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 SiO 2 as branches growing on the PMO surface. The morphology of Janus nanostructures with different lengths and numbers of SiO 2 branches can be easily controlled by varying the tetraethoxysilane concentration in the synthesis system. The Janus nanostructures are also easily modified with different SO 3 H and NH 2 groups on the SiO 2 branches and PMO cores, respectively, and exhibit excellent catalytic performance in the deacetalization–Henry cascade reaction.