Source google image: https://www.researchgate.net/profile/S_M_A_Siddiki/publication/319156965/figure/fig2/AS:667869436190726@1536243890454/XPS-spectra-of-the-Re-4f-region-of-Re-TiO-2-a-before-and-b-after-the-reduction-with-H-2.png
Isolation xlpe définition
Source google image: https://www.researchgate.net/profile/S_M_A_Siddiki/publication/319156965/figure/fig2/AS:667869436190726@1536243890454/XPS-spectra-of-the-Re-4f-region-of-Re-TiO-2-a-before-and-b-after-the-reduction-with-H-2.png