Allahverdi Çağdaş
Department of Software Engineering, Faculty of Engineering, Toros University, Mersin, Turkey.
Turk J Chem. 2023 May 9;47(3):616-632. doi: 10.55730/1300-0527.3565. eCollection 2023.
Copper nano/microparticles were synthesized in octadecene at 290 °C by thermal decomposition method. Copper acetate monohydrate, stearic acid, and 1-octadecanol were used as copper precursor, capping and mild reducing agents, respectively, at the synthesis. Borosilicate glass substrates submerged into the reaction solution during the synthesis were coated by copper nano/microparticles. Thermal decomposition and coating techniques were combined in this study. Copper nano/microparticles were thoroughly characterised via X-ray powder diffraction, X-ray photoelectron, Raman, and attenuated total reflectance-Fourier transform infrared spectroscopies, and scanning and transmission electron microscopies. The average minimum Feret's diameter of these synthesized copper particles was measured as ~87 ± 19 nm. Copper nano/microparticles were converted to copper oxide nano/microparticles by applying heat treatment at 250 °C. The phase composition of copper oxide nano/microparticles was determined by reference intensity ratio analysis. The energy gap of copper oxide nano/microparticles was determined as ~2.33 eV by using Tauc's method. Their band gap PL emission was observed at ~2.15 eV.
通过热分解法在290℃下于十八烯中合成了铜纳米/微粒。在合成过程中，分别使用一水合醋酸铜、硬脂酸和1-十八醇作为铜前驱体、封端剂和温和还原剂。在合成过程中，浸没在反应溶液中的硼硅酸盐玻璃基板被铜纳米/微粒包覆。本研究将热分解和包覆技术相结合。通过X射线粉末衍射、X射线光电子能谱、拉曼光谱、衰减全反射-傅里叶变换红外光谱以及扫描和透射电子显微镜对铜纳米/微粒进行了全面表征。这些合成铜颗粒的平均最小费雷特直径测量为87±19nm。通过在250℃下进行热处理，将铜纳米/微粒转化为氧化铜纳米/微粒。通过参考强度比分析确定了氧化铜纳米/微粒的相组成。使用陶克方法确定氧化铜纳米/微粒的能隙为2.33eV。在~2.15eV处观察到它们的带隙光致发光发射。
