Ultrasonic-assisted synthesis of highly dispersed MoO3 nanospheres using 3-mercaptopropyltrimethoxysilane.
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.
Du
Kai
K
National Laboratory of Superhard Materials, Jilin University, Changchun, 130012 Jilin, PR China.
Fu
Wuyou
W
Wei
Ronghui
R
Yang
Haibin
H
Xu
Jing
J
Chang
Lianxia
L
Yu
Qingjiang
Q
Zou
Guangtian
G
D002621:Chemistry / Q000379:methods; D046529:Microscopy, Electron, Transmission; D008982:Molybdenum / Q000737:chemistry*; D054118:Nanospheres / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D017646:Organosilicon Compounds; D010087:Oxides / Q000737:chemistry; D012821:Silanes / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014050:Toluene / Q000737:chemistry; D014465:Ultrasonics; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
D017646:Organosilicon Compounds; D010087:Oxides; D012821:Silanes; D013438:Sulfhydryl Compounds; D014867:Water; C082290:molybdenum trioxide; D014050:Toluene; D008982:Molybdenum; C102833:(3-mercaptopropyl)trimethoxysilane; C022175:ammonium molybdate