Microwave-hydrothermal synthesis and characterization of zirconium substituted SBA-15 mesoporous silica

Article Abstract:

Zirconium substituted mesoporous SBA-15 molecular silica with Si/Zr ratios of 10, 20, 40, and 80 is successfully synthesized at 373 K under microwave-hydrothermal conditions within about 2 h. The results reveal that microwave-assisted synthesis is an ideal approach to prepare Zr-substituted SBA-15, which is expected to be useful as a selective oxidation catalyst for reactions involving large molecules.

Oxidation-reduction reaction, Oxidation reduction reactions, Microwaves

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Sol-gel preparation and photoluminescence of size controlled germanium nanoparticles embedded in a SiO2 matrix

Article Abstract:

Germanium nanoparticles of different sizes in silica glasses are prepared via a sol-gel method, using Cl3-Ge-C2H4-COOH and Si (OC2H5)4 as the starting materials. It is observed that the size of the germanium nanoparticles decreases as the heat-treatment time in a H2 gas atmosphere increases, thus the optical absorption edge shifts to higher energies.

Industrial Gas Manufacturing, Industrial gases, Hydrogen, Germanium, Influence, Silicon dioxide

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Novel zirconium-titanium phosphates mesoporous materials for hydrogen production by photoinduced water splitting

Article Abstract:

Syntheses of mesoporous zirconium-titanium phosphates (ZTP) are described under a wide range of synthetic parameters. The results of photocatalytic decomposition of water for the hydrogen generation suggest that mesoporous ZTP materials are liable for the production of photocatalysts.

Analysis, Water, Decomposition (Chemistry)

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