Synthesis of nano-zinc oxide-oxidized multiwall carbon nanotubes (ZnO-OMWCNTs) nanocomposite with different weight percentages of OMWCNTs via a multistep procedure has been described. The structure of this newly synthesized ZnO-OMWCNT was fully characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, and Fourier-transform infrared (FT-IR) techniques. In this research, nano-ZnO-OMWCNTs with different weight percentages of oxidized multiwall carbon nanotubes (X = 0, 0.1, 0.5, 1, and 2 wt%) were prepared. Alumina substrate with gold electrodes was labeled by sputtering, and then, the nanocomposite was deposited using spin coating machine. The sensor efficiency of nano-ZnO-OMWCNTs as recyclable nanosensor was explored in probe of nitrous oxide (NO_x) gas at the concentration of 20–40 ppm NO_x and evaluated at different temperatures (150–300 °C). Detection of NO_x gas by ZnO-OMWCNTs sensor was studied under different experimental conditions, and the results were compared by previous studies with ZnO and another metal oxide. The results show that the responsiveness, detection range, and optimum temperature of ZnO-OMWCNTs sensor performance at 250 °C were improved compared to other works. Also, adding 1 wt% of multiwall carbon nanotubes functionalized (FMWCNT) leads to an increase in sensitivity and reduces the operating temperature to 150 °C.

已经描述了通过多步法合成具有不同重量百分比的OMWCNT的纳米氧化锌氧化的多壁碳纳米管（ZnO-OMWCNT）纳米复合材料。通过X射线衍射，扫描电子显微镜，拉曼光谱和傅立叶变换红外（FT-IR）技术对这种新合成的ZnO-OMWCNT的结构进行了充分表征。在这项研究中，制备了具有不同重量百分比的氧化多壁碳纳米管（X  = 0、0.1、0.5、1和2 wt％）的纳米ZnO-OMWCNT 。通过溅射对带有金电极的氧化铝基板进行标记，然后使用旋涂机沉积纳米复合材料。在一氧化二氮（NO _x）探针中探索了作为可回收纳米传感器的纳米ZnO-OMWCNTs的传感器效率在20-40 ppm的NO的浓度）气体_X，并在不同的温度（150-300℃）进行评价。NO的检测_X气体通过传感器进行不同的实验条件下进行研究的ZnO-OMWCNTs，结果通过用ZnO和另一种金属氧化物以前的研究相比。结果表明，与其他工作相比，ZnO-OMWCNTs传感器在250°C下的响应速度，检测范围和最佳温度均得到了改善。此外，添加1 wt％的功能化多壁碳纳米管（FMWCNT）会导致灵敏度提高，并将工作温度降低至150°C。