Cellulose Nanofiber Platform for Electrochemical Sensor Device: Impedance Measurement Characterization and Its Application for Ethanol Gas Sensor

Bioplastics such as cellulose nanofibers (CNF) are widely used in daily life an alternative to plastics. CNF is also considered a biodegradable, readily disposable, and low-cost material, making it suitable sensor platform. The mechanically treated has both hydrophobic hydrophilic properties where the sides bond strongly with MWCNTs provide conductivity on sheet, while allow target component be adsorbed its laminated structure react electrode surface. From electrochemical measurement of ferricyanide solution indicated that modified could act well electrode. Furthermore, thin-sheet successfully detected ethanol based direct electron transfer (DET) between PQQ-ADH Aside from lightweight properties, developed possesses excellent stretchability, flexibility, adjustability human skin, ideal for future wearable skin gas sensor.