纳米棒
材料科学
带隙
微晶
结构精修
兴奋剂
分析化学(期刊)
晶格常数
扫描电子显微镜
光谱学
结晶学
晶体结构
衍射
纳米技术
光学
光电子学
化学
复合材料
冶金
物理
色谱法
量子力学
作者
Sapan Kumar Sen,Mollika Paul,Md. Sakauat Hasan Sakib,M.S. Manir,Karimul Hoque,Robi Sankar Hawlader,Mahmudul Hasan,G.G. Biswas
标识
DOI:10.1016/j.ceramint.2024.01.057
摘要
Pure and Mn-doped h-MoO3 nanorods with varying doping concentrations (1, 3, 5 M%) have been synthesized via the hydrothermal method. Subsequently, the impacts of Mn incorporation on the microstructural and optical properties of the synthesized nanorods have been examined. The X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) have confirmed the metastable hexagonal phase (h-MoO3) and rod-type morphology, respectively. To explore various crystallographic features, such as crystallite size and lattice strain, the Scherrer formula, Williamson-Hall (W–H), and Halder-Wagner (H–W) techniques were used. In addition, the dislocation density, lattice parameters, and unit cell volume have been evaluated in conjunction with XRD analysis by Rietveld refinement. The optical bandgap was estimated from UV–vis spectroscopy utilizing the Kubelka-Munk (K-M) function and the Tauc relation. The estimated bandgap values ranged from 3.05 to 3.09 eV for the K-M function and 2.92–2.98 eV for the Tauc relation. The optical bandgap increased as the concentration of Mn increased to 3 M% and then decreased. Both approaches showed analogous optical bandgap variation.
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