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首页> 外文期刊>RSC Advances >Synthesis of dendritic fibrous nanosilica over a cubic core (cSiO(2)@DFNS) with catalytically efficient silver nanoparticles for reduction of nitroarenes and degradation of organic dyes
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Synthesis of dendritic fibrous nanosilica over a cubic core (cSiO(2)@DFNS) with catalytically efficient silver nanoparticles for reduction of nitroarenes and degradation of organic dyes

机译：用催化有效的银纳米颗粒在立方核（CSIO（2）@DFNS）上合成树突纤维纳米粒子，用于减少硝基甲烷和有机染料的降解

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In this study, dendritic fibrous core-shell silica particles having cubic morphology with uniform and vertical nanochannels have been successfully synthesised. The synthesized dendritic fibrous nanosilica over a cubic core (cSiO(2)@DFNS) have been characterized by using various techniques, such as powder X-ray diffraction, TEM, FE-SEM, TGA EDS, FT-IR and N-2 adsorption-desorption experiments. The prepared DFNS particles demonstrated a very high surface area and pore diameter. Amine groups were functionalized on the fibres of cSiO(2)@DFNS and after that silver nanoparticles could be successfully immobilized on amine functionalized cubic silica particles. Due to the presence of a high surface area and a uniform pore diameter, the silver nanoparticle loaded cSiO(2)@DFNS could be successfully employed as an efficient and recoverable catalyst for reduction of toxic aromatic nitro compounds and degradation of organic dyes. Higher catalytic activity of the prepared material could be attributed to its fibrous morphology which could facilitate proper interactions of the reactants molecules with the silver nanoparticles.
机译：在该研究中，已经成功地合成了具有均匀和垂直纳米的立方体形态的树突纤维核 - 壳二氧化硅颗粒。通过使用各种技术，例如粉末X射线衍射，TEM，Fe-SEM，TGA EDS，FT-IR和N-2吸附，在立方核（CSIO（2）@DFN）上的合成的树突式纤维状纳米二硅 - 吸收实验。制备的DFNS颗粒显示出非常高的表面积和孔径。胺基在CSIO（2）@DFN的纤维上官能化，然后在该胺纳米颗粒可以成功地固定在胺官能化立方二氧化硅颗粒上。由于存在高表面积和均匀的孔径，因此可以成功地使用银纳米颗粒的CSIO（2）@DFN作为有效且可收回的催化剂，用于减少有毒芳香硝基化合物和有机染料的降解。制备材料的较高催化活性可归因于其纤维形态，其可促进反应物分子与银纳米颗粒的适当相互作用。

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