Nucleation and growth of mixed vanadium-titanium oxo-alkoxy nanoparticles in sol-gel synthesis
نویسندگان
چکیده
The mixed vanadium-titanium oxo-alkoxy (VTOA) nanoparticles were synthesized via sol-gel method in a chemical reactor with ultra-rapid micromixing. nucleation and growth kinetics particles size, followed by the static/dynamic light scattering methods, quite different from those of pure titanium (TOA) vanadium (VOA) species. It was shown that TOA species appear first serve to be centres attraction for hydrolysed VOA at stage. However, content above 20 mol% large imprison sub-nucleus prohibiting nucleus appearance. model analysis VTOA induction validated significant increase size an precursor concentration. results support new paradigm process describing profound restructuring oxometallic during assembling
منابع مشابه
Nucleation and growth kinetics of zirconium-oxo-alkoxy nanoparticles.
Nucleation and growth of zirconium-oxo-alkoxy (ZOA) nanoparticles were studied in a sol-gel process in n-propanol solution at a hydrolysis ratio H between 1.0 and 2.7 and zirconium-n-propoxyde precursor concentrations between 0.10 and 0.15 mol l(-1). The chemical transformations were conducted in quasi-perfect micromixing conditions (Damköhler number Da ≤ 1) and the nanoparticle size evolution ...
متن کاملSol-Gel-Prepared Nanoparticles of Mixed Praseodymium Cobaltites-Ferrites
Two series of nanocrystalline powders of PrCo1 - x Fe x O3 (x = 0.1, 0.3, 0.5, 0.7 and 0.9) of high purity were obtained by sol-gel citrate method at 700 and 800 °C. The formation of continuous solid solution with an orthorhombic perovskite structure (sp. group Pbnm) was observed. A peculiarity of the PrCo1 - x Fe x O3 solid solution is the lattice parameter crossovers, which occurred at certai...
متن کاملSynthesis and Characterization of ZnO Nanoparticles Using Sol-gel Process
In the Present work structural, morphological and compositional properties of ZnO nanopowders synthesized using Zinc nitrate and NaOH using sol-gel process were reported. The synthesized nanopowders were further analyzed using X-Ray Diffraction (XRD), Scanning electron microscopy (SEM) and Fourier Transform Infrared (FTIR) spectroscopic characterizations. Crystalline size and Lattice strain det...
متن کاملSynthesis of zirconium carbide nanoparticles by sol-gel method and determination of powder characteristics
In this study, zirconium carbide nanoparticles were synthesized by the sol-gel method in the alcoholic system. The sol was prepared in a three-component alkoxide-water-alcohol system based on the chemical sol-gel process under acidic conditions and at pH = 5. Zirconium n-propoxide, furfuryl alcohol were used as raw materials. After the hydrolysis process and formation of the gel, the initial po...
متن کاملSol-Gel Synthesis of Zinc Oxide (ZnO) Nanoparticles: Study of Structural and Optical Properties
Zinc oxide (ZnO) nanopowders were synthesized by the sol–gel method from an ethanol solution of zinc sulfate heptahydrate in the presence of diethylene glycol surfactant. Detailed structural and microstructural investigations were carried out using x-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FE-SEM), Fourier tra...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Colloids and Surfaces A: Physicochemical and Engineering Aspects
سال: 2021
ISSN: ['1873-4359', '0927-7757']
DOI: https://doi.org/10.1016/j.colsurfa.2020.125636