Facile preparation of monolayer NiO thin film for high performance THF sensor

High quality monolayer NiO thin film was fabricated by an oil–water interface self-assembly strategy. Polystyrene spheres were used as templates. The as-prepared film composed by a series of ordered hexagonal close-packed bowl-like array with an average diameter of about 700 nm. The monolayer NiO thin film deposited on aluminium oxide substrate with Au interdigital electrode on the surface can be directly used as a tetrahydrofuran (THF) gas...