Surface Structure Engineering of Nanosheet-Assembled NiFe2O4 Fluffy Flowers for Gas Sensing.

ABSTRACT: In this work, we present a strategy to improve the gas-sensing performance of NiFe2O4 via a controllable annealing Ni/Fe precursor to fluffy NiFe2O4 nanosheet flowers. X-ray diffraction (XRD), a scanning electron microscope (SEM), nitrogen adsorption-desorption measurements and X-ray photoelectron spectroscopy (XPS) were used to characterize the crystal structure, morphology, specific surface area and surface structure. The gas-sensing performance was tested and the results demonstrate that the response was strongly influenced by the specific surface area and surface structure. The resultant NiFe2O4 nanosheet flowers with a heating rate of 8 °C min-1, which have a fluffier morphology and more oxygen vacancies in the surface, exhibited enhanced response and shortened response time toward et

SUBMITTER: Wang X 

PROVIDER: S-EPMC7911288 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature