纳米复合材料
材料科学
异质结
多孔性
MXenes公司
纳米技术
碳化钛
化学工程
碳化物
复合材料
光电子学
工程类
作者
Qui Thanh Hoai Ta,Deepika Thakur,Jin‐Seo Noh
出处
期刊:Micromachines
[MDPI AG]
日期:2022-10-11
卷期号:13 (10): 1710-1710
被引量:14
摘要
A representative of titanium carbide MXene, Ti3C2Tx is a promising candidate for high performance gas sensing and has attracted significant attention. However, MXene naturally has a multilayer structure with low porosity, which prevents its gas-sensing activity. Zinc oxide (ZnO) has long been utilized as a gas detector. Despite its good response to multiple gases, high operation temperature has limited its widespread use as a gas-sensing material. In this study, a room-temperature toxic gas sensor was prepared from ZnO/Ti3C2Tx MXene nanocomposite consisting of 2D few-layered MXene and 1D ZnO nanoparticles. A simple technique for synthesizing the nanocomposite was established. The physicochemical properties of the nanocomposite were fine-controlled with more active sites and higher porosity. The sensitivity and gas-selectivity of the sensing material were closely examined. The nanocomposite showed enhanced response and recovery behaviors to toxic gases, which outperformed pure Ti3C2Tx MXene and pure ZnO. This study offers a practical strategy by which to increase the gas-sensing performance of Ti3C2Tx MXene, and expands comprehensive understanding of the gas-sensing process of ZnO/Ti3C2Tx p-n heterostructure.
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