One-step Self Assemble of Cu-TiO2 Heterogeneous Nanoparticles Using a Soft Template

doi:10.3724/SP.J.1077.2012.12188

Abstract

Abstract: Cu-TiO₂ heterostructure nanoparticles were successfully synthesized via a novel one-step self-assemble hydrothermal method using polyethylene glycol as the soft template. The nanospheres were characterized in light of the chemical composition and morphology using X-ray diffraction (XRD) and transmission electron microscope (TEM), respectively. The products are composed of cubic copper and anatase TiO₂. Interfaces between Cu (101) and TiO₂ (111) were observed by HRTEM. In addition, the nanoparticles size could be controlled by adjusting the polymerization degrees of PEG. The accommodations of the particle sizes were mainly caused by Cu nanospheres rather than TiO₂. A possible synthetic mechanism which interprets the formation of Cu-TiO₂ heterogeneous nanoparticles could be ascribed to the hydrogen bonds between Cu(NH₃)²⁺ and PEG. UV-Vis absorption spectra indicated that the prepared product has strong absorbency in the visible region. Therefore, the unique interface nanomaterial could be used as a potential class of the materials platform as visible-light-driven photocatalyst and electrode on enhancing the photoelectric properties of solar cells.

Key words: Cu-TiO₂, PEG, heterogeneous, hydrothermal method, visible-light absorption

CLC Number:

O643

ZHAO Peng-Jun, WU Rong, HOU Juan, CHANG Ai-Min, GUAN Fang, ZHANG Bo. One-step Self Assemble of Cu-TiO₂ Heterogeneous Nanoparticles Using a Soft Template[J]. Journal of Inorganic Materials, 2012, 27(9): 1003-1008.

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One-step Self Assemble of Cu-TiO₂ Heterogeneous Nanoparticles Using a Soft Template

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