Heterostructural CuO-ZnO Nanocomposites: A Highly Selective Chemical and Electrochemical NO₂ Sensor.

ABSTRACT: A simple one-step chemical method is employed for the successful synthesis of CuO(50%)-ZnO(50%) nanocomposites (NCs) and investigation of their gas sensing properties. The X-ray diffraction studies revealed that these CuO-ZnO NCs display a hexagonal wurtzite-type crystal structure. The average width of 50-100 nm and length of 200-600 nm of the NCs were confirmed by transmission electron microscopic images, and the 1:1 proportion of Cu and Zn composition was confirmed by energy-dispersive spectra, i.e., CuO(50%)-ZnO(50%) NC studies. The CuO(50%)-ZnO(50%) NCs exhibit superior gas sensing performance with outstanding selectivity toward NO₂ gas at a working temperature of 200 °C. Moreover, these NCs were used for the indirect evaluation of NO₂ via electrochemical detectio

SUBMITTER: Mali SM 

PROVIDER: S-EPMC6893959 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature