de Moura Ana P, de Oliveira Larissa H, Rosa Ieda L V, Xavier Camila S, Lisboa-Filho Paulo N, Li Máximo S, La Porta Felipe A, Longo Elson, Varela José A
Instituto de Química, UNESP, 14800-900 Araraquara, SP, Brazil.
Departamento de Química, UFSCar, 13565-905 São Carlos, SP, Brazil.
ScientificWorldJournal. 2015;2015:315084. doi: 10.1155/2015/315084. Epub 2015 Feb 23.
We report on the structural, optical, and magnetic properties of α,β-NiMoO4 nanorods synthesized by annealing the NiMoO4:nH2O precursor at 600°C for 10 minutes in a domestic microwave. The crystalline structure properties of α,β-NiMoO4 were investigated using X-ray diffraction (XRD), Fourier transform infrared (FTIR), and Raman (FT-Raman) spectroscopies. The particle morphologies and size distributions were identified by field emission microscopy (FE-SEM). Experimental data were obtained by magnetization measurements for different applied magnetic fields. Optical properties were analyzed by ultraviolet-visible (UV-vis) and photoluminescence (PL) measurements. Our results revealed that the oxygen atoms occupy different positions and are very disturbed in the lattice and exhibit a particular characteristic related to differences in the length of the chemical bonds (Ni-O and Mo-O) of the cluster structure or defect densities in the crystalline α,β-NiMoO4 nanorods, which are the key to a deeper understanding of the exploitable physical and chemical properties in this study.
我们报道了通过在家用微波炉中于600°C将NiMoO4:nH2O前驱体退火10分钟合成的α,β-NiMoO4纳米棒的结构、光学和磁性特性。使用X射线衍射（XRD）、傅里叶变换红外（FTIR）和拉曼（FT-拉曼）光谱对α,β-NiMoO4的晶体结构特性进行了研究。通过场发射显微镜（FE-SEM）确定了颗粒形态和尺寸分布。通过对不同施加磁场进行磁化测量获得了实验数据。通过紫外可见（UV-vis）和光致发光（PL）测量分析了光学特性。我们的结果表明，氧原子占据不同位置且在晶格中受到很大干扰，并表现出与簇结构中化学键（Ni-O和Mo-O）长度差异或晶体α,β-NiMoO4纳米棒中的缺陷密度相关的特定特征，这是深入理解本研究中可利用的物理和化学性质的关键。
