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首页> 外文期刊>RSC Advances >Fabrication of mesoporous POMs/SiO2 nanofibers through electrospinning for oxidative conversion of biomass by H2O2 and oxygen
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Fabrication of mesoporous POMs/SiO2 nanofibers through electrospinning for oxidative conversion of biomass by H2O2 and oxygen

机译：通过电纺制备H 2 O 2 和氧气氧化转化生物质的介孔POMs / SiO 2 纳米纤维

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摘要

Polyoxometalate H5PMo10V2O40/SiO2 (HPMoV/SiO2) 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 H2O2 or by oxygen. POM/SiO2 nanofibers were suitable for oxidation of starch by H2O2 and oxidation of 5-HMF by O2 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 H5PMo10V2O40 and HPMoV/SiO2 without nanofiber morphology. Furthermore, HPMoV/SiO2 nanofibers could be easily recycled and reused at least ten times with no significant loss of catalytic activity due to their nanofiber morphology.
机译：多金属氧酸盐H 5 PMo 10 V 2 O 40 / SiO 2 （HPMoV / SiO 2 ）通过电纺和表面活性剂定向成孔技术相结合，制备了具有中孔结构的纳米纤维。这些异质纳米纤维的特征在于多种技术，它们显示出介孔结构，高表面积，优异的稳定性，纳米纤维形态，高效活性和对淀粉和5-羟甲基糠醛（5-HMF）的H ＜小氧化选择性。 > 2 O 2 或通过氧气。 POM / SiO 2 纳米纤维适用于H 2 O 2氧化淀粉 和O 2 用O 2 氧化5-HMF的效率为每100克羧基0.58？mol，DFF的产率为89.2％;这些结果与使用均质H 5 PMo 10 V 2 < / sub> O 40 和HPMoV / SiO 2 ，而没有纳米纤维形态。此外，HPMoV / SiO 2 纳米纤维可以很容易地回收和再利用至少十次，而不会因纳米纤维的形态而显着降低催化活性。

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