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Synthesis of Mn-doped CeO_2 nanorods and their application as humidity sensors

机译:Mn掺杂CeO_2纳米棒的合成及其在湿度传感器中的应用

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Mn-doped CeO_2 nanorods have been prepared from CeO_2 particles through a facile composite-hydroxide-mediated (CHM) approach. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The analysis from the X-ray photoelectron spectroscopy indicates that the manganese doped in CeO_2 exists as Mn~(4+). The responses to humidity for static and dynamic testing proved doping Mn into CeO_2 can improve the humidity sensitivity. For the sample with Mn% about 1-22, the resistance changes from 375-3 to 2-7MΩ as the relative humidity (RH) increases from 25 to 90%, indicating promising applications of the Mn-doped CeO_2 nanorods in environmental monitoring.
机译:锰掺杂的CeO_2纳米棒已经通过简便的复合氢氧化物介导(CHM)方法由CeO_2颗粒制备。通过X射线衍射(XRD),扫描电子显微镜(SEM)和透射电子显微镜(TEM)表征产物。 X射线光电子能谱分析表明,CeO_2中掺杂的锰以Mn〜(4+)的形式存在。静态和动态测试对湿度的响应表明,将Mn掺入CeO_2可以提高湿度敏感性。对于Mn%约为1-22的样品,随着相对湿度(RH)从25%增至90%,电阻从375-3变为2-7MΩ,这表明Mn掺杂的CeO_2纳米棒在环境监测中具有广阔的应用前景。

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