Synthesis of ZnO nanorods by spray pyrolysis for H2S gas sensor

► Hexagonal pillar shaped ZnO nanorods with different sizes have been successfully synthesized by spray pyrolysis technique. ► ZnO nanorods thin films showed much better sensitivity and stability than the conventional materials to H2S gas (100 ppm) at 50 °C. ► This ZnO thin film has potential in application of room temperature H2S gas sensing.