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. 2021 Nov 23;14(23):7117. doi: 10.3390/ma14237117

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Diffuse reflectance spectra for the (a) PC220, (b) PC260, (c) PC330, and (d) P25 films before and after FeO_x CCC modification. Shaded bands denote the positions of the DR% Bragg reflectance for the PC films. Comparative (e) diffuse and (f) specular reflectance spectra for FeO_x–PC260-1st films in air and water.