SnS2/MXene derived TiO2 hybrid for ultra-fast room temperature NO2 gas sensing,Journal of Materials Chemistry C

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SnS2/MXene derived TiO2 hybrid for ultra-fast room temperature NO2 gas sensing
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2021-5-10 , DOI: 10.1039/d1tc00197c
Tianding Chen _{1,

2,

3,

4} , Wenhao Yan _{1,

2,

3,

4} , Ying Wang _{1,

2,

3,

4} , Jinli Li _{1,

2,

3,

4} , Haibo Hu _{1,

2,

3,

4} , Derek Ho _{1,

2,

3,

4}

Affiliation

Nitrogen dioxide (NO₂) is a prominent air pollutant that is harmful to both the environment and human health. Conventional NO₂ sensors that are designed to operate at room temperature often come with severe performance compromises, especially in dynamic performance. This paper presents a new method for achieving ultra-fast NO₂ gas sensing and recovery dynamics using a nanohybrid of SnS₂ and MXene derived TiO₂. With its unique 2D structure, MXene derived TiO₂ provides a unique platform on which SnS₂ can be decorated, forming heterojunctions as well as significantly enlarged surface area, both contributing to enhanced gas sensing properties. At room temperature operation, the fabricated nanohybrid based sensor exhibits a large response of 115 toward 1000 ppm NO₂ gas and an ultra-fast recovery of 10 s. This level of dynamic performance is unprecedented, rendering fast room temperature gas sensing a practical reality.

中文翻译：

SnS2 / MXene衍生的TiO2杂化物，用于超快室温NO2气体传感

二氧化氮（NO ₂）是一种主要的空气污染物，对环境和人体健康均有害。设计为在室温下运行的常规NO ₂传感器通常会严重损害性能，特别是在动态性能方面。本文提出了一种新的方法，该方法利用纳米杂化的SnS ₂和MXene衍生的TiO ₂实现超快的NO ₂气体感测和回收动力学。凭借其独特的2D结构，源自MXene的TiO ₂提供了一个独特的平台，在该平台上SnS ₂可以进行装饰，形成异质结以及显着扩大的表面积，均有助于增强气体感应性能。在室温操作下，所制造的基于纳米杂化的传感器对1000 ppm NO ₂气体显示115的大响应，并在10 s内超快恢复。这种动态性能水平是空前的，从而使快速的室温气体传感成为现实。

更新日期：2021-05-27

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