Preparation of Necklace-like TiO2 Nanoparticles Templated with L-Phenylalanine Derivative Based on Supramolecular Hydrogel

doi:10.3724/SP.J.1077.2008.00393

Abstract

Abstract: The necklace-like TiO₂ nanoparticles were prepared by a sol-gel polymerization and subsequent calcinations. The aggregates of hydrogelator, tetraethylammonium 3-{[(2S)-2-(octadecylamino)-3-phenylpropanoyl] amino} butyrate (abbreviated as TC₁₈PheBu) in aqueous solution were used as the templates and tetrabutyl titanate (Ti(OBu)4) was used as the source of titanium in the preparation of necklace-like TiO2 nanoparticles. The images of FE-SEM indicated that the average diameters of TiO₂ nanoparticles were in the range of 200--400nm. The formation mechanism of necklace-like TiO₂ nanoparticles was discussed
by FT-IR analysis, which indicated that the necklace-like TiO₂ nanoparticles were formed through the electrostatic interaction between positive charged TC₁₈PheBu and negative charged oligomers formed by the hydrolysis of Ti(OBu)4. The XRD analysis indicated that the TiO₂ nanoparticles were in the form of anatase crystals.

Key words: supramolecular hydrogel, template method, pearl-necklace-like TiO₂ particles

CLC Number:

TB321
TL352

FU Xin-Jian,WANG Ning-Xia,ZHANG Sheng-Zu,WANG Hong,YANG Ya-Jiang. Preparation of Necklace-like TiO₂ Nanoparticles Templated with L-Phenylalanine Derivative Based on Supramolecular Hydrogel[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00393.

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Preparation of Necklace-like TiO₂ Nanoparticles Templated with L-Phenylalanine Derivative Based on Supramolecular Hydrogel

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