Precursor hydrolysis method allows for mass production of SiO₂ multi-shell hollow spheres

Due to the characteristics of porous walls and empty spaces, SiO2 multi-shell hollow spheres (MHSs) can regulate mass, energy transfer, and chemical reactions, making them promising for applications in confinement catalysis, energy storage, chemical separation, and drug release. However, scaling up the production of SiO2 MHSs from laboratory synthesis to industrial production remains a significant challenge.