Nitrogen dioxide and ammonia gas molecules interaction studies on phosphorene nanosheet - a DFT investigation

被引:11
|
作者
Nagarajan, V [1 ]
Chandiramouli, R. [1 ]
机构
[1] Shanmugha Arts Sci Technol & Res Acad SASTRA Univ, Sch Elect & Elect Engn, Thanjavur 613401, Tamil Nadu, India
关键词
phosphorene; nanosheet; adsorption; NO2; NH3; formation energy; ADSORPTION BEHAVIOR; ALCOHOL MOLECULES; NO2; MOLECULES; 1ST-PRINCIPLES; NANOTUBES; GRAPHENES; SENSORS; MOS2; NH3; AL;
D O I
10.5488/CMP.22.13703
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The adsorption behaviour of hazardous gas molecules, namely nitrogen dioxide (NO2) and ammonia (NH3), on phosphorene nanosheet (PNS) was explored by means of ab initio technique. To improve the structural solidity of pristine PNS, we have introduced the passivation of hydrogen and fluorine at the terminated edge. The structural solidity of both hydrogen and fluorine passivated PNS is verified in terms of formation energy. The main objective of this research work is to probe NO2 and NH3 gases using PNS as a base sensing material. The adsorption of various preferential adsorption sites of these gas molecules is studied in accordance with the average HOMO-LUMO gap changes, natural-bond-orbital (NBO) charge transfer, HOMO-LUMO gap, and adsorption energy. Notably, the negative value of adsorption energy is found upon the adsorption of NO2 and NH3 on PNS and it is in the range of -1.36 to -2.45 eV. The findings of the present research work recommend that the hydrogenated and fluorinated PNS can be effectively used as a chemical sensor against NO2 and NH3 molecules.
引用
收藏
页数:15
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