Towards Si@SiO2 core-shell, yolk-shell, and SiO2 hollow structures from Si nanoparticles through a self-templated etching-deposition process

摘要

Si@SiO2 core-shell, yolk-shell, and SiO2 hollow structures can be obtained when Si nanoparticles are simply treated by ammonia-water-ethanol solution at room temperature. Their formation mechanism is attributed to the self-templated etching-deposition processes.