Precise control of the size,composition,and assembly process of each component is expected to play a key role in the construction of integrated functional nanostructures.Herein we report a unique sacrificial template ...Precise control of the size,composition,and assembly process of each component is expected to play a key role in the construction of integrated functional nanostructures.Herein we report a unique sacrificial template method for the fabrication of noble metal@silica hollow microspheres with noble metal(Au,Pt,and Pd)nanoparticles uniformly immobilized on the inner surfaces of silica hollow microspheres.A polystyrene microsphere as a sacrificial template is used to play dual roles,creating a cavity inside the silica microsphere and introducing noble metal nanoparticles into the silica microsphere.Distinct from the reported sacrificial template methods,this method takes advantage of a thermodynamic effect to easily deposit the noble metal nanoparticles with different sizes and compositions onto the template microspheres.In addition,taking Au@silica hollow microspheres for example,they exhibit excellent catalytic activity and recyclability for the reduction of p-nitrophenol(4-NP)by NaBH_(4).展开更多
基金the National Natural Science Foundation of China(no.21204030 and 21206052)MOE&SAFEA for the 111 Project(B13025)for their financial support.
文摘Precise control of the size,composition,and assembly process of each component is expected to play a key role in the construction of integrated functional nanostructures.Herein we report a unique sacrificial template method for the fabrication of noble metal@silica hollow microspheres with noble metal(Au,Pt,and Pd)nanoparticles uniformly immobilized on the inner surfaces of silica hollow microspheres.A polystyrene microsphere as a sacrificial template is used to play dual roles,creating a cavity inside the silica microsphere and introducing noble metal nanoparticles into the silica microsphere.Distinct from the reported sacrificial template methods,this method takes advantage of a thermodynamic effect to easily deposit the noble metal nanoparticles with different sizes and compositions onto the template microspheres.In addition,taking Au@silica hollow microspheres for example,they exhibit excellent catalytic activity and recyclability for the reduction of p-nitrophenol(4-NP)by NaBH_(4).
