Density Functional Theory-Based Adsorption Studies of ClO2 and Its Decomposition Products on Defective and Metal-Doped Graphene

被引:0
|
作者
Zhu, Pengcheng [1 ]
Yu, Weiyao [1 ]
Zhao, Jiaming [1 ]
Zhu, Yongliang [1 ]
机构
[1] Jiangsu Univ Sci & Technol, Sch Mech Engn, 666 Changhui Rd, Zhenjiang 212100, Peoples R China
来源
关键词
adsorption; doping; graphenes; sensors; CHLORINE DIOXIDE; DFT; COMPONENTS; WATER; MONOLAYER; VACANCY; SURFACE;
D O I
10.1002/pssb.202300553
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Biomass discharged from primary industries can be converted into methane by fermentation. This methane is used for generating electricity with solid oxide fuel cells (SOFCs). This methane fermentation provides H2S, which reduces the efficiency of SOFCs even at a level as low as a few parts per million. It has been experimentally reported that a nitrogen (N)-doped graphene-based material known as pyridinic N removes H2S via an oxidation reaction compared with another graphene-based material known as oxidized N. To understand this experimental result, we investigated H2S adsorption on pyridinic N and oxidized N by a density functional theory analysis and further examined the activation barrier of dissociation reactions. We found that the adsorption of H2S on pyridinic N is more stable than that on oxidized N. In addition, the H2S dissociation reaction occurs only on pyridinic N.
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页数:11
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