?Prof. Dr. rer. nat. habil. Detlef W. BahnemannInstitute of Technical ChemistryLeibniz University HannoverHannover, Niedersachsen, GermanyDetlef Bahnemann is Head of the Research Unit “Photocatalysis and Nanotechnology” at Leibniz University Hannover and Director of the Research Institute “Nanocomposite Materials for Photonic Applications” at Saint Petersburg State University. His research topics include photocatalysis, photoelectrochemistry, solar chemistry, and photochemistry focussed on synthesis and physical-chemical properties of semiconductor and metal nanoparticles. His more than 500 publications have been cited 58,000 times (h-index: 95). He is Visiting Research Professor at Queens University Belfast, DeTao Master of Photocatalysis, Nanomaterials, and Energy Applications, and holds a Guest Professorship at Tianjin University (China) several visiting professorships in China, Malaysia, Saudi Arabia, and Britain. Prof. Antonio Otavio T. PatrocinioLaboratory of Photochemistry and Materials ScienceInstitute of ChemistryFederal University of UberlandiaUberlandia, BrazilAntonio Otavio T. Patrocinio received his BS degree from the Universidade Federal de Ouro Preto, Brazil (2001) and his PhD from Universidade de São Paulo, Brazil (2009) with a sandwich period at the University of North Carolina at Chapel Hill (2008). He spent 1 year as a postdoctoral fellow at Universidade de Sao Paulo (2010), and in 2011, he moved to the Institute of Chemistry of Universidade Federal de Uberlandia, Brazil, as Assistant Professor. In 2012, he was honored by the German Federal Ministry of Education and Research (BMBF) with the Green Talents Award for his research contributions in sustainable growth and renewable energy. Between 2016 and 2018, he visited the Institut für Technische Chemie of Gottfried Wilhelm Leibniz Universität Hannover as an Alexander von Humboldt research fellow. He is currently an Associate Professor at Universidade Federal de Uberlandia and Head of the Laboratory of Photochemistry and Materials Science, where he investigates nanostructured metal oxide-based thin films and photochemical properties of coordination compounds for solar energy conversion.