A HIGH-SENSITIVITY HYDROGEN GAS SENSOR BASED ON AG NANOPARTICLES-DECORATED POROUS CO3O4 NANORODS

Nguyen Duc Cuong, Duong Tuan Quang, Tran Quy Phuong, Tran Thai Hoa, Vu Hung Sinh, Nguyen Van Hieu
Author affiliations

Authors

  • Nguyen Duc Cuong University of Science, Hue University https://orcid.org/0000-0002-7341-3661
  • Duong Tuan Quang
  • Tran Quy Phuong
  • Tran Thai Hoa
  • Vu Hung Sinh
  • Nguyen Van Hieu

Abstract

In this report, the Ag nanoparticles-decorated cobalt carbonate hydroxide microflowers were synthesized using a simple hydrothermal approach without using surfactants, which were used as precursor to prepare Ag nanoparticles-decorated porous Co3O4 nanorods through an annealing process. The porous Co3O4 nanorods were composed of small primary nanoparticles with the size of ~ 10 nm, their surface was decorated with uniform Ag nanoparticles (~ 10 nm). The sensors based on the porous Co3O4 nanorods decorated by Ag nanoparticles has higher sensitivity, selectivity to H2 gas than other reduced gases with rapid response-recovery times. The enhanced H2 sensing properties of the sample may be attributed to the excellent catalytic feature of Ag nanoparticles and unique porous Co3O4 nanorods. Results demonstrate potential of Ag nanoparticles-decorated porous Co3O4 nanorods as sensing material for detection of hydrogen gas at low temperature.

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Published

10-05-2024

How to Cite

[1]
N. D. Cuong, D. T. Quang, T. Q. Phuong, T. T. Hoa, V. H. Sinh, and N. V. Hieu, “A HIGH-SENSITIVITY HYDROGEN GAS SENSOR BASED ON AG NANOPARTICLES-DECORATED POROUS CO3O4 NANORODS”, Vietnam J. Sci. Technol., vol. 61, no. 4, May 2024.

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Section

Materials