Investigating the Effect of Ultrasonification Time on Transition from Monolithic Porous Network to Size-Tunable Monodispersed Silica Nanospheres via Stöber Method
Publish place: Advanced Ceramics Progress، Vol: 4، Issue: 2
Publish Year: 1397
Type: Journal paper
Language: English
View: 318
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Document National Code:
JR_ACERPT-4-2_006
Index date: 15 October 2019
Investigating the Effect of Ultrasonification Time on Transition from Monolithic Porous Network to Size-Tunable Monodispersed Silica Nanospheres via Stöber Method abstract
Abstract Uniform colloidal monodispersed silica nanoparticles were synthesized via stöber method using ammonia as a basic catalyst. Field Emission Scanning Electron Microscope (FESEM) was confirmed the homogeneous nanospheres. The decrease of TEOS concentration (0.067 to 0.012 mol L-1) and an increase of H2O concentration (3 to 14 mol L-1) at 14 mol L-1 NH3 fixed accelerated the rate of hydrolysis and condensation of [Si (OC2H5)4-X(OH)X]. Using EtOH solvent prevented the aggregation of micelle nuclei and formed spheres with the smallest variance in their size. Hence, the spherical particles were tuned in the range of 10-330 nm. Moreover, the decrement of the ultrasonic time could be changed the nanospheres morphology to the mesoporous structure.
Investigating the Effect of Ultrasonification Time on Transition from Monolithic Porous Network to Size-Tunable Monodispersed Silica Nanospheres via Stöber Method Keywords:
Investigating the Effect of Ultrasonification Time on Transition from Monolithic Porous Network to Size-Tunable Monodispersed Silica Nanospheres via Stöber Method authors
Mahya Nangir
semiconductors, MERC
Abouzar Massoudi
Semiconductor, Merc
Seyed Ali Tayebifard
Semiconductors, MERC