Issue 15, 2023

In situ infrared CO detection using silver loaded EMT zeolite films

Abstract

Ag cluster catalyst-based oxidation of CO to CO2 is an important way to remove CO at low temperatures. However, the instability of silver clusters seriously limits the catalytic application. Herein, sub-nanosized EMT zeolite nanoparticles served as Ag cluster carriers with high selectivity, low coordination, and unsaturated atom active sites. The silver clusters with sub-nanometer size can be controlled with different charge states and loading rates. A detection film with 500 nm was further prepared by assembling the Ag-EMT composites with a small amount of Nalco as an adhesive. For CO detection, a completely enclosed gas sensing device based on in situ infrared spectroscopy was employed without air interference. CO was accurately introduced into the detection chamber and catalysed into CO2 by silver loaded EMT zeolite films, and the whole process was accurately recorded by infrared spectroscopy. CO with a detection range of 2–50 ppm was realized, showing great application potential in gas monitoring.

Graphical abstract: In situ infrared CO detection using silver loaded EMT zeolite films

Supplementary files

Article information

Article type
Paper
Submitted
14 Apr. 2023
Accepted
05 Jūn. 2023
First published
07 Jūl. 2023
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2023,5, 3934-3941

In situ infrared CO detection using silver loaded EMT zeolite films

Y. Wang, H. He, J. Sun, X. Zhang, M. Zulpya, X. Zheng, L. Xu and B. Dong, Nanoscale Adv., 2023, 5, 3934 DOI: 10.1039/D3NA00238A

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