Structural investigations of hybrid TiO 2/CNTs nanomaterials

Kuan Nan Lin, Wei Jen Liou, Hong Ming Lin, Tsung Yeh Yang, Chung Kwei Lin

研究成果: 雜誌貢獻文章同行評審

5 引文 斯高帕斯(Scopus)

摘要

In the present study, pure TiO 2 and hybrid TiO 2/CNTs nanomaterials are prepared by sol gel technique. Post heat treatment is performed at 600, 800, and 1000 °C, respectively. The structural characterizations are performed by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction and synchrotron X-ray absorption spectroscopy techniques. Experimental results show that anatase to rutile transformation can be observed for pure TiO 2 nanomaterials after heat treatment at 800 °C. The anatase to rutile transformation is inhibited by carbon nanotubes, and therefore only anatase phases for TiO 2 nanomaterials can be observed in the hybrid nanomaterials. The 600 °C hybrid nanomaterials show a microstructure with CNTs covered by continuous TiO 2 films of numerous small nanoparticles. After applying heat treatment on the hybrid nanomaterials at 1000 °C, only TiO 2 nanoparticles adhere individually to the uncovered CNTs. Though all hybrid nanomaterials exhibit anatase TiO 2, synchrotron X-ray absorption spectra investigations reveal that hybrid TiO 2/CNTs exhibit different electronic properties as compared to those of pure TiO 2 nanomaterials.
原文英語
頁(從 - 到)3155-3161
頁數7
期刊Journal of Nanoscience and Nanotechnology
10
發行號5
DOIs
出版狀態已發佈 - 五月 2010
對外發佈

ASJC Scopus subject areas

  • 凝聚態物理學
  • 化學 (全部)
  • 材料科學(全部)
  • 生物工程
  • 生物醫學工程

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