By Kholod K. Salama, Mona F. Ali, Said M. El-Sheikh
Using nano-materials suspension in iso–propanol in conservation field is proved its success. In this paper three nano-materials suspension in ethanol were used to observe its influence on black and red pigments of an Egyptian Coptic fresco model from Saint Jeremiah Monastery obtained from sixth or seventh century AD. Scanning electron microscope (SEM), X-Ray diffraction, Fourier transform infrared and spectrophotometer were used to determine the visual properties of the treated model. The results showed that the addition of nano-materials an obvious change in colours was detected and the mechanical properties of the treated models was improved.