Synthesis and characterization of Y and Mn-doped ZnO nanoparticles: Structural, optical, morphological, and gas sensing investigations

被引：2
|
作者：
Priyanka, M. [1 ]
Reddy, G. Srinivas [1 ]
Reddy, T. Ranjeth Kumar [1 ]
Naveen, C. S. [1 ]
Kumar, C. N. Shyam [2 ]
Lodhe, Mangesh [3 ]
Kodli, Basanth Kumar [4 ]
Ramesh, C. S. [1 ,5 ]
机构：
[1] Presidency Univ, Sch Engn, Dept Phys, Bangalore 560064, Karnataka, India
[2] Natl Inst Technol, Dept Mat Sci & Engn, Calicut 673601, Kerala, India
[3] Maulana Azad Natl Inst Technol, Dept Mat & Met Engn, Bhopal 462003, India
[4] Vardhaman Coll Engn, Dept Phys, Hyderabad 501218, Telangana, India
[5] Presidency Univ, Dept Mech Engn, Bangalore 560064, Karnataka, India
来源：
PHYSICA B-CONDENSED MATTER | 2024年 / 687卷
关键词：
Nanoparticles; Gas sensor; Hydrogen; ZnO; Nanorods; Morphology; ZINC-OXIDE; HYDROGEN SENSOR; CO; NANOSTRUCTURES; MICROSTRUCTURE; PERFORMANCE; NANORODS; H-2;
D O I：
10.1016/j.physb.2024.416109
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
ZnO and Mn-doped Zn 0.92 Y 0.08-x Mn x O (x = 0, 0.01, 0.02, 0.04, 0.06) nanoparticles were synthesized hydrothermally and thoroughly characterized structurally, morphologically, and optically. X-ray diffraction (XRD) confirmed their crystalline wurtzite structure, with dopant concentration affecting lattice parameters, causing expansion or contraction. X-ray photoelectron spectroscopy (XPS) confirmed Mn and Y integration into the ZnO matrix. Scanning electron microscopy (SEM) showed morphological shifts from rods to flowers with increased Mn doping concentration. UV -visible absorption revealed optical band changes due to doping. Fourier transform infrared spectroscopy (FTIR) identified Zn -O, Y -O, and Mn -O bonds. Photoluminescence (PL) indicated intensity shifts with doping, suggesting dopant influence on defect -related emissions. Doped ZnO nanoparticles displayed superior hydrogen gas sensing, especially x = 0.04 at 250 degrees C, attributed to smaller size and structural changes.
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页数：10
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