Searched for: subject%3A%22operando%22
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van Beek, L.E. (author), Jain, D. (author), Gholkar, P.V. (author), Eldridge, T.J. (author), Nguyen, H.P. (author), Muramoto, Kei (author), Urakawa, A. (author)
Operando methodologies are widely used in heterogenous catalysis to understand unique state of catalyst materials emerging under specific reaction conditions and to establish catalyst structure-activity relationships. Recent studies highlight the importance of combining multiple operando techniques (multimodal approach) to gain complementary...
journal article 2024
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Sadykov, Ilia I. (author), Palagin, D. (author), Krumeich, Frank (author), Plokhikh, Igor V. (author), van Bokhoven, Jeroen A. (author), Nachtegaal, Maarten (author), Safonova, Olga V. (author)
The surface of supported heterogeneous catalysts often contains adsorbed water and hydroxyl groups even when water is not directly added to the reaction stream. Nonetheless, the reactivity of adsorbed water and hydroxyl groups is rarely considered. We demonstrate that water and hydroxyl groups can not only directly participate in the...
journal article 2024
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Yu, Yuhang (author), Obata, Keisuke (author), Movick, William J. (author), Yoshida, Shintaro (author), Palomo Jiménez, J. (author), Lundin, Sean Thomas B. (author), Urakawa, A. (author), Sarathy, S. Mani (author), Takanabe, Kazuhiro (author)
To introduce promotional H<sub>2</sub>O effects for both CH<sub>4</sub> rate and C<sub>2</sub> selectivity, the OH radical formation, catalyzed through H<sub>2</sub>O activation with O<sub>2</sub> surface species, was critical for modeling selective Mn-K<sub>2</sub>WO<sub>4</sub>/SiO<sub>2</sub> catalysts. Based on our reported experimental...
journal article 2024
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Eren, Enis Oğuzhan (author), Esen, Cansu (author), Scoppola, Ernesto (author), Song, Zihan (author), Senokos, Evgeny (author), Zschiesche, Hannes (author), Cruz, Daniel (author), Lauermann, Iver (author), Kumru, B. (author)
Developing high-performance carbonaceous anode materials for sodium-ion batteries (SIBs) is still a grand quest for a more sustainable future of energy storage. Introducing sulfur within a carbon framework is one of the most promising attempts toward the development of highly efficient anode materials. Herein, a microporous sulfur-rich carbon...
journal article 2024
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Park, Junbeom (author), Dutta, Sarmila (author), Sun, Hongyu (author), Jo, Janghyun (author), Karanth, P. (author), Weber, Dieter (author), Tavabi, Amir H. (author), Durmus, Yasin Emre (author), Basak, Shibabrata (author)
High energy density electrochemical systems such as metal batteries suffer from uncontrollable dendrite growth on cycling, which can severely compromise battery safety and longevity. This originates from the thermodynamic preference of metal nucleation on electrode surfaces, where obtaining the crucial information on metal deposits in terms...
journal article 2024
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Phongprueksathat, N. (author)
Since the industrial revolution in the 1760s, the CO2 concentration in the atmosphere has been rising incessantly driving global warming closer to the point of no return. The world requires urgent actions to not only reduce CO2 emissions but also capture the CO2 for utilization to mitigate the future environmental crisis. CO2 hydrogenation to...
doctoral thesis 2023
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Safyari, Mahdieh (author), Khossossi, N. (author), Meisel, Thomas (author), Dey, P. (author), Prohaska, Thomas (author), Moshtaghi, Masoud (author)
An attractive approach to mitigate hydrogen embrittlement (HE) is to use nano-sized particles to immobilize hydrogen. However, the atomic scale relationship between different particle-matrix characteristics in aluminum alloys and the susceptibility to HE is unknown. In this study, the effects of interactions between various interfaces and...
journal article 2023
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Zhou, Hui (author), Docherty, Scott R. (author), Phongprueksathat, N. (author), Chen, Zixuan (author), Bukhtiyarov, Andrey V. (author), Prosvirin, Igor P. (author), Safonova, Olga V. (author), Urakawa, A. (author), Copéret, Christophe (author), Müller, Christoph R. (author), Fedorov, Alexey (author)
The direct synthesis of methanol via the hydrogenation of CO<sub>2</sub>, if performed efficiently and selectively, is potentially a powerful technology for CO<sub>2</sub> mitigation. Here, we develop an active and selective Cu-Zn/SiO<sub>2</sub> catalyst for the hydrogenation of CO<sub>2</sub> by introducing copper and zinc onto...
journal article 2023
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Baumgartner, L.M. (author), Kahn, A.P. (author), Hoogland, Maxime (author), Bleeker, J.J. (author), Jager, W.F. (author), Vermaas, D.A. (author)
Electrochemical CO<sub>2</sub> reduction poses a promising pathway to produce hydrocarbon chemicals and fuels without relying on fossil fuels. Gas diffusion electrodes allow high selectivity for desired carbon products at high current density by ensuring a sufficient CO<sub>2</sub> mass transfer rate to the catalyst layer. In addition to CO...
journal article 2023
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Hu, L. (author), Pinto, D. (author), Urakawa, A. (author)
Direct valorization of methane via oxidative coupling of methane (OCM) is an encouraging alternative to conventional oil-based processes for the production of light hydrocarbons (ethane and ethylene). Abundant, inexpensive simple oxides such as MgO and La<sub>2</sub>O<sub>3</sub> possess the ability to selectively activate methane. However,...
journal article 2023
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Li, G. (author), Pidko, E.A. (author)
The molecular-sized void space of the zeolitic micropores is perfect matrices to encapsulate and stabilize multicomponent and multifunctional complexes that can be used as active sites for a wide range of important catalytic transformations. In this article, we discuss and analyze the key developments of the last decade in the catalytic...
book chapter 2023
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Zhuang, Linzhou (author), Li, Zhiheng (author), Li, Mengran (author), Tao, Haolan (author), Mao, Xin (author), Lian, Cheng (author), Ge, Lei (author), Du, Aijun (author), Xu, Zhi (author)
The highly efficient and stable electrolysis needs the rational control of the catalytically active interface during the reactions. Here we report a new operando surface restructuring pathway activated by pairing catalyst and electrolyte ions. Using SrCoO<sub>3-δ</sub>-based perovskites as model catalysts, we unveil the critical role of...
journal article 2023
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Urakawa, A. (author), Ferri, Davide (author), Nuguid, Rob Jeremiah G. (author)
In spectroscopy and diffraction methods, the signatures of catalytically active sites are often submerged by the contribution of spectator species. In some cases, the signals may also superimpose with each other, hindering proper peak identification. Rationalizing a reaction pathway becomes very challenging, if not impossible, under these...
book chapter 2023
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van Putten, R. (author), Uslamin, E. (author), Pidko, E.A. (author)
This invention describes an apparatus that enables the automated removal of small samples from fluids such as those encountered in (bio-)chemical reactors. These samples can then be used for, e.g., kinetic analysis and quality control applications. The system was explicitly designed to be compatible with harsh and aggressive reaction conditions...
journal article 2021
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Atkins, Duncan (author), Capria, Ennio (author), Edström, Kristina (author), Famprikis, T. (author), Grimaud, Alexis (author), Jacquet, Quentin (author), Johnson, S.M. (author), Matic, Aleksandar (author), Wagemaker, M. (author)
Li-ion batteries are the essential energy-storage building blocks of modern society. However, producing ultra-high electrochemical performance in safe and sustainable batteries for example, e-mobility, and portable and stationary applications, demands overcoming major technological challenges. Materials engineering and new chemistries are key...
journal article 2021
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Legerstee, W.J. (author), Boekel, M.G.M. (author), Boonstra, S. (author), Kelder, E.M. (author)
An Atomic Force Microscope (AFM) is combined with a special designed glovebox system and coupled to a Galvanostat/Potentiostat to allow measurements on electrochemical properties for battery research. An open cell design with electrical contacts makes it possible to reach the electrode surface with the cantilever so as to perform measurements...
journal article 2021
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Docherty, S.R. (author), Phongprueksathat, N. (author), Lam, Erwin (author), Noh, Gina (author), Safonova, Olga V. (author), Urakawa, A. (author), Copéret, Christophe (author)
The direct conversion of CO<sub>2</sub>to CH<sub>3</sub>OH represents an appealing strategy for the mitigation of anthropogenic CO<sub>2</sub>emissions. Here, we report that small, narrowly distributed alloyed PdGa nanoparticles, prepared via surface organometallic chemistry from silica-supported Ga<sup>III</sup>isolated sites, selectively...
journal article 2021
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Firet, N.J. (author)
Fossil resources are being depleted, while the concentration of CO2 in the atmosphere rises. There clearly is a strong and immediate need for a radical energy transition. Renewable energy is growing strongly as supplier of fossil-free electricity, but it needs large-scale and long-term storage options in order to be able to make a real impact on...
doctoral thesis 2020
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Basak, S. (author), Migunov, Vadim (author), Lee, Q. (author), Ganapathy, S. (author), Vijay, Ashwin (author), Ooms, F.G.B. (author), Wagemaker, M. (author), Kelder, E.M. (author), Arszelewska, Violetta (author)
With operando transmission electron microscopy visualizing the solid-solid electrode-electrolyte interface of silicon active particles and lithium oxide solid electrolyte as a model system, we show that (de)lithiation (battery cycling) does not require all particles to be in direct contact with electrolytes across length scales of a few...
journal article 2020
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Fehse, M. (author), Hogan, Matteo P. (author), Pang, Sally Hiu Tung (author), Blackman, Oliver (author), Kelder, E.M. (author), Longo, Alessandro (author), Alfredsson, Maria (author)
X-ray absorption and small-angle x-ray scattering spectra were simultaneously acquired under operando conditions in a joined technique approach, for the first time applied in the field of energy storage materials. This approach allows one to closely follow the electronic and local structure evolution, as well as monitor and quantify the...
journal article 2020
Searched for: subject%3A%22operando%22
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