Highly Sensitive SF6 Decomposition Byproducts Sensing Platform Based on CuO/ZnO Heterojunction Nanofibers

Hydrogen sulfide (H2S) and sulfur dioxide (SO2) are two typical decomposition byproducts of hexafluoride (SF6), commonly used as an insulating medium in electrical equipment; for instance, gas circuit breakers insulated switchgears. In our work, fiber-like p-CuO/n-ZnO heterojunction sensing materials were successfully prepared via the electrospinning method to detect SF6 byproducts, H2S SO2 gases. The results demonstrated that nanofiber sensors have good performance with respect SO2. It is noteworthy this sensor exhibits higher faster response–recovery time enhanced performances can probably be attributed sulfuration–desulfuration reaction between materials. Moreover, exhibited a high response low exposure (below 5 ppm). Towards end paper, mechanism discussed carefully. Calculations based on first principles carried out Cu/ZnO construct adsorption models molecules. Information energy, density states, energy gap values charge calculated compared explain gas-sensitive ZnO