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首页> 外文期刊>RSC Advances >A copper–manganese composite oxide as QCM sensing layers for detection of formaldehyde gas
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A copper–manganese composite oxide as QCM sensing layers for detection of formaldehyde gas

机译：铜锰复合氧化物作为QCM传感层，用于检测甲醛气体

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A copper–manganese composite oxide was synthesized by controlling the molar ratio of Cu to Mn and calcination temperature. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and nitrogen adsorption–desorption measurements were employed to characterize the obtained products. The as-prepared copper–manganese composite oxide functionalized QCM resonators were fabricated and explored for HCHO sensing. The copper–manganese composite oxide functionalized QCM resonators had a significant response to HCHO, and the sensitivity of the resonators reached 6.35 Hz (μg ppm)?1. Neither the response nor the sensing profile observed significant changes after 60 days. The linear equation between the response of the QCM resonator and HCHO concentration endows the copper–manganese composite oxide functionalized QCM resonators with a capability of HCHO quantitative analysis. The adsorption–desorption process via hydrogen bonding between the oxygen of the copper–manganese composite oxide and HCHO molecules may be a plausible sensing mechanism for HCHO sensing.
机译：通过控制铜与锰的摩尔比和煅烧温度合成了铜锰复合氧化物。使用扫描电子显微镜，透射电子显微镜，X射线衍射和氮吸附-解吸测量来表征所得产物。制备并研究了准备好的铜-锰复合氧化物功能化QCM谐振器，用于HCHO传感。铜锰复合氧化物功能化QCM谐振器对HCHO响应显着，谐振器的灵敏度达到6.35 Hz（μgppm） ？1 。 60天后，反应和感觉曲线均未观察到明显变化。 QCM谐振器的响应和HCHO浓度之间的线性方程使铜锰复合氧化物功能化QCM谐振器具有HCHO定量分析的能力。铜-锰复合氧化物的氧与HCHO分子之间通过氢键进行的吸附-解吸过程可能是HCHO传感的一种可能的传感机制。

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