Keywords: Process intensification; Photocatalysis; Removal of organic dyes; ZnS-based phosphors; N-doped semiconductors; N-TiO2; N-doped TiO2; TTIP; titanium tetraisopropoxide; N-ZnO; N-doped ZnO; ZS; zinc sulphate; ZSP; ZnS-based phosphors materials; 30N-TiO2/ZSP;