Article
Geochemistry & Geophysics
Dong Zhao, Hao He
Summary: Traditional methods struggle to accurately differentiate oil slicks from seawater in large area images, but sensitivity analysis of spectral indices to seawater environment can help improve detection accuracy.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yuki Saito, Ken Nishizawa, Benjamin Laroche, Haruro Ishitani, Shu Kobayashi
Summary: This study demonstrates the continuous-flow synthesis of (R)-tamsulosin without the need for the isolation or purification of any intermediates or byproducts. The synthesis was achieved through four catalytic transformations in a flow stream, resulting in a high yield and enantiomeric excess.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Physical
Mohammad Younas, Mashallah Rezakazemi, Muhammad Saddique Arbab, Jehangir shah, Waheed Ur Rehman
Summary: This paper summarizes the recent research progress on formic acid as an efficient liquid chemical for hydrogen storage, including catalyst studies, hydrogen generation methods, and developments in practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Biochemistry & Molecular Biology
Anna Wolny, Anna Chrobok
Summary: Supported ionic liquid phases offer several advantages in catalysis, providing catalytic activity or efficient matrix and improving mass transport. Silica-based materials, due to their cost-efficiency and specific properties, are widely used in this field.
Review
Chemistry, Multidisciplinary
Majid Vafaeezadeh, Werner R. Thiel
Summary: This review systematically covers recent and significant achievements in the application of task-specific Janus nanomaterials as heterogeneous catalysts in various types of chemical reactions, and provides an outlook on possible future applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Ana Sousa-Castillo, Andrea Marino-Lopez, Begona Puertolas, Miguel A. Correa-Duarte
Summary: Bioorthogonal chemistry has provided a powerful tool for performing biocompatible chemospecific reactions in living systems, particularly in the areas of genetic encoding systems, bioimaging, and cancer therapy. This Minireview focuses on recent advances in the use of heterogeneous catalysts for bioorthogonal reactions, discussing the synthetic strategies of Pd-, Au-, and Cu-based materials, their applications in activating caged fluorophores and prodrugs, and the potential of using external stimuli for targeted drug release in diseased tissues. The review also highlights future directions and challenges in this emerging field.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Ruixue Zhang, Yan Chen, Muhua Ding, Jie Zhao
Summary: This review provides a comprehensive summary of seminal heterogenized Cu-catalyzed homogenous catalysis reported over the last decade, highlighting the potential and synthetic perspectives of heterogeneous copper catalysis in both academic and industry.
Article
Optics
Jian-Te Wang, Peng He
Summary: We propose feasible schemes to realize topological phases with cold atoms in momentum-space lattices through carefully engineering artificial gauge potentials for neutral atoms. We demonstrate a Floquet approach to design momentum-space lattices with long-range hoppings, which can be applicable to realize the momentum-space Haldane model. We further show the realization of two-dimensional spin-orbit coupling for a spinful momentum-space lattice, arising from a general formulation of non-Abelian gauge potential.
Review
Chemistry, Multidisciplinary
Lifei Lian, Huaiying Zhang, Sai An, Wei Chen, Yu-Fei Song
Summary: POMs, as a class of discrete anionic metal-oxygen clusters with tunable structure, exhibit super strong Bransted acidity, high proton mobility, and thermal stability, making them potential green alternatives to conventional homogeneous acid catalysts. Through design strategies such as functionalized cations, covalent interactions, non-precious metal support, and porous polymer framework, POMs-based heterogeneous catalysts have shown excellent catalytic performance in specific acid-catalyzed reactions.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Kirsten M. O. Jensen, Esther Rani Aluri, Enrique Sanchez Perez, Gavin B. M. Vaughan, Marco Di Michel, Eleanor J. Schofield, Simon J. L. Billinge, Serena A. Cussen
Summary: The study utilized advanced techniques to investigate the nanostructured species present in the wood of the Mary Rose. The findings contribute to the preservation and conservation of this historical artifact.
Article
Chemistry, Physical
Jiaojiao Song, Yixuan Yang, Shoujie Liu, Lei Li, Nan Yu, Yuteng Fan, Zhiming Chen, Long Kuai, Baoyou Geng
Summary: This study investigates the impact of dispersion and support on the activity of Pt in CO oxidation reaction, revealing that reducible TiO2 significantly influences Pt activity with lower apparent activation barriers, and that single-atom dispersion of Pt maximizes active sites.
