Link to:

Scientific interests:

• Fundamental aspects of the surface chemistry of gases
  adsorbed on photo-, thermally, chemically and electronically excited
  semiconductor oxides and heterogeneous catalysts – noble metal nanoparticles
  loaded on oxides;
• In particular, studies on the role of surface hydroxyl
  groups in physisorption, chemical transformation and electron-exchange
  processes; investigation of the processes of molecular and dissociative
  adsorption of gases, H-atom spillover and electron transfer on(to)
  metal/semiconductor systems; catalytic and photocatalytic (UV and Visible)
  degradation and mineralization of hazardous molecules, including simulants of
  CWA’s;
• Application of molecular probe molecules to study the
  nature, state and role of active surface sites in the adsorption and catalytic conversion of gases; studies on
  the involvement of lattice oxygen in the formation of intermediate and full
  oxidation products of adsorbates. Investigation of the kinetics and mechanisms
  of catalytic processes under steady-state and transient conditions;
• Application of adsorption and catalytic methods, methods
  of isotopic exchange, thermo-programmed desorption, thermo-programmed
  reduction, thermo-programmed reactions, Infrared spectroscopy,
  Mass-spectrometry and Gas chromatography to study adsorption, catalytic and
  photocatalytic processes. Non-ordinary application of IR spectroscopy to study
  the processes of charge carrier accumulation and transfer in semiconductor
  based catalyst systems.

Selected papers:

1. Lagunov, O, Drenchev, N., Chakarova, K., Panayotov, D., Hadjiivanov, K.
   “Isotopic Labelling in Vibrational Spectroscopy: A Technique to Decipher the Structure of Surface Species”,
   Topics in Catalysis 60 (2017) 19−20.
2. Panayotov, D., Frenkel, A., Morris, J.
   “Catalysis and Photocatalysis by Nanoscale Au/TiO₂: Perspectives for Renewable Energy”,
   ACS Energy Letters 2 (2017) 1223−1231.
3. Driscoll, D., Tang, W., Burrows, S., Panayotov, D., Neurock, M., McEntee, M., Morris, J.
   “Binding Sites, Geometry, and Energetics of Propene at Nanoparticulate Au/TiO₂”
   The Journal of Physical Chemistry C 121 (2017) 1683−1689.
4. Panayotov, D., Morris, J.
   “Surface chemistry of Au/TiO₂: Thermally and photolytically activated reactions”,
   Surface Science Reports 71 (2016) 77−271.
5. Panayotov, D., Ivanova, E., Mihaylov, M., Chakarova, K., Spassov, T., Hadjiivanov, K.
   “Hydrogen Spillover on Rh/TiO₂: FTIR Study of Donated Electrons, Coadsorbed CO and H/D Exchange”
   Physical Chemistry Chemical Physics 17 (2015) 20563-20573.