Busabok, C., Khongwong, W. and Ngernchuklin, P. 2022. Simple Method to Synthesize g-C3N4 Doped Sn to Reduce Bandgap Energy (Eg). Suan Sunandha Science and Technology Journal. 9, 2 (Nov. 2022), 63–70. DOI:https://doi.org/10.53848/ssstj.v9i2.235.