Open AccessPEDOT:PSS/GO NANOCOMPOSITE FOR INDOOR CO2 SENSOR
Author(s) -
Nur Yasmin Sofea Rosland,
Khadijah Ismail,
Siti Nooraya Mohd Tawil,
Siti Hasnawati Jamal
Publication year - 2021
Publication title -
international journal of advanced research
Language(s) - English
Resource type - Journals
ISSN - 2320-5407
DOI - 10.21474/ijar01/13292
Subject(s) - pedot:pss , materials science , nanocomposite , substrate (aquarium) , graphene , nanotechnology , environmentally friendly , layer (electronics) , fabrication , chemical engineering , optoelectronics , medicine , ecology , oceanography , alternative medicine , pathology , engineering , biology , geology
Carbon dioxide (CO2) which is a colourless and odourless gas, requires an efficient detection, as excessive amount in the environment would possibly leads to global warming. This work discusses on an environmentally friendly and non-toxic CO2 sensor for indoor air monitoring. The fabricated sensor is developed by using poly(3,4ethylenedioxythiophene):poly(4styrenesulfonate)/ graphene oxide (PEDOT:PSS/GO) nanocomposite. Nanocomposite characterisations are performed by using field-emission scanning electron microscope (FESEM) and X-ray diffraction (XRD) to confirm excellent properties of PEDOT:PSS and GO as suitable materials for CO2 sensor development. Fabrication of one layer PEDOT:PSS/GO nanocomposite on environmentally friendly kaolin-coated paper substrate via dip coating method shows good electrical conductivity of 0.25 S. At room temperature, at fixed CO2 flow rate of 0.05 l/min, the fabricated sensor response time is 32 s, with sensor response and sensitivity of 0.8 and 16/l/min respectively. With fast chemiresistive response towards CO2 molecules, the fabricated sensor provides promising results for indoor CO2 monitoring.