High-performance ethanol gas sensor achieved by assembling In2O3-modified ZnO on multilayered Ti3C2Tx MXene

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2025-10-17 DOI:10.1007/s00604-025-07607-x

Yu Guan, Zijun Pu, Huiling Feng, Jiasheng Huang, Shuanglei Gao, Jingyu Yu, Song Lu

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Abstract

A novel gas-sensing material is reported by assembling In₂O₃-modified ZnO on multilayered Ti₃C₂T_x MXene with a high specific surface area (160.88 m²g⁻¹). The maximum response value (88.90) was achieved for 250 ppm ethanol at a low temperature of 150 °C, with a fast response/recovery time of 5.5/26 s. The detection limit reached 0.5 ppm with a response value as high as 1.45. This sensor also exhibited superior selectivity, reproducibility, and long-term stability. The results showed that the incorporation of In₂O₃ effectively reduced the operating temperature of the ZnO sensor, and the MXene composite significantly enhanced the response value and reduced the response/recovery time. The enhanced gas-sensing performance was mainly attributed to the high specific surface area and three-dimensional hybrid heterostructure. This paper provided valuable insights on the modification of ZnO-based sensing materials.

Graphical Abstract

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通过在多层Ti3C2Tx MXene上组装in2o3修饰的ZnO，实现了高性能乙醇气体传感器。

将in2o3修饰的ZnO组装在具有高比表面积（160.88 m2g-1）的多层Ti3C2Tx MXene上，制备了一种新型气敏材料。当乙醇浓度为250 ppm时，温度为150℃，响应值最高，为88.90，快速响应/恢复时间为5.5/26 s。检测限达到0.5 ppm，响应值高达1.45。该传感器还表现出优异的选择性、重复性和长期稳定性。结果表明，In2O3的掺入有效降低了ZnO传感器的工作温度，MXene复合材料显著提高了响应值，缩短了响应/恢复时间。气敏性能的增强主要归功于高比表面积和三维杂化异质结构。本文为zno基传感材料的改性提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.