Ultra-sensitive and fast response formaldehyde sensor based on La2O3-In2O3 beaded nanotubes at low temperature

被引：28
作者：
Zeng, Xiangan [1 ]
Liu, Li [1 ]
Lv, Yifeng [1 ]
Zhao, Bing [2 ]
Ju, Xiangnan [3 ]
Xu, Suyan [4 ]
Zhang, Jianxia [1 ]
Tian, Chunxia [1 ]
Sun, Dan [1 ]
Tang, Xiaonian [1 ]
机构：
[1] Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Dehui Nineteenth Middle Sch, Dehui 130325, Peoples R China
[3] Dehui First Middle Sch, Dehui 130300, Peoples R China
[4] Dehui Secondary Vocat Tech Sch, Dehui 130300, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2020年 / 746卷
关键词：
In2O3; La2O3; Beaded nanotubes; Formaldehyde sensing properties; IN2O3 HOLLOW MICROSPHERES; GAS SENSOR; SENSING PROPERTIES; CONTROLLABLE SYNTHESIS; FAST RESPONSE/RECOVERY; FABRICATION; NANORODS; PLATFORM; AMMONIA; NIO;
D O I：
10.1016/j.cplett.2020.137289
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
La2O3-In2O3 composited beaded nanotubes (LIBNTs) and pure In2O3 nanotubes (INTs) were fabricated via a simple electrospinning method. By means of SEM, XRD and XPS analysis, we determined the surface structure, crystal phase and chemical properties of the materials. By test, we determined that the optimum operating temperature of LIBNTs-based sensor was a low temperature of 128 degrees C. The test results also revealed that LIBNTsbased sensor has an ultra-sensitive response to formaldehyde (101.9/50 ppm) and a faster response/recovery property (3 s and 19 s) compared with INTs-based sensor. The LIBNTs-based sensor also exhibited good linearity, repeatability and selectivity.
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页数：7
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