Synthesis of Janus Mesoporous Silica Nanostructures with Organic–Inorganic Hybrid Components through a Sprout‐Like Growth Method

Abstract In this paper, we have established a simple and generalizable sprout‐like growth method for the facile synthesis of Janus mesoporous silica nanostructures with organic–inorganic hybrid components by using periodic mesoporous organosilica (PMO) nanoparticles as seeds with mesoporous SiO₂ as branches growing on the PMO surface. The morphology of Janus nanostructures with different lengths and numbers of SiO₂ branches can be easily controlled by varying the tetraethoxysilane concentration in the synthesis system. The Janus nanostructures are also easily modified with different SO₃H and NH₂ groups on the SiO₂ branches and PMO cores, respectively, and exhibit excellent catalytic performance in the deacetalization–Henry cascade reaction.