Graphene nanoplatelets can improve the performances of graphene oxide – polyaniline composite gas sensing aerogels

Carbon Trends

Filippo Rossi¹  Luca Magagnin²  Filippo Pinelli²  Tommaso Nespoli²  Andrea Fiorati²  Silvia Farè² 

[1] Corresponding author.;Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, Milan 20131, Italy;

关键词: Graphene;    Conducting polymers;    VOCs;    Gas sensing;    Graphene nanoplatelets;    Aerogels;   

DOI  :  

来源: DOAJ

【 摘 要 】

Aerogels are commonly regarded as soft and versatile materials for multiple applications thanks to their features such as elastic behavior, swelling ability and responsive characteristics. In the last decades these qualities have ensured them multiple uses in biomedical field as controlled drug delivery systems and scaffolds for tissue engineering applications. Recently their employment as sensors has attracted great interest especially thanks to their tunability and the possibility to be used as soft material instead of conventional and many times unreliable sensors in multiple sensing applications. In this work we synthetized graphene oxide/polyaniline aerogels by in situ chemical polymerization of aniline monomer in aqueous dispersion of graphene oxide sheets. We characterized the system through chemical and mechanical analysis, and we its responsivity as gas sensing device was verified. Moreover, we investigated the influence of the encapsulation of graphene nanoplatelets on the responsive ability of the device. The addition of the graphene moieties improves the conductivity of the system, its compressive mechanical resistance and the applicability of these devices as gas sensors.

【 授权许可】

Unknown