Green Molecules Conversion (GMC)

We develop catalytic systems that use renewable energy to convert water and residual emissions into clean fuels.

JTC Team A1 Strukturwandel &<br />
Partizipation: Gruppenbild – Dr. Jan Winkler, Hermine Bär, Cheyenne Wolf, Pia Kahlfuß, nicht abgebildet: Felix Schiedlowski

We develop renewable energy-driven catalytic systems to convert water and waste gases (e.g., CO) into clean fuels, addressing global warming and energy sustainability. Our innovations achieve industry-leading green molecules conversion activity and selectivity with novel photo/electrocatalysts. By making green fuels cheaper than fossils, we empower a carbon-neutral future.

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Our research addresses climate change mitigation and reducing fossil fuel-related health risks through renewable energy-driven photo/electrocatalysis. These systems enable dual-purpose conversion: producing green hydrogen while transforming greenhouse gases into valuable chemicals. Although externally applied fields (magnetic, electric, strain) enhance catalytic efficiency via charge transfer optimization and adsorption energy tuning, the atomic-scale mechanisms governing field-coupled reactions remain unclear.

We focus on designing field-responsive catalysts by engineering active sites via electron spin control and ferroelectric domain modulation. Combining operando techniques (XAS, Raman, TEM) with multiscale simulations, we decode how fields regulate reaction barriers and intermediate adsorption/desorption at electronic/atomic scales. A breakthrough innovation involves scaling electrolyzers from lab prototypes to industrial flow cells sustaining working current densities >1 A/cm² while maintaining selectivity. By establishing dynamic structure-activity relationships under operational conditions, we bridge fundamental mechanisms with reactor engineering challenges.

Team
Dr. Haojie Zhang, Team Leader
Dr. Maria Gaudig
Shixian Huang
Leta Takele Menisa
Qian Xu

Industrial waste Valorization to Value Added Chemicals

Valorization of complex industrial side streams such as off-gases, acidic or chloride containing by-products, and process residues
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Spin Regulated Catalyst for Enhanced Electrocatalysis

This project explores chiral-induced spin selectivity (CISS) as a strategy to control reaction pathways and enhance performance in key electrochemical reactions, including CO₂ reduction (CO₂RR), oxygen evolution (OER), and hydrogen evolution (HER).
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Enhancing electrocatalysts by spin state modulation and external magnetic field

The spin state of the metal in electrocatalysts influences the catalytical properties of the catalysts, in terms of its efficiency and selectivity. Previous studies have concluded that the spin state affects both the thermodynamic interaction between the catalyst and the reaction intermediate and the kinetics of electron transfer. Based on this foundation, catalysts can be designed to lead the electrocatalytic reactions into a more efficient and selective pathway. With the assistance of external magnetic field, this optimization can be further amplified.
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16448592 Y6UCA4HY 1 chicago-author-date 50 default 1 1 1995 https://jtc.uni-halle.de/wp-content/plugins/zotpress/
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Wang, Haifeng, Chao Lin, Lei Tan, et al. 2025. “Atomic Ga Triggers Spatiotemporal Coordination of Oxygen Radicals for Efficient Water Oxidation on Crystalline RuO2.” Nature Communications 16 (1): 3976. https://doi.org/10.1038/s41467-025-58346-9.
Chen, Yuliang, Kartik Samanta, Naafis A. Shahed, et al. 2024. “Twist-Assisted All-Antiferromagnetic Tunnel Junction in the Atomic Limit.” Nature 632 (8027): 1045–51. https://doi.org/10.1038/s41586-024-07818-x.
Tan, Lei, Huilin Fan, Siyi Ding, et al. 2025. “Coordination Engineering Modulates Spin-Polarization in Ruthenium Oxide to Enhance Acidic Oxygen Evolution Reaction.” Applied Catalysis B: Environment and Energy 378: 125630. https://doi.org/10.1016/j.apcatb.2025.125630.

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