SO3H-functionalized hollow mesoporous carbon sphere prepared by simultaneously achieving sulfonation and hollow structure

Abstract

SO3H-functionalized hollow mesoporous carbon sphere (HMCS–SO3H) was successfully synthesized via a facile strategy using inexpensive resins as precursor in combination with metal oxide template. By the one-step thermal treatment with sulfuric acid, it simultaneously achieved the formation of hollow spherical structure and sulfonation functionalization. HMCS–SO3H catalyst possessed superior mesoporosity, uniform sphere morphology and high acidity, which endowed it excellently catalytic property for esterification of oleic acid. In addition, HMCS–SO3H exhibited prominent stability and reusability.