| 17561430 |
Du K, Fu W, Wei R, Yang H, Xu J, Chang L, Yu Q, Zou G: Ultrasonic-assisted synthesis of highly dispersed MoO3 nanospheres using 3-mercaptopropyltrimethoxysilane. Ultrason Sonochem. 2008 Mar;15(3):233-8. Epub 2007 May 1.
With ultrasonic irradiation as assistance, highly dispersed MoO (3) nanospheres were synthesized using silane coupling agent 3-mercaptopropyltrimethoxysilane HS-(CH (2))(3) Si (OCH (3))(3) (MPTS) as figuration agent. The results of X-ray powder diffractometer (XRD) showed that the precursor was hexagonal molybdenum oxide hydrate (MoO (3).0.55H (2) O). It was converted into orthorhombic MoO (3) after annealed at 400 degrees C for 2h. Transmission electron microscopy (TEM) showed that MoO (3).0.55H (2) O and MoO (3) nanoparticles were spherical with particle-size distribution of ca. 30-80 nm and 25-75 nm, respectively. Results indicated that MPTS and ultrasonic irradiation played important role in formation of highly dispersed MoO (3) nanospheres. X-ray photoelectron spectroscopy (XPS) was also adopted to confirm the growth mechanism. The possible cause of formation was based on dispersion function of ultrasonic irradiation and figuration of MPTS. |
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