Nitrogen dioxide (NO₂) sensing is important in terms of the agriculture development and healthcare monitoring. However, relatively poor recovery kinetics at a low temperature is still a problem for NO₂sensing and remains to be solved. In this work, we combine the excellent sensing properties and gas adsorption capacity of two- dimensional (2D) fin disulfide (SnS₂) hexagonal nanoflakes with the beneficial electrical properties of graphene to build high-performance NO₂sensors by a simple and low-cost method. We found that the sensors based on the quasi-2D rGO-SnS₂hybrids exhibited exclusive selectivity towards NO₂. The presence of rGO in hybrids decreased optimal working temperature effectively. Sensors based on 0.8% rGO-SnS2(G-SS) show almost an order of magnitude increase in response (32) compared to pristine SnS2(3.5). Especially, the response/recovery time is 50/48 s, respectively, demonstrating the favorable response/recovery kinetics of sensors. Such significant features can be attributed to the synergistic effect of the quasi-2D G-SS hybrid and the local heterojunctions in the interface between SnS₂and rGO.