Molecular structure of titania-supported molybdena: in situ Raman and FTIR spectroscopy of distinct Mo VI O x configurations dispersed on titania

Key Points

• The study aims to investigate the structural properties of the molybdena phase on titania supports using advanced spectroscopic techniques.
• Utilized in situ Raman and FTIR spectroscopies for analysis.
• Explored two TiO2 polymorphs: anatase and Degussa P25.
• Conducted experiments at temperatures ranging from 430–120 °C and Mo coverages of 0.5–5 Mo per nm².
• Identified distinct MoO x configurations based on spectroscopic data.
• Noted temperature and coverage dependence on structural characteristics of molybdena.
• Provided insights into the oxidative dehydrated conditions affecting molybdena on titania.