Thermally Stimulated Desorption Optical Fiber-Based Interrogation System: An Analysis of Graphene Oxide Layers’ Stability

Thin graphene oxide (GO) film layers are being widely used as sensing in different types of electrical and optical sensor devices. GO particularly popular because their tuned interface reflectivity. The stability is fundamental for device reliability, complex aqueous environments such wastewater. In this work, the layer-by-layer (LbL) films polyethyleneimine (PEI) was investigated. results led to following conclusions: PEI/GO grow linearly with number bilayers long adsorption time kept constant; kinetics a layer follow behavior polyelectrolytes; interaction associated growth these ionic type since desorption activation energy has value 119 ± 17 kJ/mol. Therefore, it possible conclude that suitable application fiber devices; most importantly, an fiber-based interrogation setup can easily be adapted investigate situ via thermally stimulated process. addition, draw inferences about solution fast, reliable way when compared traditional ones.