Development of BiOBr/TiO2 nanotubes electrode for conversion of nitrogen to ammonia in a tandem photoelectrochemical cell under visible light

Ammonia (NH3) is one of the important chemicals for human life. The demand ammonia expected to increase every year. Conventionally, fixation process N2 produce NH3 in industrial sector carried out through Haber−Bosch process, which requires extreme temperature and pressure conditions that consume a high amount energy emit considerable CO2. Therefore, it necessary develop alternative technology using environmentally friendly methods. Many studies have developed photo-electrochemical conversion nitrogen presence semiconductor materials, but resulting efficiency still not as expected. In this research, development tandem system Dye-Sensitized Solar Cell - Photoelectrochemistry (DSSC PEC) was ammonia. DSSC cell prepared N719/TiO2 nanotubes photoanode, Pt/FTO cathode, electrolyte I-/I3-. produced research 1.49%. PEC at cathode anode were BiOBr/TiO2 synthesized by SILAR (Successive Ionic Layer Adsorption Reaction) method. levels analyzed phenate study, obtained 0.1272 µmol 6 hours irradiation with an SCC (Solar Chemical Conversion) percentage 0.0021%.