Room temperature NO2 sensing: what advantage does the rGO–NiO nanocomposite have over pristine NiO?

• DOI: 10.1039/c5cp01987g
• Publication Date: 2015-05-05T13:01:56Z
• Authors: Jian Zhang; Dawen Zeng; Shiqian Zhao; Jinjin Wu; Keng Xu; Qiang Zhu; Guozhu Zhang; Changsheng Xie
• Keywords: Non-blocking I/O

In recent years, there has been increasing interest in synthesis of reduced graphene oxide (rGO)-metal semiconductor (MOS) nanocomposites for room temperature gas sensing applications. Generally, the sensitivity a MOS can be obviously enhanced by incorporation rGO. However, lack knowledge regarding how rGO enhance gas-sensing performances MOSs impedes its Herein, order to get an insight into mechanism rGO-MOS and further improve NiO-based sensors at temperature, rGO-NiO nanocomposite was synthesized. Through comparison study on NO2 pristine NiO, inverse behavior different concentration ranges observed high range (7-60 ppm). Significantly, stimulating effect recovery rate confirmed characteristics that advantageous development temperature. By comprehending electronic interactions between target gas, this work may open up new possibilities improvement graphene-based hybrid materials with even higher performances.