V2O5-rGO based chemiresistive gas sensor for NO2 detection

被引：9
|
作者：
Babar, B. M. [1 ]
Sutar, S. H. [1 ]
Mujawar, S. H. [1 ]
Patil, S. S. [1 ]
Babar, U. D. [2 ]
Pawar, U. T. [3 ]
Kadam, P. M. [3 ]
Patil, P. S. [4 ]
Kadam, L. D. [5 ]
机构：
[1] Yashavantrao Chavan Inst Sci, Dept Phys, Satara 415001, Maharashtra, India
[2] New Coll, Kolhapur 416005, Maharashtra, India
[3] Smt Kasturbai Walchand Coll, Dept Elect, Sangli 416416, Maharashtra, India
[4] Shivaji Univ, Dept Phys, Thin Film Mat Lab, Kolhapur 416 004, Maharashtra, India
[5] Rajarshi Chhatrapati Shahu Coll, Kolhapur 416005, Maharashtra, India
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2023年 / 298卷
关键词：
Vanadium Pentoxide; Reduced graphene oxide; Hydrothermal method; Gas sensor; SENSING PROPERTIES; GRAPHENE OXIDE; SURFACE-AREA; TEMPERATURE; PHOTOLUMINESCENCE; NANOSTRUCTURES; NANOCOMPOSITES; CATHODE;
D O I：
10.1016/j.mseb.2023.116827
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Current study displays an actual hydrothermal synthesis of V2O5-rGO composite and further investigates how changes in rGO composition in V2O5-rGO composites affected their NO2 sensing property. The orthorhombic crystal structure is confirmed by XRD and Raman techniques, and the optimum proportion of disorders in the composite as a result of rGO is also confirmed. Porous nanostructure is observed in SEM images. The C, V, and O present in the composite are confirmed by the XPS results, along with a fluctuation in V4+/V5+. The BET technique was used to measure specific surface area (25.91 m(2)g(-1)) and pore radius (6.4140 nm). A prominent PL peak confirm presence of oxygen vacancies. At 150 degrees C, gas sensing for 100 ppm concentration of NO2 gas revealed improved response about 121.85%. The calculated response/ recovery time for sample consisting 10 mg rGO are 39 and 262 s, respectively. Along with response, sample C shows excellent reproducibility and good stability.
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页数：14
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