University of Kashan Journal of Nanostructures 2251-7871 15 3 2025 07 01 Fabrication and Photocatalytic Evaluation of Ag/SnO2 Composites in the Treatment of Polluted Water 1121 1129 114940 10.22052/JNS.2025.03.030 EN Adnan M. Mahdi Ministry of Education, Open Educational College Wasit Study Centre Alsuwairah Branch, Iraq Journal Article 2025 06 14 Ag/SnO2 films were fabricated over silicon (Si) (111) substrates by sol gel technique, and dipping method and evaluated for photocatalytic application to decompose methylene blue (MB). Structural, morphological, and optical measurements were investigated using XRD, AFM, SEM, and UV-Vis DRS spectroscopy. SEM images showed that the Ag/SnO2 thin films were homogeneous and the particle size increased with increasing Ag doping content. The optical properties illustrated as Ag doping content increased, energy gap values of Ag/SnO2 films reduced. Results showed the best Ag doping was 6wt%, with 82% degradation efficiency and obvious constant (𝑘app) of 9.68 × 10−3 min−1 after 3 h under UV irradiation. https://jns.kashanu.ac.ir/article_114940_536b58b5260ac57bf65f24e72a3164f2.pdf