材料科学
密度泛函理论
纳米技术
过渡金属
GSM演进的增强数据速率
化学物理
计算机科学
化学
计算化学
催化作用
生物化学
电信
作者
Yeon Hoo Kim,Ki Chang Kwon,Seunghyun Kang,Chang‐Yeon Kim,Tae Hoon Kim,Seungpyo Hong,Seo Yun Park,Jun Min Suh,Min‐Ju Choi,Seungwu Han,Ho Won Jang
出处
期刊:ACS Sensors
[American Chemical Society]
日期:2019-07-24
卷期号:4 (9): 2395-2402
被引量:99
标识
DOI:10.1021/acssensors.9b00992
摘要
Transition metal dichalcogenides (TMDs) have attracted enormous attention in diverse research fields. Especially, gas sensors are considered in a promising application exploiting TMDs. However, the studies are confined to only major TMDs such as MoS2 and WS2. Particularly, the chemoresistive sensing properties of two-dimensional (2D) NbS2 have never been explored. For the first time, we report room temperature NO2 sensing characteristics of 2D NbS2 nanosheets and the sensing mechanisms using first-principles calculations based on density functional theory. The results demonstrate that the NbS2 edges possessing different configurations depending on synthetic conditions differ in the sensing ability of the TMD nanosheets. This study not only broadens the potential of 2D NbS2 for gas sensing applications, but also presents the important role of edge configuration of TMDs depending on synthetic conditions for further studies.
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