After obtaining the PhD title in 2010 in Materials Science, I continuously conducted my research activity at the Transilvania University of Brasov, addressing multidisciplinary topics: optimizing photocatalytic processes that involve novel solutions, development of photocatalyst based on semiconductors allowing thermodynamic modelling of bandgap position in hybrid systems of two semiconductors, a new approach to multi-component systems dyes by simultaneous analysis of two dyes mixed solutions using first-order derivative absorption spectra of dyes solutions, developing and prototyping a laboratory photoreactor with controlled radiation (UV and/or Vis), heterogeneous photodegradation of industrial wastewater from the textile industry, photodegradation of wastewater (laboratory and scale-up experiments in a solar pilot plant). The habilitation obtained in 2018 contains interdisciplinary expertise in the photocatalytic application in environment, wastewater pollution control, monitoring and modelling, materials synthesis and characterization, and the modelling process in a semiconductor. All the above can fit into the fields of environmental engineering and materials engineering.