Hetero-structure La2O3-modified SnO2-Sn3O4 from tin anode slime for highly sensitive and ppb-Level formaldehyde detection

doi:10.1016/j.apsusc.2020.145825

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	Hetero-structure La2O3-modified SnO2-Sn3O4 from tin anode slime for highly sensitive and ppb-Level formaldehyde detection
	Yu, Huimin 1,2; Li, Jianzhong 1,2; Luo, Wenbin 1,2; Li, Zaiyuan 1,2; Tian, Yanwen 1,2; Yang, Zhongdong 1,2; Gao, Xuanwen 1,2; Liu, Hang 3
刊名	APPLIED SURFACE SCIENCE
	2020-05-30
卷号	513 页码:10
关键词	Recovered tin anode slime SnO2-Sn3O4 La2O3 Formaldehyde sensor Mixed valence
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2020.145825
通讯作者	Yu, Huimin(1610452@stu.neu.edu.cn) ; Li, Jianzhong(lijz@smm.neu.edu.cn)
英文摘要	Tin 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.
资助项目	Iron 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研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000523184600049
资助机构	Iron and Steel Joint Research Found of National Natural Science Foundation ; China Baowu Steel Group Corporation Limited ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137999]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yu, Huimin; Li, Jianzhong
作者单位	1.Northeastern Univ, Liaoning Key Lab Met Sensors & Technol, Shenyang 110819, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 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.