Maulidiyah, M., et al. “Plasmon Enhanced by Ag-Doped S-TiO2 Ti Electrode As Highly Effective Photoelectrocatalyst for Degradation of Methylene Blue”. Asian Journal of Chemistry, vol. 29, no. 11, Oct. 2017, pp. 2504-8, doi:10.14233/ajchem.2017.20836.