“Synthesis of Niobium-Doped Silica-Titania Composites via Solid-State Method for Photocatalytic Degradation of Methylene Blue ”. Journal of Materials in Life Sciences 4, no. 2 (November 30, 2025): 71–80. Accessed July 26, 2026. https://jomalisc.utm.my/index.php/jomalisc/article/view/106.