Article
Chemistry, Multidisciplinary
Yuki Saito, Shu Kobayashi
Summary: The application of heterogeneous catalysts in continuous-flow enantioselective hydroacylation reactions was studied. Catalysts were prepared by mixing supports and rhodium complexes, and showed excellent activity and enantioselectivity. Under optimized conditions, the catalysts exhibited high turnover numbers and could be applied to various substrates. Furthermore, sequential-flow reactions with other heterogeneous catalysts were demonstrated for the synthesis of biologically active molecules and functional materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Chemical
Yani Guan, Donovan Chaffart, Guihua Liu, Zhaoyang Tan, Dongsheng Zhang, Yanji Wang, Jingde Li, Luis Ricardez-Sandoval
Summary: The recent application of machine learning in the development of new heterogeneous catalysts has shown significant progress in establishing relationships between material properties and catalytic performance, improving efficiency in design and screening guidelines. However, accurate prediction of high-performance catalysts still presents challenges.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Physics, Multidisciplinary
Zhi-Qiang Jiao, Stefano Longhi, Xiao-Wei Wang, Jun Gao, Wen-Hao Zhou, Yao Wang, Yu-Xuan Fu, Li Wang, Ruo-Jing Ren, Lu-Feng Qiao, Xian-Min Jin
Summary: Symmetries play a crucial role in identifying topological phases and connecting protected edge states with topological bulk invariants through the bulk-boundary correspondence. One-dimensional lattices are believed to be protected by chiral symmetry, but this is not always the case. By experimentally detecting topological invariants in the bulk through continuous-time quantum walks of photons, it has been shown that inversion symmetry protects the quantized Zak phase but edge states may disappear in the topological nontrivial phase.
PHYSICAL REVIEW LETTERS
(2021)
Review
Chemistry, Physical
Mi Xiong, Zhe Gao, Yong Qin
Summary: Spillover, a well-known phenomenon in heterogeneous catalysis, has opened up a new research field for understanding the dynamic behavior of migrated species on catalyst surfaces. Recent advances in characterization techniques and synthesis methodologies have provided valuable information about spillover. The review mainly focuses on recent progress in the characterization and mechanism of hydrogen spillover, as well as utilizing the spillover effect for enhanced catalytic performance, while discussing remaining challenges and possible future research directions.
Article
Plant Sciences
Viviana Escudero, Dario Ferreira Sanchez, Isidro Abreu, Sara Sopena-Torres, Natalia Makarovsky-Saavedra, Maria Bernal, Ute Kramer, Daniel Grolimund, Manuel Gonzalez-Guerrero, Lucia Jorda
Summary: Zinc plays a role in resistance to PcBMM infection in plants with ordinary zinc levels, and its accumulation is associated with up-regulation of HEAVY METAL ATPASE2 and HEAVY METAL ATPASE4 expression, enhancing resistance.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Geochemistry & Geophysics
Marija Krstulovic, Angelika D. Rosa, Dario Ferreira Sanchez, Lelia Libon, Christian Albers, Margarita Merkulova, Daniel Grolimund, Tetsuo Irifune, Max Wilke
Summary: The physical properties of silicate melts are influenced by external factors such as pressure, temperature, and chemistry. Structural rearrangements at atomic scale due to these factors can have profound effects on melt properties. Through X-ray absorption spectroscopy, the researchers studied the structural properties of haplo basaltic glasses and melts under high pressure and temperature conditions. The results show a continuous transformation in coordination between tetrahedral and octahedral structures, providing insights into melt behavior in the Earth's interior.
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
(2022)
Article
Chemistry, Multidisciplinary
Rob Jeremiah G. Nuguid, Maarten Nachtegaal, Oliver Krocher, Davide Ferri
Summary: This article presents a laboratory exercise that combines the concepts of infrared spectroscopy and catalysis to study nitrogen oxide abatement. The practical course was originally designed for in-person instruction but was adapted into a virtual learning experience during the COVID-19 pandemic. Analysis showed no significant difference in performance between in-person and virtual participants, suggesting that the online offering of the course can be a viable alternative to face-to-face instruction.
