二硫化钼
材料科学
兴奋剂
密度泛函理论
吸附
纳米花
钼
过渡金属
乙烯
热液循环
分子
电阻式触摸屏
金属
化学工程
纳米技术
化学物理
物理化学
纳米结构
光电子学
计算化学
有机化学
化学
复合材料
冶金
催化作用
计算机科学
工程类
计算机视觉
作者
Mousumi Pramanik,Bijoy Jana,Ankita Ghatak,Kaustuv Das
标识
DOI:10.1016/j.matchemphys.2024.128892
摘要
There is an immense need for inexpensive, accurate, and repeatable Ethylene sensors for post-harvest management. This paper presents resistive-type sensors based on transition metal (Ni, Fe, Co) doped molybdenum disulfide (MoS2) nanoflowers synthesized via simple hydrothermal route. A comparative study of sensing properties of pristine MoS2 and doped (Ni, Fe, Co)-MoS2 was performed in natural ambient conditions. The results reveal that Ni-doped MoS2 shows the optimized result in sensitivity as well as lower detection limit, compared to other three materials. Density functional theory (DFT) studies were carried out to evaluate interaction of ethylene molecules with MoS2 and doped MoS2. The sensing mechanism for all the materials was investigated in terms of adsorption energy, density of states (DOS), and charge transfer. The calculated results indicate large adsorption energy and higher charge transfer in the case of Ni-doped MoS2 supporting the experimental findings.
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