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.

引用

页数：7

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