Hai, Guangyuan, and Haiming Zhang. “The Photocatalytic Applications of TiO2-WO3 Heterostructure in Methylene Blue”. American Scientific Research Journal for Engineering, Technology, and Sciences 61, no. 1 (November 19, 2019): 135–142. Accessed April 28, 2024. https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/5343.