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. 2019 Mar 8;12(5):804. doi: 10.3390/ma12050804

Figure 1.

Figure 1

Evolution UV-Vis spectra of the colloidal suspensions recorded over 20 hr. Spectra were recorded at 20 °C between 300 and 850 nm, measured every 15 min. The insert shows a photograph of a glass vial that is similar to the colored colloidal suspension.