【摘要】 采用St（?）ber方法制备了单分散的SiO₂微球,并合成了SiO₂/普鲁士蓝纳米复合微球,对其结构进行了X—射线粉末衍射（XRD）、透射电镜（TEM）表征,探讨了FeCl₃的质量分数、溶剂等对复合结构的影响,并且研究了SiO₂/普鲁士蓝复合微球修饰电极的电化学行为。实验结果表明,包覆SiO₂微球的普鲁士蓝是晶态的,较大的FeCl₃质量分数有利于形成连续的包覆,利用三乙醇胺—水—乙醇作溶剂得到的复合结构粒径较用乙醇—水作溶剂得到的复合结构小,用复合微球修饰的电极对过氧化氢的还原有较好的催化作用。更多还原

【Abstract】 Monodipersed SiO₂ microspheres and SiO₂/Prussian Blue nanocomposites were prepared by Stber method,and were characterized by X-ray powder diffraction （XRD） and transmission electron microscope （TEM）.The influences of experimental parameters such as mass fractions of FeCl_,solvent etc.on the composite nanostruetures were investigated.The results indicated that larger mass fraction of FeCl₃ was favor of forming more continuous crystal cladding layers on SiO₂ microspheres and the composites with larger diameters were obtained by using alcohol-water as solvent.SiO₂/Prussian Blue nanocomposites modified on glassy carbon electrode possessed a stable electrocatalytic activity towards hydrogen peroxide.更多还原