Selective and reversible carbon mono oxide gas detection using silver doped octahedral molecular sieves (OMS-2) nanorods
Abstract In this work a potable, resistive sensor is fabricated for the selective detection of CO gas using nanorods of Ag doped octahedral molecular sieves-2 (Ag-OMS-2). During exposure to carbon monoxide (CO) gas at room temperature, resistance of Ag-OMS-2 film was dropped from 557 kΩ to 352 kΩ in just 18 sec. However, exposed sample regained its initial resistance value in 25 sec when CO gas source was removed. Both sensing and recovery processes were carried out at room temperature. The sensor film showed excellent reproducibility during several cycles of CO gas exposure. Swift activation of oxygen molecules for the oxidation of CO by the silver present in the tunnel of manganese oxide network is supposed to be responsible for sensing activity of Ag-OMS-2 towards carbon monoxide gas.
Authors
- Monica Jaiswal (ORCID: https://orcid.org/0000-0001-9658-9291)
- S. Aravindan (ORCID: https://orcid.org/0000-0002-9738-2994)
- Jagjiwan Mittal (ORCID: https://orcid.org/0000-0003-4291-9915)
- Sumit Chaudhary (ORCID: https://orcid.org/0000-0003-3221-5340)
- Satinder K. Sharma (ORCID: https://orcid.org/0000-0001-9313-5550)
- Priyanshu Singh (ORCID: https://orcid.org/0009-0006-3167-6339)
- Robin Kumar (ORCID: https://orcid.org/0000-0001-7734-2242)
- Amit Kumar Gupta (ORCID: https://orcid.org/0000-0001-5554-2761)
Institutions
- Amity University (IN)
- Indian Institute of Technology Delhi (IN)
- Indian Institute of Technology Mandi (IN)
Publication Details
- Journal
- Advances in Natural Sciences Nanoscience and Nanotechnology
- Published
- 2024-08-22
- DOI
- https://doi.org/10.1088/2043-6262/ad6cc4
- Citations
- 1
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.21