Surface acoustic wave sensors with Graphene/PANI nanocomposites for nitric oxide detection

[摘要] Surface acoustic wave sensors with grapheme/PANI nanocomposite sensitive films for detecting nitric oxide (NO) were fabricated and experimentally studied. Morphological characterization and functionalization of the sensing material were explored using SEM and FTIR, respectively. The study of sensor response compared film sensitivity, response time, reversibility, and limit of detection for nanocomposite films, pure grapheme and pure PANI to the detection of NO. The response and recovery times were 40s and 20s when detecting 4ppm NO, respectively. The frequency response was discovered to be linear in the NO concentration range 1-50 ppm. The nanocomposite sensors had improved sensitivities compared to the polymer devices, and better response times.

[发布机构] Chuzhou Vocational and Technical College, Chuzhou; 239000, China^1;School of Energy and Power Engineering, Jiangsu University, Zhengjiang; 212013, China^2

[关键词] Functionalizations;Limit of detection;Morphological characterization;Nanocomposite sensors;Nitric oxide detection;NO concentration;Sensing material;Surface acoustic wave sensors