A5080387207- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Zeolite Catalysis and Synthesis
- Layered Double Hydroxides Synthesis and Applications
- Clay minerals and soil interactions
- Polyoxometalates: Synthesis and Applications
- Analytical Chemistry and Sensors
Vidyasirimedhi Institute of Science and Technology
2017-2022
Abstract Mesoporous silica (SBA-15 with the BJH pore size of 8 nm) containing anatase nanoparticles in two different titania contents (28 and 65 mass%), which were prepared by infiltration amorphous precursor derived from tetraisopropyl orthotitanate into pore, heat treated air to investigate structural changes (both mesostructure SBA-15 phase pore). The mesoporous particle unchanged treatment up 800 °C. at temperature higher than 1000 °C resulted collapse growth as well transformation...
The preparation of anatase in the cylindrical mesopore SBA-15 (pore size 8 nm) was done by impregnation tetraisopropyl orthotitanate and its subsequent crystallization. without a solvent. Hydrolysis condensation were promoted HCl vapor to encapsulate larger amount titanium oxo species suppress desorption during crystallization anatase. After reaction, shape N2 adsorption isotherm changed significantly, indicating decrease Brunauer-Emmett-Teller surface area from 743 283 m2/g pore volume 1.27...
Precise structural design of a host-guest complex was carried out from the aspects size and location guest (anatase particles), remaining open space host (mesoporous silica). The anatase particles successfully controlled (3, 5 8 nm) during preparation, size-controlled nanoparticles were preferentially encapsulated into mesopores with diameter nm. Due to precise control particles, dependent photoluminescence quantum dots observed for first time. change in porosity mesoporous silica by...
Well-defined nanoparticles of rutile (with the size 5 nm) were successfully prepared by unusual solid-state transformation an amorphous precursor in well-defined nanospace a mesoporous silica template (SBA-15) at room temperature. An aqueous colloidal suspension was obtained dissolution SBA-15 and subsequent pH adjustment. The isolated used for H2 evolution from methanol solution UV irradiation.
Crystallization of well-defined anatase nanoparticles (5 nm) in the mesopore (6 SBA-15 over 400 °C, results high photocatalytic activity for decomposition acetic acid compared with other commercial titanium dioxides.
Rutile nanorods (single and connected nanorods) with diameter similar to the pore size of template (cylindrical mesopore SBA-15 a 8 nm) are prepared by infiltration partially hydrolyzed titanium alkoxide subsequent in situ crystallization reaction HCl vapor at room temperature. Morphological variation is achieved varying loading amount dioxide precursor mesoporous silica. The followed Raman spectra X-ray diffraction patterns. single rutile 5 nm 7 successfully collected dissolving silica...