Mo-doped SnO2 nanotubes sensor with abundant oxygen vacancies for ethanol detection

doi:10.1016/j.snb.2021.130642

	Mo-doped SnO2 nanotubes sensor with abundant oxygen vacancies for ethanol detection
	Wang, Li 1; Ma, Shuyi 1; Li, Jianpeng 2,3; Wu, Andong 2; Luo, Didi 2; Yang, Tingting 1; Cao, Pengfei 1; Ma, Nina 1; Cai, Yahui 1
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2021-11-15
卷号	347 页码:11
关键词	Oxygen vacancy Mo doping SnO2 Gas sensor Electrostatic spinning
DOI	10.1016/j.snb.2021.130642
通讯作者	Ma, Shuyi(wangli5787@163.com)
英文摘要	This work describes a synthesizing method for Mo-doped SnO2 nanotubes (NTs) with uniform morphology by combining electrostatic spinning and air sintering. The method uses Mo ions to do substitutional doping of Sn ions in SnO2 to construct new lattice defects (such as oxygen vacancies), which provides more active sites for gas adsorption. Ethanol was taken as an example to study gas sensitivity characteristics of synthesized products. The analysis showed that 5 mol% of Mo-doped SnO2 nanotubes sensor exhibited the highest response (46.8) to 100 ppm ethanol at a lower optimum temperature (220 degrees C) and reduced the response/recovery time to 7/103 s. Also, it manifested excellent selectivity and long-term stability. The functionalized nanotubes structure and optimized parameters (oxygen vacancies concentration, metal vacancies defects, carrier concentration, catalytic sites, and base resistance increased) are the reasons for enhancing gas-sensing performance. This work provides direction that the optimal doping concentration of transition metal elements for metal-oxide NTs gas sensors can achieve the best sensing response.
资助项目	National Natural Science Foundation of China[11864034] ; National Natural Science Foundation of China[11964035] ; key research project of the Chinese Academy of Sciences[QYZDY-SSW-JSC019]
WOS关键词	GAS SENSOR ; ROOM-TEMPERATURE ; SENSING PERFORMANCE ; ZNO ; HYDROGEN ; NANOPARTICLES ; FILM ; HETEROJUNCTIONS ; NANOFIBERS ; DESIGN
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000697559500004
资助机构	National Natural Science Foundation of China ; key research project of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136521]
专题	中国科学院近代物理研究所
通讯作者	Ma, Shuyi
作者单位	1.Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Sch Phys Sci & Technol, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Li,Ma, Shuyi,Li, Jianpeng,et al. Mo-doped SnO2 nanotubes sensor with abundant oxygen vacancies for ethanol detection[J]. SENSORS AND ACTUATORS B-CHEMICAL,2021,347:11.
APA	Wang, Li.,Ma, Shuyi.,Li, Jianpeng.,Wu, Andong.,Luo, Didi.,...&Cai, Yahui.(2021).Mo-doped SnO2 nanotubes sensor with abundant oxygen vacancies for ethanol detection.SENSORS AND ACTUATORS B-CHEMICAL,347,11.
MLA	Wang, Li,et al."Mo-doped SnO2 nanotubes sensor with abundant oxygen vacancies for ethanol detection".SENSORS AND ACTUATORS B-CHEMICAL 347(2021):11.