Hollow periodic mesoporous organosilica nanospheres by a facile emulsion approach
作者： Xiaobo Ma , Junjie Zhang , Meng Dang , Jin Wang , Zenzen Tu
DOI: 10.1016/J.JCIS.2016.04.026
关键词:
摘要: Periodic mesoporous organosilicas (PMOs) with homogeneously incorporated organic groups, highly ordered mesopores, and controllable morphology have attracted increasing attention. In this work, one-step emulsion approach for preparation of hollow periodic organosilica (HPMO) nanospheres has been established. The method is intrinsically simple does not require any sacrificial templates, corrosive toxic etching agents. obtained HPMO high surface area (∼950m(2)g(-1)), accessible mesochannels (∼3.4nm), large pore volume (∼3.96cm(3)g(-1)), condensation degree (77%), diameter (∼560nm), chamber size (∼400nm), shell thickness (∼80nm). Furthermore, cytotoxicity show the cell viability higher than 86% after incubating at a concentration up to 1200μgmL(-1) 24h. hemolysis lower 1.1% concentrations ranging from 10 2000μgmL(-1). make great promise future biomedical applications.
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