Metallic nanoparticles supported over core-shell metal oxide nanostructures have huge scope in heterogeneous catalysis due to the scope for fine dispersion of the reactive NPs on high surface area material. Silver nanoparticles are supported over Al₂O₃@Fe₂O₃ core-shell nanostructured material through aqueous phase reduction method. Ag-Al₂O₃@Fe₂O₃ core-shell nanoparticles has been characterized through powder X-ray diffraction, ultra high resolution transmission electron microscopy, scanning electron microscopy, N₂ adsorption/desorption isotherm, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy and thermogravimetric analysis. The N₂ adsorption/desorption isotherms of Ag-Al₂O₃@Fe₂O₃ material are classified as typical type IV isotherm with a large H₂ type hysteresis loop for the mesopores. This core-shell mesoporous nanocatalyst showed high catalytic efficiency for the synthesis of 1,4-disubstituted 1,2,3-triazoles in water and acylation of benzyl alcohol under solvent-free conditions. The catalyst is heterogeneous in nature and can be easily recovered and reused without appreciable decrease in its catalytic activity.

负载在核-壳金属氧化物纳米结构上的金属纳米颗粒由于在高表面积材料上反应性NP的精细分散范围而在非均相催化方面具有巨大的范围。通过水相还原法将银纳米颗粒负载在Al ₂ O ₃ @Fe ₂ O ₃核壳纳米结构材料上。通过粉末X射线衍射，超高分辨率透射电子显微镜，扫描电子显微镜，N ₂表征了Ag-Al ₂ O ₃ @Fe ₂ O ₃核壳纳米粒子。吸附/解吸等温线，傅立叶变换红外光谱，紫外可见光谱和热重分析。Ag-Al ₂ O ₃ @Fe ₂ O ₃材料的N ₂吸附/解吸等温线被分类为典型的IV型等温线，其中中等孔具有较大的H ₂型滞后回线。该核-壳介孔纳米催化剂在无溶剂条件下对水中1,4-二取代的1,2,3-三唑的合成和苯甲醇的酰化反应具有很高的催化效率。该催化剂本质上是非均相的，可以容易地回收和再利用而不会明显降低其催化活性。