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首页> 外文期刊>Advanced Functional Materials >Templating Synthesis of SnO2 Nanotubes Loaded with Ag_2O Nanoparticles and Their Enhanced Gas Sensing Properties
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Templating Synthesis of SnO2 Nanotubes Loaded with Ag_2O Nanoparticles and Their Enhanced Gas Sensing Properties

机译：载有Ag_2O纳米粒子的SnO2纳米管的模板合成及其增强的气敏性能

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摘要

A new kind of SnO_2 nanotubes loaded with Ag_2O nanoparticles can be synthesized by using Ag@C coaxial nanocables as sacrificial templates. The composition of silver in SnO_2 nanotubes can be controlled by tuning the compositions of metallic Ag in Ag@C sacrificial templates, and the morphology of tubular structures can be changed by use of nanocables with different thicknesses of carbonaceous layer. This simple strategy is expected to be extended for the fabrication of similar metal-oxide doped nanotubes using different nanocable templates. In contrast to SnO_2@Ag@C nanocables as well as to other types of SnO_2 reported previously, the Ag_2O-doped SnO_2 nanotubes exhibit excellent gas sensing behaviors. The dynamic transients of the sensors demonstrated both their ultra-fast response (1-2 s) and ultra-fast recovery (2—4 s) towards ethanol, and response (1-4 s) and recovery (4-5 s) towards butanone. The combination of SnO_2 tubular structure and catalytic activity of Ag_2O dopants gives a very attractive sensing behavior for applications as real-time monitoring gas sensors with ultra-fast responding and recovering speed.
机译：以Ag @ C同轴纳米电缆为牺牲模板，可以合成新型的负载Ag_2O纳米粒子的SnO_2纳米管。 SnO_2纳米管中银的组成可以通过调节Ag @ C牺牲模板中金属Ag的组成来控制，管状结构的形态可以通过使用具有不同厚度的碳质层的纳米电缆来改变。这种简单的策略有望扩展为使用不同的纳米电缆模板制造类似的掺杂金属氧化物的纳米管。与先前报道的SnO_2 @ Ag @ C纳米电缆以及其他类型的SnO_2相比，掺杂Ag_2O的SnO_2纳米管表现出出色的气体感应性能。传感器的动态瞬变显示了它们对乙醇的超快速响应（1-2 s）和超快速恢复（2-4 s），以及对乙醇的响应（1-4 s）和恢复（4-5 s）丁酮。 SnO_2管状结构与Ag_2O掺杂剂的催化活性相结合，为具有超快响应和恢复速度的实时监测气体传感器提供了非常诱人的传感性能。

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  • 来源
    《Advanced Functional Materials》 |2011年第11期|p.2049-2056|共8页
  • 作者

    Xing Chen; Zheng Guo; Wei-Hong Xu; Hong-Bin Yao; Min-Qiang Li; Jin-Huai Liu; Xing-Jiu Huang; and Shu-Hong Yu;

  • 作者单位

    Research Center for Biomimetic Functional Materials and Sensing Devices Institute of Intelligent Machines Chinese Academy of Sciences Hefei, Anhui 230031, P. R. China;

    Research Center for Biomimetic Functional Materials and Sensing Devices Institute of Intelligent Machines Chinese Academy of Sciences Hefei, Anhui 230031, P. R. China;

    Research Center for Biomimetic Functional Materials and Sensing Devices Institute of Intelligent Machines Chinese Academy of Sciences Hefei, Anhui 230031, P. R. China;

    Division of Nanomaterials and Chemistry Hefei National Laboratory for Physical Sciences at Microscale Department of Chemistry University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Research Center for Biomimetic Functional Materials and Sensing Devices Institute of Intelligent Machines Chinese Academy of Sciences Hefei, Anhui 230031, P. R. China;

    Research Center for Biomimetic Functional Materials and Sensing Devices Institute of Intelligent Machines Chinese Academy of Sciences Hefei, Anhui 230031, P. R. China;

    Research Center for Biomimetic Functional Materials and Sensing Devices Institute of Intelligent Machines Chinese Academy of Sciences Hefei, Anhui 230031, P. R. China;

    Division of Nanomaterials and Chemistry Hefei National Laboratory for Physical Sciences at Microscale Department of Chemistry University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

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