Facile synthesis of hybridized triple-shelled hollow mesoporous organosilica nanoparticles

Background: Multilayer hollow materials have attracted considerable attention as potentially valuable in drug delivery, catalysis, and nanoreactors. The main purpose of this work is to synthesize hybridized triple-shelled hollow mesoporous organosilica nanoparticles (htHMONs) with ethane-, benzene-, and thioether groups. Methods: The nanoparticles are prepared using a surfactant-directed co-assembly process and a following hydrothermal etching strategy. First, hybridized mesostructured organosilica nanoparticles were synthesized via step-by-step adding multiple organosilica in a surfactant solution. The mesostructured organosilica nanoparticles are then transformed into htHMONs by hydrothermal treatment at 160 degrees C for 3 h. Finding: The prepared typical htHMONs possess a uniform diameter (320 nm), independent core (107 nm), and three separate shells (10, 13, and 23 nm from outside to inside). In addition, htHMONs possess typical properties of mesoporous materials, including uniform mesopore (4.20 nm), large specific surface area (SSA) (458 m(2)g(-1)), and huge pore volume (0.82 cm(3)g(-1)). Furthermore, htHMONs with various sizes (190-330 nm) are also prepared by varying the amount of structure-directing agent or volume ratio of water to ethanol. (C) 2021 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Automated summary

In this study, hybridized triple-shelled hollow mesoporous organosilica nanoparticles (htHMONs) with ethane-, benzene-, and thioether groups were successfully synthesized. The htHMONs exhibited a uniform diameter, independent core, and three separate shells. Additionally, the htHMONs possessed typical properties of mesoporous materials, including uniform mesopore, large specific surface area, and large pore volume.