Magnesium oxide nanoparticles were synthesized by sol–gel method using polyvinyl alcohol. The structure, morphology, and optical properties of the MgO crystalline were characterized using XRD, SEM, TEM, UV–visible absorption, and photoluminescence (PL) spectroscopy. The XRD results confirmed the formation of the MgO phase. The crystallite was found to be an average of 25 nm in size, as evaluated by the XRD line broadening method. Surprisingly, TEM bright-field images, selected-area electron diffraction (SAED) confirmed the formation of MgO crystalline. The energy-dispersive spectroscopy (EDS) spectra of MgO nanosheets showed the presence and distribution of Mg and O elements. Moreover, estimated optical energy band gap values of 3.65–3.75 eV were obtained. PL spectra revealed that the blue and green emissions centered around 427 and 515 nm, respectively. Finally, the results revealed that PVA acted as a precursor template to encourage the MgO nanosheets and exhibit semiconductive properties.

使用聚乙烯醇通过溶胶-凝胶法合成氧化镁纳米颗粒。使用 XRD、SEM、TEM、紫外-可见吸收和光致发光 (PL) 光谱表征 MgO 晶体的结构、形态和光学性质。XRD结果证实了MgO相的形成。经XRD谱线展宽法评估，发现晶粒的平均尺寸为25nm。令人惊讶的是，TEM 明场图像、选区电子衍射 (SAED) 证实了 MgO 晶体的形成。MgO 纳米片的能量色散光谱 (EDS) 光谱显示了 Mg 和 O 元素的存在和分布。此外，获得了 3.65-3.75 eV 的估计光能带隙值。PL 光谱显示蓝色和绿色发射集中在 427 和 515 nm 附近，分别。最后，结果表明 PVA 作为前驱体模板来促进 MgO 纳米片的形成并表现出半导体性能。