MechE Colloquium: Mesostructured Semiconductor Oxides for Solar Energy Conversion
Event details
| Date | 05.03.2019 |
| Hour | 12:15 › 13:15 |
| Speaker | Prof. Roland Marschall, Physical Chemistry III, University of Bayreuth, Germany |
| Location | |
| Category | Conferences - Seminars |
Abstract:
Photocatalytic and photoelectrochemical processes with stable oxide materials still lack the efficiency to justify industrial application, mainly due to insufficient light absorption, short charge carrier lifetimes, or dominant recombination. The presentation will present strategies including mesostructuring of complex semiconductor mixed oxide materials on the nanoscale to improve photocatalytic and photoelectrochemical activity for H2 generation and water splitting. Mesoporous and fibroid photocatalysts exhibit shortened charge carrier diffusion lengths and enhanced surface area for improved photocatalytic performance, while the design of composite photocatalysts improves charge carrier separation for enhanced activity. Spinel ferrite nanostructures combine broad light absorption and earth-abundant materials design.
Some Recent References
Adv. Funct. Mater. 24 (2014) 2421; Small 11 (2015) 2051; Adv. Energy Mater. 6 (2016) 1600208 (1-9); Nano Energy 31 (2017) 551; J. Phys. Chem. C 121 (2017) 27126; J. Mater. Chem. A 6 (2018) 1971; Nanoscale 10 (2018) 3225; Nanoscale 10 (2018) 9691; ACS Appl. Energy Mater. 1 (2018) 2520; Chem. Phys. Chem. 19 (2018) 2313; Chem. Photo. Chem 2 (2018) 1022; ACS Appl. Energy Mater. 1 (2018) 5787
Bio:
Roland Marschall obtained his PhD in Physical Chemistry from the Leibniz University Hannover in 2008, working on mesoporous materials for fuel cell applications. After a one year postdoctoral research at the University of Queensland in the ARC Centre of Excellence for Functional Nanomaterials, he joined in 2010 the Fraunhofer Institute for Silicate Research ISC as project leader. In 2011, he joined the Industrial Chemistry Laboratory at Ruhr-University Bochum as young researcher. In 07/2013, he became Emmy-Noether Young Investigator at the Justus-Liebig-University Giessen. Since 08/2018, he is full professor at the University of Bayreuth. His current research interests are heterogeneous photocatalysis, especially photocatalytic water splitting using semiconductor mixed oxides, and synthesis of oxidic mesostructured materials for renewable energy applications.
Photocatalytic and photoelectrochemical processes with stable oxide materials still lack the efficiency to justify industrial application, mainly due to insufficient light absorption, short charge carrier lifetimes, or dominant recombination. The presentation will present strategies including mesostructuring of complex semiconductor mixed oxide materials on the nanoscale to improve photocatalytic and photoelectrochemical activity for H2 generation and water splitting. Mesoporous and fibroid photocatalysts exhibit shortened charge carrier diffusion lengths and enhanced surface area for improved photocatalytic performance, while the design of composite photocatalysts improves charge carrier separation for enhanced activity. Spinel ferrite nanostructures combine broad light absorption and earth-abundant materials design.
Some Recent References
Adv. Funct. Mater. 24 (2014) 2421; Small 11 (2015) 2051; Adv. Energy Mater. 6 (2016) 1600208 (1-9); Nano Energy 31 (2017) 551; J. Phys. Chem. C 121 (2017) 27126; J. Mater. Chem. A 6 (2018) 1971; Nanoscale 10 (2018) 3225; Nanoscale 10 (2018) 9691; ACS Appl. Energy Mater. 1 (2018) 2520; Chem. Phys. Chem. 19 (2018) 2313; Chem. Photo. Chem 2 (2018) 1022; ACS Appl. Energy Mater. 1 (2018) 5787
Bio:
Roland Marschall obtained his PhD in Physical Chemistry from the Leibniz University Hannover in 2008, working on mesoporous materials for fuel cell applications. After a one year postdoctoral research at the University of Queensland in the ARC Centre of Excellence for Functional Nanomaterials, he joined in 2010 the Fraunhofer Institute for Silicate Research ISC as project leader. In 2011, he joined the Industrial Chemistry Laboratory at Ruhr-University Bochum as young researcher. In 07/2013, he became Emmy-Noether Young Investigator at the Justus-Liebig-University Giessen. Since 08/2018, he is full professor at the University of Bayreuth. His current research interests are heterogeneous photocatalysis, especially photocatalytic water splitting using semiconductor mixed oxides, and synthesis of oxidic mesostructured materials for renewable energy applications.
Practical information
- General public
- Free