Herein, a pH-switchable Pickering interfacial biocatalysis (PIB) system is proposed and applied to a solvent-free biphasic biocatalysis. The oil-in-water emulsion was stabilized by amine-functionalized hollow mesoporous silica nanospheres (HMSS-N), which is functioned as emulsifiers of PIB and carriers of lipase AYS. The smart emulsifiers exhibited switch of the surface wettability behaviors in response to abrupt changes of pH. Under the optimality conditions, the immobilized lipase loading amount, activity, and expressed activity were 174.1 mg...
