A novel and precise ionic self-assembly (ISA) construction strategy for the self-assembly of polymeric quaternary ammonium salts (polyionene) and Anderson-type polyoxometalate (β-Mo₈O₂₆^4–) to form a three-dimensional nanoflower structure was developed successfully and used for oxidative desulfurization (ODS) of fuels for the first time. Furthermore, the morphologies of the self-assembled structures could be precisely regulated by varying the reaction conditions, including the concentrations of the polyionene and temperature. Additionally, nitrogen sorption analysis indicated the porosity with a surface area up to 140 m² g^–1. Remarkably, the nanoflowers showed excellent conversion (98.9%) toward the ODS process with six times of recycling. This could be ascribed to the large amount of active sites dispersed over the relatively high specific area, providing contact with reactants in the ODS process. This facile and innovative fabrication method shed new light on the versatile design and construction of nanostructures.

中文翻译：

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自多金属氧酸盐和聚离子烯自组装的多孔杂化纳米花，用于高效氧化脱硫

一种新颖的和精确的离子自组装（ISA）构建策略为自组装聚合物季铵盐（polyionene）和Anderson型多金属氧酸盐（β-沫₈ ö ₂₆ ^4-），以形成一个三维结构纳米花是成功开发并首次用于燃料的氧化脱硫（ODS）。此外，通过改变反应条件，包括聚离子的浓度和温度，可以精确地调节自组装结构的形态。此外，氮吸附分析表明孔隙度最大为140 m ² g ^–1。引人注目的是，纳米花向ODS工艺转化率极高（98.9％），循环使用了六次。这可以归因于大量活性位点分散在相对较高的比表面积上，从而在ODS过程中提供了与反应物的接触。这种简便而创新的制造方法为纳米结构的多功能设计和构造提供了新的思路。