Marriam Zaqa , Numan Abbas , Sohail , Jingbo Zhang , R.X. Cao , X.H. Zeng , Eman Y.A. Musa , Zhong Wang , Chi Wang , Guoqing Wu , Qiuliang Wang
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Scanning electron microscopy (SEM) was used to examine its surface features. The purity and crystalline character of the samples were further confirmed via Raman spectroscopy, which shows that the peak intensity of the spectra increases with the increase of particle size owing to the rise in the force constant. UV spectroscopy was used to observe the energy band gap, which is found to decrease from 4.2 eV to 3.8 eV, and then it drops to 3.4 eV as the Mo content increases. This is reasonable because of the size-dependent attraction between metallic ions and conduction electrons. PL spectra concluded that Mo doping leads to the enhancement of the optical characteristics of BaO. Adding Mo to BaO also modifies the material’s thermal properties, potentially affecting its suitability for applications that require thermal durability. 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引用次数: 0
摘要
碱性金属氧化物因其丰富的资源、固有的导电性、光吸收性和热稳定性而受到广泛关注。本文采用直接共沉淀法获得了未掺杂的 BaO 和掺杂 Mo 的 BaO 纳米粒子。研究人员采用多种技术对合成的纳米粒子的结构、拉曼光谱、光学、热学和电学特性进行了表征。X 射线衍射 (XRD) 结果表明,钼成功地掺杂到了四方纳米晶 BaO 中。W-H 图显示,随着钼掺杂量从 2% 增加到 6%,晶粒尺寸不断增大,而晶格结构仍然井然有序,应变分布均匀。扫描电子显微镜(SEM)用于检查其表面特征。拉曼光谱进一步证实了样品的纯度和结晶特性。拉曼光谱显示,由于力常数的增加,光谱的峰值强度随着粒度的增加而增加。紫外光谱法用于观察能带间隙,发现随着钼含量的增加,能带间隙从 4.2 eV 下降到 3.8 eV,然后又下降到 3.4 eV。这是合理的,因为金属离子和传导电子之间的吸引力与尺寸有关。聚光光谱得出的结论是,掺杂钼可增强 BaO 的光学特性。在 BaO 中添加钼还会改变材料的热特性,从而可能影响其在需要热耐久性的应用中的适用性。这一发现表明,即使在 BaO 中轻微掺入 Mo4+,也会对其结构、热学、光学和电学特性产生重大影响。它丰富了有关 BaO 纳米粒子的现有知识体系,并为今后的研究奠定了基础。
Facile co-precipitation synthesis of nano-molybdenum-doped BaO nanoparticles and their physical characterization
Alkaline metal oxides have received significant attention recently due to their abundance, inherent conductivity, optical absorption, and thermal stability. Here, a straightforward co-precipitation method was employed to obtain both undoped BaO and Mo-doped BaO nanoparticles. Various techniques were used to characterize the synthesized nanoparticles’ structural, Raman spectral, optical, thermal, and electrical properties. X-ray diffraction (XRD) results revealed that Mo was successfully doped into tetragonal nanocrystalline BaO. The W-H plot showed that as Mo doping increases from 2 % to 6 %, the crystallite size grows while the lattice structure remains well-ordered with even strain distribution. Scanning electron microscopy (SEM) was used to examine its surface features. The purity and crystalline character of the samples were further confirmed via Raman spectroscopy, which shows that the peak intensity of the spectra increases with the increase of particle size owing to the rise in the force constant. UV spectroscopy was used to observe the energy band gap, which is found to decrease from 4.2 eV to 3.8 eV, and then it drops to 3.4 eV as the Mo content increases. This is reasonable because of the size-dependent attraction between metallic ions and conduction electrons. PL spectra concluded that Mo doping leads to the enhancement of the optical characteristics of BaO. Adding Mo to BaO also modifies the material’s thermal properties, potentially affecting its suitability for applications that require thermal durability. This finding exhibits that even slight doping of Mo4+ into BaO can significantly impact their structural, thermal, optical, and electrical characteristics. It enriches the existing body of knowledge of BaO nanoparticles and lays the foundation for its future research.
Results in PhysicsMATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY
CiteScore
8.70
自引率
9.40%
发文量
754
审稿时长
50 days
期刊介绍:
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