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Gas sensing properties of CuFe 2 O 4 nanoparticles prepared by spray co‐precipitation method
Author(s) -
Hoa Pham Thi Thanh,
Duong Nguyen Phuc,
Loan To Thanh,
Anh Luong Ngoc,
Hong Nguyen Minh
Publication year - 2019
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201960005
Subject(s) - spinel , materials science , nanoparticle , rietveld refinement , microstructure , synchrotron , scanning electron microscope , precipitation , atmospheric temperature range , crystal structure , analytical chemistry (journal) , chemical engineering , nanotechnology , crystallography , metallurgy , composite material , chemistry , thermodynamics , optics , chromatography , physics , engineering , meteorology
CuFe 2 O 4 nanoparticles were prepared by using spray co‐precipitation method and annealed at 600°C. Crystal structure, microstructure and cation distribution of the sample were determined by applying of Rietveld refinement method based on synchrotron X‐ray diffraction data. Morphology was characterized by field emission scanning electron microscopy. The results indicated that the sample is single phase with inverse cubic spinel structure. Particle size was identified to be about 10 nm. The gas‐sensing properties of the copper nanoparticles were studied by using H 2 S as the analytic gas. It was found that the sensor based on the CuFe 2 O 4 nanoparticles has good response in a large operating temperature range and even at near‐room temperature. The gas sensing mechanism of the studied material was discussed in detailed.