检测液化石油气和湿度的三维中空介孔 α-Fe2O3 传感器，用于诊断睡眠呼吸暂停综合征

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-21 DOI:10.1016/j.ceramint.2024.09.276

Priya Malik , Rakesh Malik , Surender Duhan

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引用次数: 0

摘要

利用介孔材料设计的传感器已经引起了人们的极大兴趣；然而，这些传感器主要用于检测单一的分析物。在本研究中，我们采用纳米铸造工艺成功合成了一种三维（3D）中空介孔 α-Fe2O3，用于感测液化石油气和湿度。本研究获得的 α-Fe2O3 保持了 MCM-48 的立方框架结构，展示了一种介孔和中空结构。研究考察了介孔 α-Fe2O3 在不同工作温度（170-210 °C）下的液化石油气（LPG）传感特性。在 190 °C 时，气体传感响应达到 99.3 %，响应/恢复时间分别为 11.79 秒和 0.84 秒。使用介孔 α- Fe2O3 评估了湿度传感器在室温下的特性，相对湿度（RH%）范围为 11% 至 98%。介孔 α- Fe2O3 作为湿度传感器的响应/恢复时间分别为 6.3 秒和 7.2 秒。传感器的高灵敏度、可忽略不计的滞后、出色的可重复性和 30 天的稳定性使其成为实时微妙呼吸监测的理想候选材料。同时，介孔 α-Fe2O3 湿度传感器还可用于评估睡眠呼吸暂停综合征。

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3D hollow mesoporous α-Fe2O3 sensor detecting liquified petroleum gas and humidity for diagnosing sleep hypopnea-apnea syndrome

Sensors utilizing mesoporous materials have garnered significant interest; however, they are primarily designed for detecting a single analyte. In this study, we successfully synthesized a three-dimensional (3D) hollow mesoporous α-Fe₂O₃ using a nanocasting process for the purpose of sensing LPG and humidity. The α-Fe₂O₃ obtained in this study maintained the cubic framework structure of MCM-48, demonstrating a mesoporous and hollow architecture. The Liquified Petroleum Gas (LPG) sensing characteristics of mesoporous α-Fe₂O₃ were examined at different operating temperatures (170–210 °C). The gas sensing response was optimized 99.3 % at 190 °C and the response/recovery time comes out to be 11.79 s & 0.84 s respectively. The humidity sensor's traits were evaluated at room temperature, with relative humidity (RH%) ranging from 11 % to 98 %, using mesoporous α- Fe₂O₃. The response/recovery time of mesoporous α-Fe₂O₃ as a humidity sensor comes out to be 6.3 s & 7.2 s respectively. The highly sensitive nature of the sensor along with negligible hysteresis, excellent repeatability and considerable stability for 30 days makes it a promisable candidate for real-time subtle respiration monitoring. Meanwhile, mesoporous α-Fe₂O₃ humidity sensor is also utilized for evaluation of sleep hypopnea-apnea syndrome.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.