Amorphous SiO2-based all-inorganic self-supporting nanofiber membrane: a flexible and breathable sensing platform for NO2 detection

An all-inorganic, self-supporting PdO–SnO 2 –SiO 2 /SiO 2 sensor with high flexibility, gas permeability, and heat resistance was prepared by a two-spinneret electrospinning route. This flexible sensor shows excellent multifunctional sensing capabilities.