Kongsong, Peerawas. “Photocatalytic Efficiency of Potassium Doped TiO2 Nanowire–nanoparticle Hetero–structures Films Coated on Glass Substrate Under Visible Light Irradiation”. Journal of Materials Science and Applied Energy 7, no. 2 (August 29, 2018): 300–306. Accessed January 31, 2023. https://ph01.tci-thaijo.org/index.php/jmsae_ceae/article/view/128006.