The curious case of polyaniline-graphene nanocomposites: a review on their application as exceptionally conductive and gas sensitive materials

AbstractThis review presents a brief overview of the electrical and gas-sensor properties of polyaniline (PANI) and graphene-based nanocomposites, their application as gas detection materials, and their underlying sensing mechanisms. Several studies have shown that graphene-based PANI gas sensors perform remarkably well at ambient temperatures, are energy efficient, and are inexpensive. The electrical and gas sensing properties of PANI/graphene nanocomposites offer improved responsiveness, durability, and other detection capabilities in sensor-based devices at room temperature. Moreover, the electrical conductivity and gas sensor properties may be controlled by the synthesis methods and the form and type of graphene. This review provides a new framework for the development of new nanomaterials based on PANI/graphene, which will advance their development and industrialization in the environment.Keywords: PANI/graphene nanocompositesgrapheneelectrical propertiesgas sensing properties Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors extend their appreciation to the Deanship of Scientific Research at King Khalid University (KKU) for funding this research through the Research Group Program Under the Grant Number: (R.G.P.2/588/44). The authors are thankful to the Deanship of Scientific Research at Najran University for funding this work, under the Research Groups Funding program grant code [NU/RG/SERC/12/45].