基于Pt-Co3O4@ZnO双mof结构纳米纤维的高性能H2S气体传感器的简易合成与优化

IF 4.3 2区综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Journal Pub Date : 2025-03-24 DOI:10.1109/JSEN.2025.3551329

Xiaoyan Song;Hao Wang;Zhaoyang Pan;Wanchun Huang;Zhipeng Wang;Jinfeng Xing

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引用次数: 0

摘要

金属有机骨架（MOF）材料被认为是制备多孔金属氧化物用作气敏材料的优秀模板。本文提出了一种简单的合成策略，制备了具有MOF-on-MOF结构和贵金属的Pt-Co3O4@ZnO中空多孔纳米纤维，用于气敏应用。用这种独特的纳米材料制成的传感器对H2S气体具有快速响应、低检测限（LOD）、高选择性和良好稳定性。值得注意的是，使用Pt-Co3O4/ZnO纳米纤维的传感器的气体响应是使用Co3O4/ZnO纳米纤维的传感器的3倍，最佳工作温度降低了125~^{\circ}$ c。此外，详细提出了气敏机理，基于第一原理的理论计算进一步揭示了Pt-Co3O4/ZnO纳米纤维对H2S的性能增强。本研究提供了一种用于高性能气敏应用的具有丰富孔隙和高表面积的贵金属滴入双mofs纳米纤维的制备策略。

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Facile Synthesis and Optimization of High-Performance H2S Gas Sensors Based on Pt-Co3O4@ZnO Nanofibers With Dual-MOF Structure

Metal-organic framework (MOF) materials are recognized as outstanding templates for preparing porous metal oxides used as gas-sensitive materials. Here, a facile synthesis strategy is proposed to prepare Pt-Co₃O₄@ZnO hollow porous nanofibers with MOF-on-MOF structure and noble metal for gas-sensing applications. Sensors fabricated with this unique nanomaterial show fast response, low detection limit (LOD), high selectivity, and good stability to H₂S gas. Notably, the gas response of the sensor with Pt-Co₃O₄/ZnO nanofibers is three times that for the sensor with Co₃O₄/ZnO, and the optimal operating temperature is reduced by

$125~^{\circ }$

C. Furthermore, the gas-sensing mechanism is proposed in detail, and theoretical calculations based on the first principles further reveal the performance enhancement of Pt-Co₃O₄/ZnO nanofibers to H₂S. This study offers a strategy for fabricating noble metal-dropping dual MOFs-based nanofibers with abundant pores and high surface area for high-performance gas-sensing applications.

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来源期刊

IEEE Sensors Journal 工程技术-工程：电子与电气

CiteScore

7.70

自引率

14.00%

发文量

2058

审稿时长

5.2 months

期刊介绍： The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice