Felix Donat


Last Name

Donat

First Name

Felix

ORCID

0000-0002-3940-9183

Organisational unit

03865 - Müller, Christoph R. / Müller, Christoph R.

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2018 - 201932020 - 202560
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Publications1 - 10 of 63
  • CaO-Based CO2 Sorbents with a Hierarchical Porous Structure Made via Microfluidic Droplet Templating
    Item type: Journal Article
    Kurlov, Alexey; Armutlulu, Andac; Donat, Felix; et al. (2020)
    Industrial & Engineering Chemistry Research
  • Amine-Functionalized Amyloid Aerogels for CO2 Capture
    Item type: Journal Article
    Dong, Zhou; Peydayesh, Mohammad; Donat, Felix; et al. (2023)
    ChemSusChem
    Climate change caused by excessive CO₂ emissions constitutes an increasingly dire threat to human life. Reducing CO₂ emissions alone may not be sufficient to address this issue, so that the development of emerging adsorbents for the direct capture of CO₂ from the air becomes essential. Here, we apply amyloid fibrils derived from different food proteins as the solid adsorbent support and develop aminosilane-modified amyloid fibril-templated aerogels for CO₂ capture applications. The results indicate that the CO₂ sorption properties of the aerogels depend on the mixing ratio of aminosilane featuring different amine groups and the type of amyloid fibril used. Notably, amine-functionalized β-lactoglobulin (BLG) fibril-templated aerogels show the highest CO₂ adsorption capacity of 51.52 mg (1.17 mmol) CO₂/g at 1 bar CO₂ and 25.5 mg (0.58 mmol) CO₂/g at 400 ppm; similarly, the CO₂ adsorption capacity of chitosan-BLG fibril hybrid aerogels is superior to that of pure chitosan. This study provides a proof-of-concept design for an amyloid fibril-templated hybrid material facilitating applications of protein-based adsorbents for CO₂ capture, including direct air capture.
  • Yolk-shell-type CaO-based sorbents for CO2 capture: assessing the role of nanostructuring for the stabilization of the cyclic CO2 uptake
    Item type: Journal Article
    Krödel, Maximilian; Oing, Alexander; Negele, Jan; et al. (2022)
    Nanoscale
    Yolk(CaO)–shell(ZrO₂)-structured sorbents yield superior materials for high-temperature CO₂capture by mitigating deactivationviasintering and mixed phase (CaZrO₃) formation.
  • Amyloid fibril-UiO-66-NH2 aerogels for environmental remediation
    Item type: Journal Article
    Peydayesh, Mohammad; Chen, Xiulin; Vogt, Julia; et al. (2022)
    Chemical Communications
    A sustainable hybrid aerogel based on β-lactoglobulin amyloid fibril/UiO-66-NH2 is developed for environmental remediation. The hybrid aerogel's CO2 capture and water purification performances were investigated. The hybrid aerogel can achieve CO2 capture and possesses excellent adsorption capacities for several heavy metals, dyes, and organic solvents.
  • Dual carbon sequestration with photosynthetic living materials
    Item type: Journal Article
    Dranseike, Dalia; Cui, Yifan; Ling, Andrea S.; et al. (2025)
    Nature Communications
    Natural ecosystems efficiently sequester CO2 but containing and controlling living systems remains challenging. Here, we engineer a photosynthetic living material for dual CO2 sequestration that leverages biomass production and insoluble carbonate formation via microbially induced carbonate precipitation (MICP). To achieve this, we immobilize photosynthetic microorganisms within a printable polymeric network. Digital design and fabrication of the living structures ensure sufficient light access and nutrient supply to encapsulated cyanobacteria, enabling long-term culture for over a year. We showcase that photosynthetic living materials are able to sequester 2.2 ± 0.9 mg of CO2 per gram of hydrogel material over 30 days and 26 ± 7 mg of CO2 over 400 days. These findings highlight the potential of photosynthetic living materials for scalable, low-maintenance carbon sequestration with applications in carbon-neutral infrastructure and CO2 mitigation.
  • Altering Oxygen Binding by Redox-Inactive Metal Substitution to Control Catalytic Activity: Oxygen Reduction on Manganese Oxide Nanoparticles as a Model System**
    Item type: Journal Article
    Wu, Yi-Hsuan; Mehta, Harshit; Willinger, Elena; et al. (2023)
    Angewandte Chemie. International Edition
    Establishing generic catalyst design principles by identifying structural features of materials that influence their performance will advance the rational engineering of new catalytic materials. In this study, by investigating metal-substituted manganese oxide (spinel) nanoparticles, Mn3O4:M (M=Sr, Ca, Mg, Zn, Cu), we rationalize the dependence of the activity of Mn3O4:M for the electrocatalytic oxygen reduction reaction (ORR) on the enthalpy of formation of the binary MO oxide, ΔfH°(MO), and the Lewis acidity of the M2+ substituent. Incorporation of elements M with low ΔfH°(MO) enhances the oxygen binding strength in Mn3O4:M, which affects its activity in ORR due to the established correlation between ORR activity and the binding energy of *O/*OH/*OOH species. Our work provides a perspective on the design of new compositions for oxygen electrocatalysis relying on the rational substitution/doping by redox-inactive elements.
  • A comprehensive review of carbon capture science and technologies
    Item type: Review Article
    Wu, Chunfei; Huang, Qi; Xu, Zhicheng; et al. (2024)
    Carbon Capture Science & Technology
  • Probing Surface Transformations of Lanthanum Nickelate Electrocatalysts during Oxygen Evolution Reaction
    Item type: Journal Article
    Wu, Yi-Hsuan; Janák, Marcel; Abdala, Paula Macarena; et al. (2024)
    Journal of the American Chemical Society
    Monitoring the spontaneous reconstruction of the surface of metal oxides under electrocatalytic reaction conditions is critical to identifying the active sites and establishing structure–activity relationships. Here, we report on a self-terminated surface reconstruction of Ruddlesden–Popper lanthanum nickel oxide (La₂NiO₄₊δ) that occurs spontaneously during reaction with alkaline electrolyte species. Using a combination of high-resolution scanning transmission electron microscopy (HR-STEM), surface-sensitive X-ray photoelectron spectroscopy (XPS), and soft X-ray absorption spectroscopy (sXAS), as well as electrochemical techniques, we identify the structure of the reconstructed surface layer as an amorphous (oxy)hydroxide phase that features abundant under-coordinated nickel sites. No further amorphization of the crystalline oxide lattice (beyond the ∼2 nm thick layer formed) was observed during oxygen evolution reaction (OER) cycling experiments. Notably, the formation of the reconstructed surface layer increases the material’s oxygen evolution reaction (OER) activity by a factor of 45 when compared to that of the pristine crystalline surface. In contrast, a related perovskite phase, i.e., LaNiO₃, did not show noticeable surface reconstruction, and also no increase in its OER activity was observed. This work provides detailed insight into a surface reconstruction behavior dictated by the crystal structure of the parent oxide and highlights the importance of surface dynamics under reaction conditions.
  • On the Importance of Benchmarking the Gas-Phase Pyrolysis Reaction in the Oxidative Dehydrogenation of Propane
    Item type: Journal Article
    Nadjafi, Manouchehr; Cui, Yifan; Bachl, Marlon; et al. (2023)
    ChemCatChem
    The oxidative dehydrogenation of propane (ODP) proceeds catalytically on a gas-solid interface (heterogeneous reaction) and/or in the gas phase (homogeneous reaction) via a radical chain process. ODP may therefore combine interrelated contributions from the heterogeneous dehydrogenation and gas-phase reactions, which can be initiated by a catalyst. This study demonstrates that relatively high propene and ethene selectivities (ca. 80 % and 10 %) and propane conversions (viz., 10 % at 500 degrees C) can be achieved with an empty quartz reactor, which is comparable to the performances of state-of-the-art ODP catalysts (boron-based or supported VOx). Optimization of the post-catalytic volume of a h-BN catalyst bed tested at 490 degrees C allows to increase the conversion of propane from 9 % to 15 % at a propene selectivity of 77 %, highlighting this parameter as an important variable for improving catalytic ODP performances.
Publications1 - 10 of 63