Polyaniline-polystyrene nanofibers directly written on cheap flexible substrates by electrospinning, a low-cost and sensitive hydrogen sulfide gas sensor

Abstract

This paper presents a novel hydrogen sulfide (H2S) 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 H2S 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 H2S gas sensor that is unique in terms of sensitivity, detection limit and recovery time.