 This research paper discusses the development of a new type of chemo-resistive sensor which is capable of detecting hydrogen, carbon dioxide, carbon monoxide, methane, and ethylene at room temperature. The sensor is made up of a combination of inorganic semiconductor particles and carbon nanofibers which are combined using an electrospinning annealing process. The resulting structure has a large surface area and synergistic and heterojunction effects between the two materials, allowing it to be highly responsive to methane at room temperature. Additionally, the sensor is able to differentiate between different types of gases, making it suitable for use in applications such as leak detection or gas concentration measurement. This article was authored by Qingqing Su, Jingjing Yang, Yang Wang, and others.