Labram hr evo

A Bruker D8 Discover diffractometer equipped with Cu ${\text{K}}_{\alpha }$ radiation ( $\lambda =1.5418$ Å) was used, with angles between ${30}^{\circ }$ and ${80}^{\circ }$ ( $\theta --2\theta$ ), for the crystallographic characterization of the copper-based nanostructures obtained from the annealing under hydrogen or air atmosphere. The Raman analysis was performed using a Horiba micro-Raman system, model LabRAM HR Evo, with laser power 10 mW, 405 nm excitation wavelength and CCD detector, with additional sample preparation. Deconvolution of the Raman spectrum was carried out using Voigt functions of the Fityk program (version 1.3.1). A PG Instruments spectrometer (model T80+) with a step of 0.5 nm and air as the baseline was used to obtain solid state ultraviolet visible (UV–Vis) spectra. Glass slices doped with 6 mol% of copper ions, with a thickness of 0.1 mm, were scanned before and after the annealing at $430{}^{\circ }\text{C}$ under ${\text{H}}_2$ (g) atmosphere. The scanning electron microscopy (SEM) was performed with a JEOL JSM-6390LV scanning electron microscope. In this analysis, CuOnano@glass powder was spread on gold-coated double-sided carbon tape and analyzed using an acceleration voltage of 10 kV. The total content of copper on borophosphate glasses was determined by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) using a Thermo Scientific iCap 6000 Series Spectrometer^{2 (link)} using the Cu emission line at 324.754 nm (axial view).