ZnO coral-like nanoplates decorated with Pd nanoparticles for enhanced VOC gas sensing

A high working temperature of the ZnO nanomaterial-based gas sensor could shorten lifetime and increase its power consumption. Enhancing volatile organic compound (VOC) sensing performance sensors in terms response is vital for their practical application. Decoration noble metals onto nanostructures an effective approach improving characteristics. Herein, hydrothermally synthesized coral-like nanoplates decorated with Pd nanoparticles are introduced to achieve improved VOC performance. The morphology, crystal structure, composition, atomic properties pristine Pd–ZnO were investigated. results showed a remarkable reduction optimal from 450 °C based 350 sensor. acetone at operating was three times by surface decoration nanoparticles. time recovery about faster than that reached theoretical detection limit 17 ppt sensitivity 3.5–2.5 ppm °C. transient stability after several on/off switching cycles air revealed reusability fabricated devices. plausible mechanism porous nanoplate-based also discussed.