2020年7月15日 · The UV–visible spectrophotometer was used for both qualitative and quantitative investigations of the electronic structure of ions and molecules of a substance. Water-based dispersion of Cu 2 O nanoparticles was used, and the spectrum was recorded within the wavelength range of 400–700 nm.

2024年8月1日 · PEC PDs based on Cu 2 O exhibit a broad photoresponse ranging from UV (365 nm) to visible light (630 nm), a high responsivity (R) of −29.25 mA/W to 525 nm light, a rapid speed of 5/25 ms, and good multicycle stability, outperforming most UV–vis PEC PDs.

Cuprous oxide (Cu2O) is a promising photocathode for photo-electrochemical hydrogen production. One of the main issues limiting the application of Cu2O is photo-corrosion in...

The UV–Vis diffuse reflectance spectra (Fig. 3 A) show significant redshifts from Cu 2 O to Cu 2 O@Cu, suggesting an enhanced absorption capacity and a broader absorption spectrum in the visible light range. Within the visible range, Cu 2 O@Cu exhibits stronger light absorption than Cu 2 O. The broad absorption peak near 560 nm in the UV ...

UV-Vis spectra show a characteristic absorbance peak around 485 nm attributed to Cu2O. The energy band gap measurements from the Tauc plot reveal a decrease in band gap energy with increasing...

提出了一种在室温下合成氧化亚铜（Cu2O）纳米粒子稳定相的简便方法。通过使用X射线衍射（XRD），UV-VIS光谱学研究了（Cu2O）纳米颗粒的结构和光学性质。XRD分析已表明具有约20nm的平均边缘长度的立方相Cu 2 O的纳米晶体性质。

2019年10月15日 · In this investigation we are prepared CuO and Cu 2 O by calcination process. To study the structural and optical properties as prepared sample by XRD and UV-Vis characterization analysis. The average crystallite size calculated from Scherrer formula of as synthesize sample.

2020年6月13日 · CuO nanoparticles were prepared by a simple and cheap method from thermal decomposition of new copper precursor at 500 ºC and 600 ºC. UV–Vis and optical data confirmed the surface plasmon resonance and FT-IR and XRD results confirmed the preparation of single phase of CuO nanoparticles.

2015年4月10日 · The effects of copper salts on the morphology of Cu2O were investigated in details through various characterization methods, including X-ray diffraction, transmission electron microscopy,...

Cu2O@Au yolk/shell structures were successfully prepared with a facile self-generated acid etching method at room temperature. The morphology is controllable by adding different amount of...