Efficient detection of hazardous H2S gas using multifaceted Co3O4/ZnO hollow nanostructures

Tengfei Shi; Haigang Hou; Shahid Hussain; Chuanxin Ge; Mabkhoot A Alsaiari; Ali S Alkorbi; Guiwu Liu; Raiedhah Alsaiari; Guanjun Qiao

doi:10.1016/j.chemosphere.2021.132178

Efficient detection of hazardous H₂S gas using multifaceted Co₃O₄/ZnO hollow nanostructures

Chemosphere. 2022 Jan;287(Pt 2):132178. doi: 10.1016/j.chemosphere.2021.132178. Epub 2021 Sep 8.

Authors

Tengfei Shi¹, Haigang Hou¹, Shahid Hussain², Chuanxin Ge¹, Mabkhoot A Alsaiari³, Ali S Alkorbi³, Guiwu Liu⁴, Raiedhah Alsaiari³, Guanjun Qiao⁵

Affiliations

¹ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
² School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China. Electronic address: shahid@ujs.edu.cn.
³ Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia.
⁴ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China. Electronic address: gwliu76@ujs.edu.cn.
⁵ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China. Electronic address: gjqiao@ujs.edu.cn.

PMID: 34509024
DOI: 10.1016/j.chemosphere.2021.132178

Abstract

The rapid increases in environmental hazardous gases have laid dangerous effects on human health. The detection of such pollutants gases is mandatory using various optimal techniques. In this paper, porous multifaceted Co₃O₄/ZnO nanostructures are synthesized by pyrolyzing sacrificial template of core-shell double zeolitic imidazolate frameworks (ZIFs) for gas sensing applications. The fabricated exhibit superior gas sensor response, high selectivity, fast response/recovery times, and remarkable stability and sensitivity to H₂S gas. In particular, the multifaceted Co₃O₄/ZnO nanostructures show a maximum response of 147 at 100 ppm of H₂S under optimum conditions. The remarkable gas sensing performances are mainly ascribed to high porosity, wide surface area multifaceted nanostructures, presence of heterojunctions and catalytic activity of ZnO and Co₃O₄, which are beneficial for H₂S gas sensors industry.

Keywords: Co(3)O(4)/ZnO; Gas sensor; Multifaceted hollow nanostructure; ZIF-8@ZIF-67; p-n heterojunctions.

MeSH terms

Gases
Humans
Nanostructures*
Porosity
Zeolites*
Zinc Oxide*

Substances

Gases
Zeolites
Zinc Oxide