基于 Bi0.9Er0.1FeO3/In2O3 复合材料的高灵敏乙醇气体传感器

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

Ceramics International Pub Date : 2024-09-22 DOI:10.1016/j.ceramint.2024.09.291

Xiaolian Liu, Xiaolin You, Zhipeng Sun, Guohua Cao, Junjun Wang, Lanlan Guo, Guodong Wang

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引用次数: 0

摘要

本研究采用溶胶-凝胶法制备了 Bi0.9Er0.1FeO3/In2O3 复合材料。对其结构、形貌、元素化合价和乙醇气体传感性能进行了表征和研究。在 330 ℃ 时，Bi0.9Er0.1FeO3/In2O3 复合传感器对 100 ppm 乙醇的响应为 112，大约是 Bi0.9Er0.1FeO3 的 7 倍。传感器的响应/恢复时间分别为 5 秒/75 秒，同时还具有良好的选择性、抗干扰性和稳定性。气体传感性能的提高可能是由于 Bi0.9Er0.1FeO3 纳米粒子和 In2O3 纳米粒子之间的异质结。同时，Bi0.9Er0.1FeO3/In2O3 复合材料具有更大的比表面积，从而增加了吸附位点，更有效地支持反应。

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Highly sensitive ethanol gas sensors based on Bi0.9Er0.1FeO3/In2O3 composites

In this study, Bi_0.9Er_0.1FeO₃/In₂O₃ composites were prepared by sol-gel method. The structure, morphology, elemental valence and ethanol gas sensing performance were characterized and studied. At 330 °C, Bi_0.9Er_0.1FeO₃/In₂O₃ composite sensor exhibits a response of 112 when exposed to 100 ppm ethanol, roughly 7 times higher than Bi_0.9Er_0.1FeO₃. The response/recovery time of the sensor is 5 s/75 s, alongside good selectivity, anti-interference and stability. The improved performance in gas sensing may be ascribed to heterojunctions between Bi_0.9Er_0.1FeO₃ nanoparticles and In₂O₃ nanoparticles. Meanwhile, Bi_0.9Er_0.1FeO₃/In₂O₃ composites have larger specific surface area, which increases adsorption sites and supports reactions more effectively.

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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.