Fig. 2
From: Design and implementation of PLA/GO/metal oxide composites for CO2 sensing application

Studied model molecules for (a) PLA-SiO2/GO/OCu, (b) PLA-SiO2/GO/CuO, (c) PLA-SiO2/GO/OCu/CO2, (d) PLA-SiO2/GO/CuO/CO2 and (e) PLA-SiO2/GO/OZn/CO2.
From: Design and implementation of PLA/GO/metal oxide composites for CO2 sensing application
Studied model molecules for (a) PLA-SiO2/GO/OCu, (b) PLA-SiO2/GO/CuO, (c) PLA-SiO2/GO/OCu/CO2, (d) PLA-SiO2/GO/CuO/CO2 and (e) PLA-SiO2/GO/OZn/CO2.