Adsorption properties of Ni cluster modified TiO2 (1 0 1) towards SF6 decomposition gases

被引：18

作者：

Gui, Yingang ^{[1
]}

Yang, Shun ^{[1
]}

Ji, Chang ^{[2
]}

Chen, Xianping ^{[3
,4
]}

机构：

[1] Southwest Univ, Coll Engn & Technol, Chongqing 400715, Peoples R China

[2] State Grid Chongqing Beibei Power Supply Co, Chongqing, Peoples R China

[3] Chongqing Univ, Coll Optoelect Engn, Chongqing, Peoples R China

[4] Chongqing Univ, Educ Minist China, Key Lab Optoelect Technol & Syst, Chongqing, Peoples R China

来源：

HIGH VOLTAGE | 2023年 / 8卷 / 01期

基金：

中国国家自然科学基金;

关键词：

PHOTOCATALYTIC ACTIVITY; SENSING PROPERTIES; ROOM-TEMPERATURE; NANOTUBE ARRAYS; MOLECULE SENSOR; PRODUCTS; DISCHARGES; MECHANISM; SURFACE; WSE2;

D O I：

10.1049/hve2.12262

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Online detection of insulation defects the decomposition products of SF6 plays a key role in ensuring the safe operation of the gas-insulated switchgear (GIS) equipment. The pristine TiO2 (1 0 1) modified by Ni cluster (1-3 Ni atoms) is used as a new gas-sensing material to study its gas-sensing characteristics to the characteristic decomposition products of SF6: SO2, SOF2, and SO2F2. Through density functional theory (DFT) calculation, we found that the modification of Ni clusters significantly improved the conductivity of pristine TiO2 (1 0 1) and the gas sensitivity of SF6 decomposition products. More importantly, the change of conductivity after gas adsorption lays a theoretical foundation for identifying the type and concentration of SF6 characteristic decomposition products and further judging the type of defects in GIS.

引用

页码：158 / 170

页数：13

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