Surface Science ( IF 2.1 ) Pub Date : 2021-06-16 , DOI: 10.1016/j.susc.2021.121893 Maciej J. Szary , Jakub A. Bąbelek , Dominik M. Florjan
Nitrogen dioxide () is a chemical compound produced in large amounts as a byproduct of combustion in vehicles and industrial processes. In its gas form, it is harmful to both human health and the environment causing acid rain, greenhouse effects, and a variety of respiratory symptoms. Hence, significant effort has been put into its detection and removal including studies on low-dimensional layered materials. Those have shown that molecules of have a good affinity for surfaces of molybdenum disulfide (). This allows for detection, however, the interaction is too weak for its effective accumulation or subsequent catalysis. Consequently, this work investigates, employing density functional theory, doping of for enhanced adsorption, and the extent to which it affects the molecule. The results show that the strength of molecule-substrate interaction depends on the changes in the orbital population of the dopant. This results in different adsorption configurations with varying energies and molecule-substrate charge transfers. The changes allow Cl- to be more suitable for detection, and Ge- accumulation of . Also, due to the interaction strength, the Si and P doped monolayers facilitate dissociation of into NO. Thus, tuning the potential of for surface catalysis.
中文翻译:
吸附和解离 上 掺杂 p 区元素
二氧化氮 ()是一种在车辆和工业过程中作为燃烧副产品而大量产生的化合物。其气体形式对人类健康和环境都有害,会导致酸雨、温室效应和各种呼吸道症状。因此,已经在其检测和去除方面投入了大量精力,包括对低维层状材料的研究。那些表明分子 对二硫化钼表面有良好的亲和力()。这允许然而,这种相互作用对于其有效积累或随后的催化作用来说太弱了。因此,这项工作调查,采用密度泛函理论,掺杂 为增强 吸附,以及它对分子的影响程度。结果表明,分子-基材相互作用的强度取决于掺杂剂轨道布居的变化。这导致具有不同能量和分子-底物电荷转移的不同吸附配置。这些变化允许 Cl- 更适合检测,Ge- 积累 . 此外,由于相互作用强度,Si 和 P 掺杂的单层促进了成 NO。因此,调整潜力 用于表面催化。