Block copolymer templated synthesis of mesoporous WO3/carbon nanocomposites
Block copolymer templated synthesis of mesoporous WO3/carbon nanocomposites
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DOI：
10.1007/s10853-022-07564-3
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发表时间：
2022-08-03
影响因子：
4.5
通讯作者：
Bastakoti, Bishnu Prasad
中科院分区：
文献类型：
--
作者：
Bentley, John;Bastakoti, Bishnu Prasad
以PS-PVP-PEO聚合物为模板合成了介孔WO 3/炭复合材料。分子溶解在THF中的聚合物自组装成带正电荷的球形胶束后，加入HCl。带负电荷的钨源（WO 42-）与带正电荷的聚合物胶束强烈结合。在溶剂蒸发过程中，葡萄糖、WO 42-和胶束组装成介观结构。复合材料的碳化导致介孔WO 3/碳纳米复合材料。一个聚合物胶束具有独特的块致孔剂（聚苯乙烯），反应位点（聚乙烯基吡啶），和稳定剂（环氧乙烷），使该系统例外的一锅法合成介孔纳米复合材料。通过动态光散射、扫描电子显微镜、透射电子显微镜、傅里叶变换红外光谱、X射线光电子能谱和拉曼光谱对复合材料进行了表征。电化学研究表明，该复合材料提供381 F.g（-1）的电容与96%的保留在1 M H2SO 4。
We synthesize mesoporous WO3/carbon composites with PS-PVP-PEO polymeric template. The molecularly dissolved polymer in THF self-assembles in positively charged spherical micelles upon the addition of HCl. The negatively charged tungsten source (WO42-) binds strongly with positively charged polymeric micelles. Glucose, WO42-, and micelles are assembled as a mesostructure during solvent evaporation. The carbonization of composites leads to mesoporous WO3/carbon nanocomposites. A polymeric micelle having unique blocks for porogen (polystyrene), reaction site (polyvinyl pyridine), and stabilizer (ethylene oxide) makes the system exceptional to synthesize mesoporous nanocomposites in a one-pot method. The nanocomposites were characterized by dynamic light scattering, scanning electron microscopy, transmission electron microscopy, Fourier transforms infrared spectroscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical studies reveal that the composites deliver 381 F.g(-1) capacitance with 96% retention in 1 M H2SO4.