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Synthesis and high formaldehyde sensing properties of quasi two-dimensional mesoporous ZnSnO3 nanomaterials

机译：准二维介孔ZnSNO3纳米材料的合成与高甲醛感应性能

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摘要

Quasi two-dimensional (2D) mesoporous ZnSnO3 nanomaterials (QTMZNS) were synthesized by a simple template-free hydrothermal method. The as-prepared products were characterized by TEM, SEM, XRD, TG/DTA, and FTIR. The results showed that the precursor was a mixture of Zn-5(OH)(6)(CO3)(2) and ZnSnO3 in the hydrothermal process, and the high purity QTMZNS were obtained by calcination combined with subsequent washing of 20 wt% NH4Cl solutions. A possible growth process and mechanism of the quasi 2D mesoporous structure was proposed. Gas sensing properties of QTMZNS were investigated, and the QTMZNS-based sensors exhibited excellent gas sensing properties. When exposed to 100 ppm formaldehyde vapors, the response sensitivity is 45.8, and the concentration limit can reach as low as 0.2 ppm of formaldehyde. All these results are much better than those reported so far, which will have great potential applications for practical air quality monitoring.
机译：通过简单的无模板水热法合成准二维（2D）中孔ZnSNO3纳米材料（QTMZNS）。 通过TEM，SEM，XRD，TG / DTA和FTIR的特征在于制备的产品。 结果表明，前体是水热法中Zn-5（OH）（6）（2）（2）和ZnSNO 3的混合物，通过煅烧得到高纯度QTMZNS，随后与20wt％NH 4 Cl的洗涤结合 解决方案。 提出了可能的增长过程和准2D中孔结构的机制。 研究了QTMZNS的气体传感性能，基于QTMZNS的传感器表现出优异的气体传感性能。 当暴露于100ppm甲醛蒸气时，响应敏感性为45.8，浓度极限可达到0.2ppm的甲醛。 所有这些结果都比到目前为止报告的结果要好，这将具有巨大的实际空气质量监测应用。

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  • 来源
    《RSC Advances》 |2019年第26期|共8页
  • 作者

    Wang Bingshan; Yu Jinbao; Li Xiaohong; Yin Jun; Chen Meng;

  • 作者单位

    Jingdezhen Univ Dept Biochem Jingdezhen 333000 Jiangxi Peoples R China;

    Jingdezhen Univ Dept Biochem Jingdezhen 333000 Jiangxi Peoples R China;

    Jingdezhen Ceram Inst Natl Engn Res Ctr Domest &

    Bldg Ceram Jingdezhen 333000 Jiangxi Peoples R China;

    Jingdezhen Univ Dept Biochem Jingdezhen 333000 Jiangxi Peoples R China;

    Jingdezhen Univ Dept Biochem Jingdezhen 333000 Jiangxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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