen. POM/SiO 2 nanofibers were suitable for oxidation of starch by H 2 O 2 and oxidation of 5-HMF by O 2 with high efficiency of 0.58 mol per 100 g carboxyl content and 89.2% yield of DFF; these results are comparable with those obtained using homogeneous H 5 PMo 10 V 2 O 40 and HPMoV/SiO 2 without nanofiber morphology. Furthermore, HPMoV/SiO 2 nanofibers could be easily recycled and reused at least ten times with no significant loss of catalytic activity due to their nanofiber morphology.

rsc advances

Fabrication of mesoporous POMs/SiO2nanofibers through electrospinning for oxidative conversion of biomass by H2O2and oxygen