Abstract In this work, CdAl mixed metal oxides (CdAl-MMOs), CdO/CdAl2O4 composites, were prepared by calcination of sodium dodecyl sulfonate (SDS) intercalated CdAl layered double hydroxide (CdAl-LDH) at different temperature, which was synthesized by traditional hydrothermal synthesis. The CdAl-MMOs were investigated at room temperature, which shows good humidity-sensing performance. Especially, the one calcined at 500oC (CdAl-MMO-500) shows good linearity, small hysteresis, high humidity sensitivity as well as satisfactory response and recovery time. In addition, the composites CdO/CdAl2O4 have improved the humidity-sensing performances as compared to the one obtained by calcination of the blending inorganic salts. The experimental results further demonstrate that the approach of calcination LDH precursor can be generalized as an effective way of making mixed metal oxides (MMOs) with homogeneous dispersion between metal elements and thus specific properties.

中文翻译：

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CdAl 层状双氢氧化物煅烧制备的 CdAl 混合金属氧化物：湿度传感的合成和性能

摘要 本工作采用传统方法合成的十二烷基磺酸钠 (SDS) 插层 CdAl 层状双氢氧化物 (CdAl-LDH) 在不同温度下煅烧制备了 CdAl 混合金属氧化物 (CdAl-MMOs)、CdO/CdAl2O4 复合材料。水热合成。CdAl-MMOs 在室温下进行了研究，显示出良好的湿度传感性能。特别是在 500oC 煅烧的 (CdAl-MMO-500) 表现出良好的线性、小滞后、高湿度敏感性以及令人满意的响应和恢复时间。此外，与通过煅烧混合无机盐获得的复合材料相比，CdO/CdAl2O4 复合材料提高了湿度传感性能。