Sensitivity enhancement of ammonia gas sensor based on NiFe2O4/ rGO nanocomposite

被引：5
作者：
Ganesan, Marimuthu [1 ,2 ]
Ganapathi, Bharathi [3 ]
Parasuraman, Balaji [1 ]
Thangavelu, Pazhanivel [1 ]
机构：
[1] Periyar Univ, Dept Phys, Smart Mat Interface Lab, Salem 11, Tamilnadu, India
[2] Mahendra Coll Engn, Dept Phys, Salem 636106, Tamilnadu, India
[3] Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst Guangdong Prov, Shenzhen 518060, Guangdong, Peoples R China
来源：
CHEMICAL PHYSICS IMPACT | 2024年 / 8卷
关键词：
Ammonia; Gas sensor; Environment; NANOPARTICLES; CU; NANOSTRUCTURES; TEMPERATURE; PERFORMANCE; NI; CO;
D O I：
10.1016/j.chphi.2024.100616
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：
The NiFe2O4/rGO nanocomposite was prepared by a simple impregnation method and its nanostructural and morphological properties were characterized using XRD, FTIR, FESEM and EDX. The gas sensors were constructed using pure NiFe2O4 and NiFe2O4/rGO composit e samples and their gas sensing properties were examined. The gas sensing performances of NiFe2O4/rGO nanocomposite was measured by chemicapative method. The measured sensitivity values are 1.3 and 1.7 for pure and composite samples, respectively. The measured response/recovery times of as-prepared NiFe2O4/rGO sample for 100 ppm of ammonia gas is 55 s and 40 s , respectively. The chemically reduced rGO shows promise as a supporting material for the advancement of next-generation low-power, portable ammonia sensors.
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页数：7
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