Hydrothermally engineered WO3 nanoflowers: A selective detection towards toxic NO2 gas

被引：31
|
作者：
Hingangavkar, Gajanan M. [1 ,2 ]
Navale, Yuvraj H. [2 ]
Nimbalkar, Tanaji M. [2 ]
Mulik, Ramesh N. [1 ]
Patil, Vikas B. [2 ]
机构：
[1] DBF Dayanand Coll Arts & Sci, Dept Phys, Solapur 413002, Maharashtra, India
[2] PAH Solapur Univ, Sch Phys Sci, Funct Mat Res Lab, Solapur 413255, Maharashtra, India
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2022年 / 371卷
关键词：
WO3; NFs; Hydrothermal; FESEM; XPS; NO2; sensor; SENSING PERFORMANCE; FACILE SYNTHESIS; NANORODS; SENSOR; NANOPARTICLES; NANOWIRES; H2S;
D O I：
10.1016/j.snb.2022.132584
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Nanoflowers (NFs) of WO3 is decorated on glass substrate by inexpensive hydrothermal method at very low temperatures (80 and 100 degrees C). The structural investigations are studied through X-ray diffraction and surface morphological study of WO3 NFs were examined using transmission electron microscopy, field emission scanning electron microscopy, Brunauer- Emmett-Teller, and X-ray photoelectron spectroscopy technique. WO3 NFs exhibited hexagonal crystal structure. The porous structure of WO3 NFs possessing a specific surface area of 38.13 m2/g. WO3 NFs (W6 sample) shows remarkable gas sensing towards toxic NO2 gas (225% response for 100 ppm at operating temperature 200 degrees C). WO3 NFs exhibits excellent reproducibility and stability (80%). An interaction mechanism of gas and WO3 NFs studied using an impedance spectroscopy.
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页数：7
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