Enhanced chemiresistive sensing performance of well-defined porous CuO-doped ZnO nanobelts toward VOCs.

ABSTRACT: Although the post-doping approach as a typical and effective method has been widely employed to improve the gas sensing performance of nanostructured metal oxides, it easily breaks their porous nanostructures. Herein a facile partial cation-exchange strategy combined with thermal oxidation has been developed to prepare porous CuO-doped ZnO nanobelts. Using ZnSe·0.5N₂H₄ nanobelts as the precursor template, Cu₂Se-doped precursor nanobelts were obtained with Zn²⁺ cations partially exchanged by Cu²⁺ cations. After annealing in air, they are further oxidized into well-defined porous CuO-doped ZnO nanobelts. Through manipulating the amount of exchanged Cu²⁺ cations, the CuO-doping concentration can be precisely tuned. Based on the

SUBMITTER: Li G 

PROVIDER: S-EPMC9419800 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature