Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing

Sensors

卷:12

关键词: ZnO nanostructures;    gas sensor;    CO sensor;    UV sensor;    optical properties;   

DOI  :  10.3390/s121013842

来源: DOAJ

【 摘 要 】

In this paper, synthesis and results of the low temperature sensing of carbon monoxide (CO) gas and room temperature UV sensors using one dimensional (1-D) ZnO nanostructures are presented. Comb-like structures, belts and rods, and needle-shaped nanobelts were synthesized by varying synthesis temperature using a vapor transport method. Needle-like ZnO nanobelts are unique as, according to our knowledge, there is no evidence of such morphology in previous literature. The structural, morphological and optical characterization was carried out using X-ray diffraction, scanning electron microscopy and diffused reflectance spectroscopy techniques. It was observed that the sensing response of comb-like structures for UV light was greater as compared to the other grown structures. Comb-like structure based gas sensors successfully detect CO at 75 °C while other structures did not show any response.

【 授权许可】

Unknown