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Preparation of nanocrystalline TiO2 porous films from terpineol-ethanol-PEG system

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Abstract

Nanocrystalline TiO2 porous films were prepared by a sol-gel dip coating method from a solution using poly(ethylene glycol) as a template, ethanol as a solvent and terpineol as a highly viscous solvent. The thickness of films increases greatly by increasing the amount of terpineol. However, the overmuch incorporation of terpineol hinders the formation of porous structure and accelerates the crack creation. The crack-free film having a three-dimensionally extended porous structure was obtained at the ethanol/terpineol ratio of 8:1, the film thickness with three depositions being 2.5 μm.

Pretreatment of the precursor at an appropriate temperature also plays an important role in pore formation. Single-phase anatase TiO2 porous films were obtained after calcinations at 550°C for 1 h, and the crystal size increases with an increase in the amount of terpineol. The pore formation mechanism is discussed primarily in relation to the phase separation in the system and self-assembly of PEG.

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Authors and Affiliations

  1. Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials, Tianjin University, 300072, Tianjin, China

    Shaojing Bu, Zhengguo Jin, Xiaoxin Liu, Tao Yin & Zhijie Cheng

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  1. Shaojing Bu
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  2. Zhengguo Jin
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  3. Xiaoxin Liu
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  4. Tao Yin
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  5. Zhijie Cheng
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Correspondence to Zhengguo Jin.

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Bu, S., Jin, Z., Liu, X. et al. Preparation of nanocrystalline TiO2 porous films from terpineol-ethanol-PEG system. J Mater Sci 41, 2067–2073 (2006). https://doi.org/10.1007/s10853-006-8000-y

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  • DOI: https://doi.org/10.1007/s10853-006-8000-y

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