The pure TiO₂ nanoparticles have been synthesized by a simplistic eco-friendly green method using extract of cinnamon powder for the first time. The cinnamic acid present in the cinnamon works as the capping agent during the reaction. TiO₂ nanoparticles were characterized by using X-ray diffraction (XRD) which conformed the anatase phase TiO₂ with average crystallite size 70.1 nm. Scanning electron microscopy (SEM) micrographs suggests that the particles exhibit spherical shapes and uniformly distributed over the surface with size range 70–150 nm. The energy dispersive X-ray spectroscopy (EDX) shows the presence of oxygen and titanium peaks which confirmed the formation of TiO₂ pure nanoparticles. From the UV–Vis spectroscopic studies the band gap comes out to be 3.2 eV which confirmed the formation of TiO₂ nanoparticles. The optical properties have also been studied by PL that indicates the formation of oxygen vacancies and self-trapped excitons in the material. The samples showed the enhanced photocatalytic property.

中文翻译：

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肉桂粉提取物绿色合成TiO 2纳米粒子及其光学性质的研究

首次使用肉桂粉提取物通过简单的环保绿色方法合成了纯TiO ₂纳米颗粒。肉桂中存在的肉桂酸在反应过程中用作封端剂。通过使用X射线衍射（XRD）表征TiO ₂纳米颗粒，其使锐钛矿相TiO ₂与平均微晶尺寸为70.1nm相符。扫描电子显微镜（SEM）显微照片表明，颗粒呈球形，并均匀分布在表面上，尺寸范围为70-150 nm。能量色散X射线光谱（EDX）显示存在氧和钛峰，这证实了TiO ₂的形成纯纳米粒子。通过紫外可见光谱研究，带隙为3.2 eV，这证实了TiO ₂纳米颗粒的形成。PL还研究了光学性质，该光学性质表明了材料中氧空位和自陷激子的形成。样品显示出增强的光催化性能。