Nanostructured Sheets of Ti[BOND]O Nanobelts for Gas Sensing and Antibacterial Applications

Authors

  • Yanmin Wang,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Guojun Du,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Hong Liu,

    Corresponding author
    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
    • State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China).
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  • Duo Liu,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Shubin Qin,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Na Wang,

    1. Department of Applied Physics, Chongqing University Chongqing 400044 (P.R.China)
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  • Chenguo Hu,

    1. Department of Applied Physics, Chongqing University Chongqing 400044 (P.R.China)
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  • Xutang Tao,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Jun Jiao,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Jiyang Wang,

    1. State Key Laboratory of Crystal Materials Center of Bio & Micro/Nano Functional Materials School of Physics and Microelectronics, Shandong University 27 Shandanan Road, Jinan 250100 (P.R.China)
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  • Zhong Lin Wang

    Corresponding author
    1. School of Materials Science and Engineering Georgia Institute of Technology Atlanta, GA 30332–0245 (USA)
    • School of Materials Science and Engineering Georgia Institute of Technology Atlanta, GA 30332–0245 (USA)
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  • This research was supported by an NSFC grant (50572052), the National High Technology Research and Development Program of China (863 Program, No. 2006AA30106), the 973 Program of China (G2004CB619002), and the Program of Introducing Talents of Discipline to Universities in China (111 program). We also acknowledge support from US NSF.

Abstract

Three types of Ti[BOND]O-compound-based nanobelts (Na2Ti3O7, H2Ti3O7, TiO2) are prepared from commercial TiO2 powders via an alkaline hydrothermal process. Nanostructured sheets based on the as-synthesized nanobelts are prepared using a paper-making process. The nanobelts are connected with hydrogen bonds or/and bridge oxygen atoms and packed together, forming a paperlike porous network structure, with an average pore size of ∼500 nm. The electrical properties and gas sensing of the nanostructured sheets are demonstrated to display sensitivity down to sub-ppb levels. H2Ti3O7 nanobelts decorated with Ag nanoparticles have also been applied as an antibacterial agent.

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