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首页> 外文期刊>RSC Advances >ZnO@ZnS core/shell microrods with enhanced gas sensing properties
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ZnO@ZnS core/shell microrods with enhanced gas sensing properties

机译：ZnO @ ZnS核心/壳体MICROROD，具有增强的气体传感特性

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摘要

One-dimensional ZnO@ZnS core/shell microrods (MRs) were successfully synthesized by a facile two-step hydrothermal route, employing the low-cost inorganic salt Na2S as a sulfurizing agent. The sulfurizing time plays an important role in the growth of ZnS shells. The thickness of the ZnS shell could be adjusted by controlling the sulfurizing time. This facile surface sulfidation strategy might provide an opportunity for preparing other semiconductor metal oxide-sulfide core/shell nanostructures for a wide range of applications. For investigating the gas sensor application of the prepared ZnO@ZnS core/shell MRs, several common reductive volatile organic pollutants (VOPs) (n-butanol, ethanol, acetone, methanol and ether) were used as the probe gases for the gas sensing measurements. Due to the distinctively core/ shell MR heterostructure and the heterojunction action between the ZnO core and the ZnS shell, the ZnO@ZnS core/shell MR sensor exhibited excellent gas sensing performance including high response, short response and recovery times, and good reproducibility to these VOPs, as well as much enhanced gas sensing performance compared with the bare ZnO MR sensor, demonstrating the potential application as gas sensors. It is believed that the current ZnO@ZnS core/shell MRs will also offer potential applications in other fields such as photocatalysis, electrical devices and optical devices.
机译：一维ZnO @ ZnS核核/壳微孔（MRS）通过容易的两步水热途径成功地合成，采用低成本的无机盐Na2S作为硫化剂。硫化时间在ZNS壳的生长中起着重要作用。可以通过控制硫化时间来调节ZnS壳的厚度。这种容纳表面硫化策略可以提供用于制备其他半导体金属氧化物 - 硫化物核/壳纳米结构的机会，用于各种应用。为了研究制备的ZnO @ ZnS核心/壳MRS的气体传感器应用，使用几种常见的还原性挥发性有机污染物（VOPS）（正丁醇，乙醇，丙酮，甲醇和乙醚）作为气体传感测量的探针气体。由于核心/壳体MR异质结构和ZnO核和ZnS外壳之间的异质结作，ZnO @ ZnS核心/壳MR传感器表现出优异的气体传感性能，包括高响应，响应和恢复时间，以及良好的再现性这些vops以及与裸ZnO MR传感器相比的诸如大量增强的气体传感性能，将潜在应用作为气体传感器。据信，目前的ZnO @ ZnS核心/壳体MRS还将在其他领域提供潜在的应用，例如光电催化，电气设备和光学装置。

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  • 来源
    《RSC Advances》 |2015年第4期|共10页
  • 作者

    Zhang Wei; Wang Shurong; Wang Yanshuang; Zhu Zhenyu; Gao Xueling; Yang Jiedi; Zhang Hong Xin;

  • 作者单位

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Dept Chem Key Lab Adv Energy Mat Chem MOE Tianjin 300071 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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