Figures & data
Figure 1. Correlation between UV–Vis absorbance wavelength and reaction temperature in preparation of CuNPs.
Figure 2. TEM images of producing CuNPs at 110 °C (a) and 130 °C (b).
Figure 3. XRD diffractogram of CuNPs (reaction temperature at 110 °C).
Figure 4. Colour of the CuNP colloid solutions without and with citrate dispersant (a) and their UV–Vis absorbance (b).
Figure 5. TEM images of CuNPs prepared without (a) and with citrate dispersant (b) (molar ratio of citrate/CuCl2 = 0.5).
Figure 6. Synergistic effect of citrate dispersant and PVP capping polymer on controlling size growth of CuNPs.
Figure 7. Characteristics of the CuNPs: colour of the colloidal solution with different amount of the used copper salt (a), their UV–Vis absorbance (b), and TEM image of CuNPs prepared from 5 wt% of the salt with PVP (c).
Figure 8. Characteristics of the CuNPs with PVA capping polymer: UV–Vis absorbance of the CuNPs with a broadened region of the surface plasmon (a) and TEM image including size distribution (b).
