Hydrothermal synthesis of a bimetallic metal-organic framework (MOF)-derived Co3O4/SnO2 composite as an effective material for ethanol detection

Yang Mu; Zhenkai Zhang; Zhiguo Yang; Chen Yue; Zhenyue Liu; Davoud Dastan; Xi-Tao Yin; Xiaoguang Ma

doi:10.1039/d3dt03322h

Hydrothermal synthesis of a bimetallic metal-organic framework (MOF)-derived Co₃O₄/SnO₂ composite as an effective material for ethanol detection

Dalton Trans. 2023 Dec 12;52(48):18257-18267. doi: 10.1039/d3dt03322h.

Authors

Yang Mu¹, Zhenkai Zhang¹, Zhiguo Yang¹, Chen Yue¹, Zhenyue Liu¹, Davoud Dastan², Xi-Tao Yin¹, Xiaoguang Ma¹

Affiliations

¹ School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264000, China. yxtaj@163.com.
² Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14850, USA.

PMID: 37997676
DOI: 10.1039/d3dt03322h

Abstract

This study utilized a hydrothermal method and air calcination to prepare a bimetallic metal-organic framework (MOF) derived Co₃O₄/SnO₂ nanocomposite material, which was employed as a sensing material for ethanol detection. The structure, elemental composition, and surface morphology of Co₃O₄/SnO₂ nanocomposite materials were defined using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Compared to SnO₂ nanoparticles derived from metal-organic frameworks, the bimetallic metal-organic framework-derived Co₃O₄/SnO₂ nanocomposite material exhibits significantly superior ethanol sensing performance. At 225 °C, the response value (R = R_a/R_g) to 100 ppm ethanol is 135, demonstrating excellent repeatability, selectivity and stability. Gas sensitivity assessment findings indicate that the 3 at% (Co/Sn) Co₃O₄/SnO₂ nanocomposite is an excellent gas sensing material, providing strong technical support for ethanol detection and environmental monitoring.