Pub Date : 2024-10-07DOI: 10.1109/JSEN.2024.3471830
Long Huang;Detao Lu;Wen Zeng;Qu Zhou
As the main monitoring method for the operation status and faults of gas-insulated equipment (GIE) equipment, SF6 decomposition gas analysis technology has been continuously upgraded, and the development of new gas-sensitive materials has always been one of the core breakthroughs. Herin, it is proposed the NiO and Ag2 O metal oxide-doped Janus tin sulfide selenide (SnSSe) (MOS-SnSSe) monolayers as prospective sensing materials for detection of four typical decomposition gases, namely, HF, SO2, SOF2, and SO2F2, to provide an option for upgrading the gas-sensitive units. The results suggest that the NiO and Ag2 O dopants are more inclined to stick to the S-surface of intrinsic SnSSe monolayer. Furthermore, the Mulliken analysis reveals the function of carrier-migration bridge of the NiO and Ag2 O dopants in the gas-sensing reaction that encourages the bidirectional migration of charges between the gas species and the SnSSe surface. The change in energy band confirms the adjusted electronic performances of MOS-SnSSe monolayers upon adsorbing gases, and the density of state redistribution in such four gas systems verifies the chemisorption of HF, SO2, SOF2, and SO2F2 on NiO-SnSSe monolayer, the chemisorption of HF and SO2 on Ag2 O-SnSSe monolayer, and the physisorption of SOF2 and SO2F2 on Ag2 O-SnSSe monolayer. Furthermore, our outcome demonstrates that the NiO-SnSSe monolayer is a feasible candidate for an SO2 resistive sensor operating at 458 K, while Ag2 O-SnSSe monolayer can serve as both a work-function-type sensor for such four gas SPICEs and a scavenger for SO2. These discoveries in this research expose the admirable gas sensitivity potentiality of the SnSSe-based system and the special attribute of the Janus community, which we anticipate could motivate more cutting-edge research in the industry of gas sensing.
{"title":"Favorable Adsorption and Detection Properties of Metal Oxides (NiO and Ag₂O) Modified Janus SnSSe Monolayer Toward SF₆ Decomposition Gases in a Gas-Insulated Equipment","authors":"Long Huang;Detao Lu;Wen Zeng;Qu Zhou","doi":"10.1109/JSEN.2024.3471830","DOIUrl":"https://doi.org/10.1109/JSEN.2024.3471830","url":null,"abstract":"As the main monitoring method for the operation status and faults of gas-insulated equipment (GIE) equipment, SF6 decomposition gas analysis technology has been continuously upgraded, and the development of new gas-sensitive materials has always been one of the core breakthroughs. Herin, it is proposed the NiO and Ag2 O metal oxide-doped Janus tin sulfide selenide (SnSSe) (MOS-SnSSe) monolayers as prospective sensing materials for detection of four typical decomposition gases, namely, HF, SO2, SOF2, and SO2F2, to provide an option for upgrading the gas-sensitive units. The results suggest that the NiO and Ag2 O dopants are more inclined to stick to the S-surface of intrinsic SnSSe monolayer. Furthermore, the Mulliken analysis reveals the function of carrier-migration bridge of the NiO and Ag2 O dopants in the gas-sensing reaction that encourages the bidirectional migration of charges between the gas species and the SnSSe surface. The change in energy band confirms the adjusted electronic performances of MOS-SnSSe monolayers upon adsorbing gases, and the density of state redistribution in such four gas systems verifies the chemisorption of HF, SO2, SOF2, and SO2F2 on NiO-SnSSe monolayer, the chemisorption of HF and SO2 on Ag2 O-SnSSe monolayer, and the physisorption of SOF2 and SO2F2 on Ag2 O-SnSSe monolayer. Furthermore, our outcome demonstrates that the NiO-SnSSe monolayer is a feasible candidate for an SO2 resistive sensor operating at 458 K, while Ag2 O-SnSSe monolayer can serve as both a work-function-type sensor for such four gas SPICEs and a scavenger for SO2. These discoveries in this research expose the admirable gas sensitivity potentiality of the SnSSe-based system and the special attribute of the Janus community, which we anticipate could motivate more cutting-edge research in the industry of gas sensing.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"24 22","pages":"37042-37052"},"PeriodicalIF":4.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-07DOI: 10.1109/JSEN.2024.3468318
Linh Huynh Thi Thuy;Phu Nguyen Dang;Hung Cao;Anh H. Nguyen;Jung-Chih Chiao;Chun-Ping Jen;Loc Do Quang;Trinh Chu Duc;Tung Thanh Bui
Lacking effective treatment, white spot syndrome virus (WSSV) causes mass mortality in farmed shrimp, significantly damaging the shrimp industry worldwide. To enable early detection and diagnosis of this disease, we have demonstrated an electrochemical immunosensor to detect the VP28 antigen, a key envelope protein of this virus. First, gold nanoparticles (AuNPs) were electrodeposited on the sensor’s carbon surface to enhance both its sensitivity and its capability to form a self-assembled monolayer (SAM). Subsequently, an SAM using 11-Mercaptoundecanoic acid was coated as an intermediary layer for immobilizing VP28 antibodies. The specific interaction of VP28 antigen-antibody, confirmed by Western Blot, impeded electrons transfer, leading to an increase in charge transfer resistance. Cyclic voltammetry (CV) was utilized to deposit AuNPs and combined with electrochemical impedance spectroscopy (EIS) to characterize the modification of the sensor’s electrode surface through changes in electric current and impedance. The scanning electron microscope (SEM) results showed that nanosized gold particles were uniformly dispersed on the carbon electrode surface. Electric measurement results showed that the change in charge transfer resistance ( $Delta {R}_{text {CT}}$