Exploring Carbon Nitride-Based Materials for Photoreforming Biomass Aqueous Solutions into Hydrogen
Nilesh Manwar a, Zdenek Sofer b, Juan Carlos Colmenares a
a Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
b Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Czech Republic, Czech Republic
Proceedings of The Future of Hydrogen: Science, Applications and Energy Transition (H2Future)
Ibiza, Spain, 2024 April 17th - 19th
Organizers: Carolina Gimbert Suriñach, Sixto Gimenez Julia and Emilio Palomares
Oral, Nilesh Manwar, presentation 010
Publication date: 27th February 2024

The demand for clean and sustainable energy resources, such as hydrogen and CO2-to-solar fuels, is intensifying to decarbonize future global energy demands. This trend has sparked interest in utilizing renewable hydrogen production methods. Among various approaches, biomass photo-reforming using carbon nitride (CN)-based materials has emerged as a promising avenue due to its potential for efficient and environmentally friendly hydrogen generation.[1] The present study investigates the potential application of CN-based materials as catalysts for biomass photo-reforming to hydrogen, aiming to elucidate their catalytic performance, mechanism, and practical implementation.

Carbon nitrides possess essential properties such as low cost, chemical stability, and tuneable electronic structure, along with N-rich active sites, making them attractive catalysts for solar-driven hydrogen production. Harnessing the unique properties of two-dimensional carbon nitride, researchers have developed innovative approaches to enhance the efficiency and selectivity of the photo-reforming process.[2], [3] Surface modification strategies including heteroatom doping and hybridization with other materials have been employed to tailor the catalytic activity and enhance the stability of CN-based materials for biomass conversion.

Experimental details have demonstrated the effectiveness of CN-based materials in promoting the photoreforming of various biomass aqueous solutions, including sugars, alcohols, and organic acids, into hydrogen gas. By elucidating the underlying mechanisms and kinetics of the photo-reforming process, researchers have gained insights into CN-based catalysts' role in facilitating hydrogen generation from biomass-derived precursors.

Efforts have also been directed toward optimizing the operating conditions and reactor configurations to maximize the hydrogen production yield while minimizing energy consumption and environmental impact. Integrating CN-based photocatalysts into advanced reactor designs, such as photo-flow-reactor systems, holds promise for scalable and sustainable hydrogen production from biomass aqueous solutions.

In conclusion, using CN-based materials for photo-reforming biomass aqueous solutions into hydrogen represents a promising approach toward achieving carbon-neutral energy conversion. Continued research and development in this field are essential to further enhance the efficiency, stability, and practical viability of CN-based photocatalytic systems for biomass-to-hydrogen conversion, contributing to the transition towards a clean and sustainable energy future.

Keywords: Carbon nitride, Biomass, Photoreforming, Hydrogen Production, Renewable Energy

Nilesh Manwar is thankful to PASIFIC postdoctoral funding received from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 847639 and from the Ministry of Education and Science

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