Title :
NO2 gas sensor based on polyvinylpyrrolidone/reduced graphene oxide nanocomposite
Author :
Junlong Huang ; Guangzhong Xie ; Yong Zhou ; Tao Xie ; Guangjin Yang
Author_Institution :
Sch. of Optoelectron. Inf., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China
Abstract :
Pure polyvinylpyrrolidone (PVP) film, reduced graphene oxide (RGO) film and PVP/RGO composite film were coated on quartz crystal microbalance (QCM) for nitrogen oxide (NO2) sensing at room temperature. These films were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), respectively. Because only a few RGO were deposited on QCM, the sensor based on RGO almost had no response to NO2. In addition, compared with the response of pure PVP film, an increase in the response of PVP/RGO composite film may be caused by the more absorption area for NO2 molecule adsorption.
Keywords :
Fourier transform spectra; absorption; coatings; filled polymers; gas sensors; graphene; infrared spectra; microsensors; nanocomposites; nanosensors; nitrogen compounds; polymer films; quartz crystal microbalances; scanning electron microscopy; thin film sensors; CO; FTIR; Fourier transform infrared spectroscopy; NO2; PVP-RGO composite film; QCM; SEM; coating; gas sensor; molecule absorption; polyvinylpyrrolidone-reduced graphene oxide nanocomposite; quartz crystal microbalance; scanning electron microscopy; temperature 293 K to 298 K; Actuators; Films; Gas detectors; Graphene; Scanning electron microscopy; Temperature sensors; NO2 gas sensor; Polyvinylpyrrolidone; reduced graphene oxide;
Conference_Titel :
Advanced Research and Technology in Industry Applications (WARTIA), 2014 IEEE Workshop on
Conference_Location :
Ottawa, ON
DOI :
10.1109/WARTIA.2014.6976459
