Guzman Maribel, Tian Wei, Walker Chantal, Herrera Jose E
Department of Engineering, Pontifical Catholic University of Peru, Avenida Universitaria 1801, Lima 15088, Peru.
Department of Chemical and Biochemical Engineering, Western University, London, ON, N6A 5B9, Canada.
R Soc Open Sci. 2022 Nov 16;9(11):220485. doi: 10.1098/rsos.220485. eCollection 2022 Nov.
Copper oxide (CuO) is a promising semiconductor for photovoltaic and photocatalytic applications since this material has a high optical absorption coefficient and lower band gap (2.17 eV). Doped lanthanum (La), magnesium (Mg) and manganese (Mn) CuO nanoparticles (CuO Nps) were prepared by a displacement reaction. The doped and undoped CuO Nps were characterized with scanning electron microscopy-energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), transmission electron microscopy (TEM) and ultraviolet-visible spectroscopy. The EDS results confirm the presence of La, Mg and Mn in the CuO Nps. The XRD results confirm the formation a single cubic phase of CuO with a cuprite structure. TEM images confirm the formation of Nps with mean diameters between 12.0 ± 6.1 and 30.8 ± 11.0 nm. Doped and undoped Nps present a narrow band gap (2.40 eV), blue shifted with respect to bulk CuO.
氧化铜（CuO）是一种很有前景的用于光伏和光催化应用的半导体，因为这种材料具有高光学吸收系数和较低的带隙（2.17电子伏特）。通过置换反应制备了掺杂镧（La）、镁（Mg）和锰（Mn）的氧化铜纳米颗粒（CuO Nps）。用扫描电子显微镜-能量色散X射线光谱仪（EDS）、X射线衍射仪（XRD）、透射电子显微镜（TEM）和紫外-可见光谱对掺杂和未掺杂的CuO Nps进行了表征。EDS结果证实了CuO Nps中存在La、Mg和Mn。XRD结果证实形成了具有赤铜矿结构的单一立方相CuO。TEM图像证实形成了平均直径在12.0±6.1至30.8±11.0纳米之间的纳米颗粒。掺杂和未掺杂的纳米颗粒呈现出窄带隙（2.40电子伏特），相对于块状CuO发生了蓝移。
