POLY ANILINE-POLYSTYRENE NANOFIBERS DIRECTLY WRITTEN ON CHEAP FLEXIBLE SUBSTRATES BY ELECTROSPINNING, A LOW-COST AND SENSITIVE HYDROGEN SULFIDE GAS SENSOR

摘要

This paper presents a novel hydrogen sulfide (H_2S) gas sensor based on polyaniline-polystyrene nanofibers doped by camphorsulfonic acid (HCSA). The obtained polyaniline (PAni) sensor has good sensitivity, low detection limit and very good recovery time compared with the previously proposed H_2S sensors based on PAni. The sensor was fabricated by a simple and cheap procedure on cheap paper and polyimide substrates by electrospinning. Simplicity of the synthesizing method, together with the cheap and flexible substrates provide a low-cost and room temperature H_2S gas sensor that is unique in terms of sensitivity, detection limit and recovery time.