JOURNAL OF CHEMICAL EDUCATION
(2022)
Article
Chemistry, Physical
Justus S. Diercks, Juan Herranz, Maximilian Georgi, Natasa Diklic, Piyush Chauhan, Kathrin Ebner, Adam H. Clark, Maarten Nachtegaal, Alexander Eychmuller, Thomas J. Schmidt
Summary: Palladium is an electrocatalyst that can selectively generate carbon monoxide or formate at high and low overpotentials, respectively. Previous studies have been inconclusive about palladium's ability to form a hydride phase and its effect on CO2 reduction reaction (CO2RR) selectivity. This study used electrochemical measurements and in situ X-ray absorption spectroscopy to reveal the strong influence of adsorbed CO on the formation rate of Pd-hydride, and confirmed the complete formation of beta-phase PdHx at all applied potentials under CO2RR conditions.
Article
Chemistry, Physical
Justus S. Diercks, Maximilian Georgi, Juan Herranz, Natasa Diklic, Piyush Chauhan, Adam H. Clark, Rene Hubner, Antoine Faisnel, Qinhao Chen, Maarten Nachtegaal, Alexander Eychmuller, Thomas J. Schmidt
Summary: Palladium is a promising catalyst for the electrochemical CO2-reduction reaction (CO2RR) due to its unique ability to reduce carbon dioxide into CO or formate at high overpotentials. This research focuses on the synthesis and characterization of unsupported bimetallic PdPt and pure Pt or Pd aerogels. The results show that the Pt surface atoms have high activity toward hydrogen evolution, leading to a preference for this reaction over CO2 reduction in all PdPt alloys. However, the pure Pd aerogel exhibits increased selectivity toward CO due to the suppression of hydrogen evolution caused by its unsupported nature.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Dominik Wierzbicki, Adam H. Clark, Oliver Kroecher, Davide Ferri, Maarten Nachtegaal
Summary: This study successfully synthesized monomeric Fe/ZSM-5 using a new preparation method, demonstrating its positive role in NH3-SCR reactions, and revealed the structural characteristics of Fe species and their changes during the reaction through experimental data analysis.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Ilia I. Sadykov, Vitaly L. Sushkevich, Frank Krumeich, Rob Jeremiah G. Nuguid, Jeroen A. van Bokhoven, Maarten Nachtegaal, Olga V. Safonova
Summary: Operando X-ray absorption spectroscopy identifies a quantitative correlation between the concentration of Fe2+ species in Pt-FeOx catalysts and their carbon monoxide oxidation steady-state reaction rate. Deactivation of the catalysts occurs due to irreversible oxidation of active Fe2+ sites. Active Fe2+ species, presumed to be Fe+2O-2 clusters in contact with platinum nanoparticles, coexist with spectator trivalent oxidic iron (Fe3+) and partially alloyed metallic iron (Fe-0). The concentration of active sites and catalyst activity strongly depend on the pretreatment conditions. Fe2+ is the resting state of the active sites in the carbon monoxide oxidation cycle.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Medicinal
Mirko Paulikat, Daniele Vitone, Florian K. Schackert, Nils Schuth, Alessandra Barbanente, GiovanniMaria Piccini, Emiliano Ippoliti, Giulia Rossetti, Adam H. Clark, Maarten Nachtegaal, Michael Haumann, Holger Dau, Paolo Carloni, Silvano Geremia, Rita De Zorzi, Liliana Quintanar, Fabio Arnesano
Summary: This study elucidated the structural determinants of zinc-chloroquine interactions and zinc distribution in cells using computational and experimental methods. Chloroquine binds zinc through the quinoline ring nitrogen, forming tetrahedral complexes, but loses metal coordination at low pH. The findings have implications for other metal-targeting drugs and bioinorganic systems.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Multidisciplinary
Justus S. Diercks, Juan Herranz, Kathrin Ebner, Natasa Diklic, Maximilian Georgi, Piyush Chauhan, Adam H. Clark, Maarten Nachtegaal, Alexander Eychmueller, Thomas J. Schmidt
Summary: In recent years, operando/in situ X-ray absorption spectroscopy (XAS) has become an important tool in the electrocatalysis community. This study investigates the impact of catalyst layer (CL) thickness on Pd-hydride formation trends in carbon-supported Pd nanoparticles and an unsupported Pd aerogel. The results suggest the need for minimizing CL thickness in spectro-electrochemical experiments and using complementary thin-film control measurements.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Anna Zabilska, Maxim Zabilskiy, Rob Jeremiah G. Nuguid, Adam H. H. