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Artificial photosynthesis – Using light as driving force in chemical transformations

PhD defence, Friday 31 January 2020, Mathias Salomon Hvid.

2020.01.31 | Mie Meulengracht Christensen

Mathias Salomon Hvid

Through the process known as photocatalysis, energy from light can be used to drive chemical reactions. This has several environmentally friendly applications, for instance in the production of solar fuels, reduction of CO2, and degradation of pollutants in wastewater. During his studies, Mathias researched two-dimensional materials as photocatalysts for different applications, including hydrogen evolution, CO2 reduction, and organic reactions. In particular, a class of porous tin sulfide semiconductors, known as R-SnS-1 (R = monovalent cation), were studied for the first time in these photocatalytic reactions. Moreover, a simple and versatile method to exfoliate the 2D materials were developed, which could be used to either increase surface area and expose more catalytic sites, or create heterostructures to combine properties of different layered compounds, both of which can increase catalytic activity.

The new research findings contribute to the understanding of the structure, manipulation, and photocatalytic activity of different layered materials.


The PhD degree was completed at the Interdisciplinary Nanoscience Center (iNANO), Faculty of Natural Sciences, Aarhus University.

This résumé was prepared by the PhD student.

Time: Friday 31 January 2020 at 13.15
Place: Building 1593, room 012, Auditorium, iNANO, Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C.
Title of PhD thesis: Two-dimensional Materials as Heterogeneous Photocatalysts
Contact information: Mathias Salomon Hvid, e-mail: mahvi@inano.au.dk, tel.: +4528191302
Members of the assessment committee:
Professor Wolfgang Bensch, Institute of Inorganic Chemistry, Christian Albrechts University of Kiel, Germany
Professor Poul Norby, Department of Energy Conversion and Storage, Technical University of Denmark, Denmark
Professor Torben René Jensen (chair), iNANO and Department of Chemistry, Aarhus University, Denmark
Main supervisor:
Professor Nina Lock, Department of Engineering, Aarhus University
Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1521, 8000 Aarhus C.

PhD defence
12183 / i43