A catalytic filter based on Pt-CeO2 for selective methane detection with SnO2 sensors

Li, Haoyi; Wu, Ranchao; Tian, Xuelin; Han, Lin‐Hai; Tian, Chen; Yang, Boxuan; Zhi, Zinan; Hua, Zhongqiu; Fan, Shurui

doi:10.1016/j.snb.2023.133872

Cited by 3 publications

(3 citation statements)

References 36 publications

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“…There are two types of filter materials, one was prepared into a porous film that physically adsorbed gas molecules 103,104 and the other into a catalytic film that decompose gases. For example, CeO 2 could be utilized to separate oxygen at high temperatures, 105 while Pt and Pd films could permeate hydrogen. There are four basic configurations including a packed bed, a covering layer, a membrane and a separation column.…”

Section: Strategies To Improve the Detection Selectivitymentioning

confidence: 99%

Approaches for selectivity improvement of conductometric gas sensors: an overview

Li,

Zhao,

Wang

et al. 2024

Sens. Diagn.

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Section: Strategies To Improve the Detection Selectivitymentioning

confidence: 99%

Approaches for selectivity improvement of conductometric gas sensors: an overview

Li,

Zhao,

Wang

et al. 2024

Sens. Diagn.

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“…Fateminia et al [ 59 ] used a Au-promoted Ce-Zr catalytic filter to enhance the selectivity of a Pt/SnO 2 methane sensor. Other catalytic filters such as Pt-CeO 2 [ 60 ], Au/MO x (M = Zn, Ti) [ 61 ], Pt-TiO 2 , Pt-CeO 2 , and Pt-ZrO 2 [ 62 ] have also been reported.…”

Section: Types Of Metal Oxide Semiconductors For Methane Sensingmentioning

confidence: 99%

Application of Semiconductor Metal Oxide in Chemiresistive Methane Gas Sensor: Recent Developments and Future Perspectives

Fu,

You,

et al. 2023

Molecules

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The application of semiconductor metal oxides in chemiresistive methane gas sensors has seen significant progress in recent years, driven by their promising sensitivity, miniaturization potential, and cost-effectiveness. This paper presents a comprehensive review of recent developments and future perspectives in this field. The main findings highlight the advancements in material science, sensor fabrication techniques, and integration methods that have led to enhanced methane-sensing capabilities. Notably, the incorporation of noble metal dopants, nanostructuring, and hybrid materials has significantly improved sensitivity and selectivity. Furthermore, innovative sensor fabrication techniques, such as thin-film deposition and screen printing, have enabled cost-effective and scalable production. The challenges and limitations facing metal oxide-based methane sensors were identified, including issues with sensitivity, selectivity, operating temperature, long-term stability, and response times. To address these challenges, advanced material science techniques were explored, leading to novel metal oxide materials with unique properties. Design improvements, such as integrated heating elements for precise temperature control, were investigated to enhance sensor stability. Additionally, data processing algorithms and machine learning methods were employed to improve selectivity and mitigate baseline drift. The recent developments in semiconductor metal oxide-based chemiresistive methane gas sensors show promising potential for practical applications. The improvements in sensitivity, selectivity, and stability achieved through material innovations and design modifications pave the way for real-world deployment. The integration of machine learning and data processing techniques further enhances the reliability and accuracy of methane detection. However, challenges remain, and future research should focus on overcoming the limitations to fully unlock the capabilities of these sensors. Green manufacturing practices should also be explored to align with increasing environmental consciousness. Overall, the advances in this field open up new opportunities for efficient methane monitoring, leak prevention, and environmental protection.

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“…Most point-sensing devices make use of calorimetry, chemiresistive responses from metal oxide semiconductors, − and electrochemical oxidation. , To be cost-effective as distributed sensors, devices need to have low power consumption, be inexpensive, exhibit minimal off-target interference, and be operable over a range of temperature and humidity levels. There have been multiple reviews on the development of methane sensors, − but trace methane detection is generally limited to elevated temperatures, which makes for high energy consumption. Other factors such as temperature, humidity, and cross sensitivity to interferants also negatively impact device performance .…”

Section: Introductionmentioning

confidence: 99%

Polymerization of Free-Volume-Promoting Monomers for Methane Absorption

Feng,

Luo,

Swager

2024

Macromolecules

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Cationic palladium catalysts containing N-heterocyclic carbene ligands were found to be effective catalysts for the chain-growth polymerization of monomers based on a fused [2.2.1]:[2.2.2] ring system. The shape-persistent monomers prevent dense packing of polymer chains and produce intrinsic microporosity in polymer solids. Gas absorption isotherm measurements reveal that surface areas greater than 1000 m 2 g −1 are produced in some materials. High molecular weight materials are produced, and catalyst optimization studies reveal that the steric bulk and electronic nature of the N-heterocyclic carbene ligands play dominant roles in determining the efficiency of the polymerization. The hydrocarbon nature of the microporous polymers enables methane absorption even at high humidity levels, which has anticipated utility in the creation of concentrators for robust point methane sensors.

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A catalytic filter based on Pt-CeO2 for selective methane detection with SnO2 sensors

Cited by 3 publications

References 36 publications

Approaches for selectivity improvement of conductometric gas sensors: an overview

Approaches for selectivity improvement of conductometric gas sensors: an overview

Application of Semiconductor Metal Oxide in Chemiresistive Methane Gas Sensor: Recent Developments and Future Perspectives

Polymerization of Free-Volume-Promoting Monomers for Methane Absorption

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