Low-temperature electrodeposited Co-doped ZnO nanorods with enhanced ethanol and CO sensing properties

Tuning selectivity through cobalt doping in spray pyrolysis deposited ZnO thin films

“…The magnetic property of Co-doped ZnO was intensively studied so far, in contrast very few investigations are available for gas sensing applications. The improved sensing performance were reported for ethanol and carbon monoxide using Co-doped ZnO nanorods [43] and 1,2-dichloroethane using hierarchical microspheres of Co-doped ZnO [44]. Liu et al [45] have reported that effect of 0.5 wt% Co-doping in ZnO nanofibers can exhibit a sensitive and selective nature towards acetone and ethanol vapours at 633 K. Spray pyrolysis technique is more convenient to develop nanostructures with different morphology, transport properties and suitable for large scale production.…”

Synthesis and oxygen vacancy related NO2 gas sensing properties of ZnO:Co nanorods arrays gown by a hydrothermal method

“…Doping with other elements is an effective way to improve the optical, electrical and gas sensing properties of ZnO nano-structures [18]. Co-doped ZnO nanorods sensors have showed improved sensitivity and the reason can be attributed to the increased releasing trapped electrons by doping [19]. High density vertical Ti doped ZnO nanorods were uniformly grown on ZnO substrate and the photoluminescence (PL) dominated indicates that the Ti doping generated electrons eliminated the depletion region and increased conductivity [20].…”

Optimization of Pd content in ZnO microstructures for high-performance gas detection

“…Over the past decades, great efforts have been made to develop novel gas sensors to trace the toxic, combustible, and explosive gases because of the growing demands for environmental sensing, personal safety, industrial production, and national security [1]. Metal oxide semiconductor nanomaterials are good candidates for gas sensing, due to their particular advantages over the traditional ones, such as high sensibility, fast response, low power consumption, and portability [2,3].…”