Rapid and Template Free Synthesis of ZnO Nanorods and Analysis of their LPG Sensing Properties

Abstract

ZnO nanorods (diameters∼25 nmand lengths∼145-150 nm) were synthesized by using a simple solochemical method and their LPG sensing properties were investigated. The ZnO nanorods exhibited outstanding gas sensingcharacteristics such as, higher gas response (∼502 to 50ppm LPG at 300 •C), extremely rapid response(∼6-7 s), fast recovery (∼6-7 s), excellent reproducibility, good sensing selectivity and relatively lower operating temperature(∼300•C). The experimental results clearly demonstrate the potentialof using the ZnO nanorods as sensing material in the fabrication of LPG sensors.