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首页> 外文期刊>Advanced Functional Materials >Thin-Wall Assembled SnO_2 Fibers Functionalized by Catalytic Pt Nanoparticles and their Superior Exhaled- Breath-Sensing Properties for the Diagnosis of Diabetes
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Thin-Wall Assembled SnO_2 Fibers Functionalized by Catalytic Pt Nanoparticles and their Superior Exhaled- Breath-Sensing Properties for the Diagnosis of Diabetes

机译：催化Pt纳米粒子功能化的薄壁组装SnO_2纤维及其优越的呼气呼吸特性用于糖尿病的诊断

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摘要

Hierarchical SnO_2 fibers assembled from wrinkled thin tubes are synthesized by controlling the microphase separation between tin precursors and polymers, by varying flow rates during electrospinning and a subsequent heat treatment. The inner and outer SnO_2 tubes have a number of elongated open pores ranging from 10 nm to 500 nm in length along the fiber direction, enabling fast transport of gas molecules to the entire thin-walled sensing layers. These features admit exhaled gases such as acetone and toluene, which are markers used for the diagnosis of diabetes and lung cancer. The open tubular structures facilitated the uniform coating of catalytic Pt nanoparticles onto the inner SnO_2 layers. Highly porous SnO_2 fibers synthesized at a high flow rate show five-fold higher acetone responses than densely packed SnO_2 fibers synthesized at a low flow rate. Interestingly, thin-wall assembled SnO_2 fibers functionalized by Pt particles exhibit a dramatically shortened gas response time compared to that of un-doped SnO_2 fibers, even at low acetone concentrations. Moreover, Pt-decorated SnO_2 fibers significantly enhance toluene response. These results demonstrate the novel and practical feasibility of thin-wall assembled metal oxide based breath sensors for the accurate diagnosis of diabetes and potential detection of lung cancer.
机译：由起皱的细管组装而成的分级SnO_2纤维是通过控制锡前体与聚合物之间的微相分离，通过在电纺丝过程中改变流速以及随后进行热处理而合成的。内和外SnO_2管沿纤维方向的长度范围在10 nm至500 nm之间，具有多个细长的开孔，可将气体分子快速传输到整个薄壁传感层。这些特征允许呼出的气体，例如丙酮和甲苯，它们是用于诊断糖尿病和肺癌的标志物。开放的管状结构有助于将催化性Pt纳米颗粒均匀地涂覆到内部SnO_2层上。以高流速合成的高度多孔的SnO_2纤维显示出比以低流速合成的致密堆积的SnO_2纤维高五倍的丙酮响应。有趣的是，即使在低丙酮浓度下，与未掺杂的SnO_2纤维相比，被Pt颗粒官能化的薄壁组装SnO_2纤维显示出显着缩短的气体响应时间。而且，Pt装饰的SnO_2纤维显着增强了甲苯的响应。这些结果证明了基于薄壁组装的基于金属氧化物的呼吸传感器对于糖尿病的准确诊断和肺癌潜在检测的新颖性和实用性。

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  • 来源
    《Advanced Functional Materials》 |2013年第19期|2357-2367|共11页
  • 作者

    Jungwoo Shin; Seon-Jin Choi; Inkun Lee; Doo-Young Youn; Chong Ook Park; Jong-Heun Lee; Harry L. Tuller; Il-Doo Kim;

  • 作者单位

    Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    Department of Materials Science and Engineering Korea University Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea;

    Department of Materials and Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA;

    Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;

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