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Hetero-structure La2O3-modified SnO2-Sn3O4 from tin anode slime for highly sensitive and ppb-Level formaldehyde detection
Yu, Huimin1,2; Li, Jianzhong1,2; Luo, Wenbin1,2; Li, Zaiyuan1,2; Tian, Yanwen1,2; Yang, Zhongdong1,2; Gao, Xuanwen1,2; Liu, Hang3
Corresponding AuthorYu, Huimin(1610452@stu.neu.edu.cn) ; Li, Jianzhong(lijz@smm.neu.edu.cn)
2020-05-30
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume513Pages:10
AbstractTin oxides SnO2-Sn3O4 was recovered from fin anode slime via pretreatment process, and creatively applied in ultrasensitive formaldehyde detection by doping La2O3 using high energy ball milling method. Composition, morphology, structure and chemical state of the samples were characterized in detail by XRF, FT-IR, XRD, SEM, HRTEM, XPS techniques. Gas sensing results showed that 1.0 cot. % La2O3-modified SnO2-Sn3O4 revealed a prominently ultrahigh sensitivity of 117.27 towards 100 ppm formaldehyde, which was 4.9 times higher than pristine SnO2-Sn3O4, as well as rapid response/recovery speed (3 s/3 s) at 220 degrees C. Furthermore, the sensor was also found to exhibit an ultra-low detection limit of 80 ppb HCHO (S = 1.44). Outstanding selectivity, great repeatability to ppb-level HCHO and remarkable long-term stability were also displayed. The effect of doping appropriate amount of La2O3 and the possible sensing mechanism were investigated particularly. Complex hetero-structures, mixed-valence and catalytic activity of La2O3 made pivotal contributions to the improvement of HCHO sensing properties. The ultimate concept is to realize cycling economy, not only to develop a promising excellent performance formaldehyde sensor from industrial waste to increase the economic efficiency, but also to make a great contribution to environment protection and increase the value of fin slime.
KeywordRecovered tin anode slime SnO2-Sn3O4 La2O3 Formaldehyde sensor Mixed valence
Funding OrganizationIron and Steel Joint Research Found of National Natural Science Foundation ; China Baowu Steel Group Corporation Limited ; National Natural Science Foundation of China
DOI10.1016/j.apsusc.2020.145825
Indexed BySCI
Language英语
Funding ProjectIron and Steel Joint Research Found of National Natural Science Foundation ; China Baowu Steel Group Corporation Limited[U1760118] ; National Natural Science Foundation of China[51974069]
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000523184600049
PublisherELSEVIER
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138000
Collection中国科学院金属研究所
Corresponding AuthorYu, Huimin; Li, Jianzhong
Affiliation1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
2.Northeastern Univ, Liaoning Key Lab Met Sensors & Technol, Shenyang 110819, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yu, Huimin,Li, Jianzhong,Luo, Wenbin,et al. Hetero-structure La2O3-modified SnO2-Sn3O4 from tin anode slime for highly sensitive and ppb-Level formaldehyde detection[J]. APPLIED SURFACE SCIENCE,2020,513:10.
APA Yu, Huimin.,Li, Jianzhong.,Luo, Wenbin.,Li, Zaiyuan.,Tian, Yanwen.,...&Liu, Hang.(2020).Hetero-structure La2O3-modified SnO2-Sn3O4 from tin anode slime for highly sensitive and ppb-Level formaldehyde detection.APPLIED SURFACE SCIENCE,513,10.
MLA Yu, Huimin,et al."Hetero-structure La2O3-modified SnO2-Sn3O4 from tin anode slime for highly sensitive and ppb-Level formaldehyde detection".APPLIED SURFACE SCIENCE 513(2020):10.
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