▎ 摘　　要

In this study, SnO2 nanofibers and their modifications (Cd doping and making a composite with reduced graphene oxide) were synthesized via electrospinning and employed as CO gas sensing. The enhanced sensing properties of Cd-doped SnO2-RGO nanofibrous mat comparing to other counterparts could be ascribed to p-type behavior of RGO inside the nanofibers and catalytic activity and adding new sites for oxidation of cadmium elements, which offered flexible and optimum gas sensing. These mats had a specific surface area of 74.56 m(2)/g with 10.65 nm cylindrical slender channels and average fiber diameter of 200.57 nm.