使用掺银八面体分子筛 (OMS-2) 纳米棒进行选择性和可逆的一氧化碳气体检测

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-22 DOI:10.1088/2043-6262/ad6cc4

Amit Kumar Gupta, Priyanshu Singh, Monical Jaiswal, Jagjiwan Mittal, Sivanandam Aravindan, Sumit Chaudhary, Satinder Kumar Sharma, Robin Kumar

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引用次数: 0

摘要

本研究利用掺银八面体分子筛-2（Ag-OMS-2）纳米棒制作了一种可饮用的电阻式传感器，用于选择性检测一氧化碳气体。在室温下暴露于一氧化碳（CO）气体时，Ag-OMS-2 薄膜的电阻在短短 18 秒内从 557 kΩ 下降到 352 kΩ。然而，当移除 CO 气体源时，暴露的样品在 25 秒内恢复了初始电阻值。传感和恢复过程均在室温下进行。在多次接触 CO 气体的过程中，传感器薄膜显示出极佳的再现性。氧化锰网络隧道中的银迅速激活氧分子氧化一氧化碳，这应该是 Ag-OMS-2 对一氧化碳气体具有传感活性的原因。

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Selective and reversible carbon mono oxide gas detection using silver doped octahedral molecular sieves (OMS-2) nanorods

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.

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来源期刊

Advances in Natural Sciences: Nanoscience and Nanotechnology NANOSCIENCE & NANOTECHNOLOGYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY

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4.80%

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