In situ synthesis of mesoporous CdS nanoparticles in ternary cubic phase lyotropic liquid crystal

Document Type

Article

Publication Date

1-1-2003

Abstract

An in situ technique for the synthesis of CdS nanoparticles in a ternary lyotropic cubic phase liquid crystal has been carried out. The extremely viscous cubic phase liquid-crystal system consists of poly(oxyethylene)10 nonly phenol ether as non-ionic surfactant, octane as oil phase and an aqueous phase containing reactant ions (Cd2+ and S2-). Thioacetamide (TAA) has been utilized as a source for slow release of sulfur in the in situ synthesis of CdS. Rheological results show that CdS nanoparticle growth did not disrupt the structure of the cubic phase liquid-crystal system. This indicates that homogenous synthesis of CdS in the liquid crystal had been achieved. The final products were characterized using X-ray photoelectron spectroscopy, thermal gravimetric analysis, transmission electron microscopy and UV-visible spectroscopy. It was found that the CdS nanoparticles formed have a mesoporous structure with a size dependent on the TAA decomposition aging time.

Keywords

Hydrocarbons Ions Liquid crystals Mesoporous materials Nanostructured materials Polyethylene glycols Rheology Sulfur Surface active agents Synthesis (chemical) Thermogravimetric analysis X ray photoelectron spectroscopy Mesoporous cadmium sulfide nanoparticles Nonyl phenol ether Octane Ternary cubic phase lyotropic liquid crystals Thioacetamide Semiconducting cadmium compounds

Publication Title

Applied Physics A

ISSN

0947-8396

Divisions

PHYSICS

Volume

76

Issue

4

Publisher

Springer

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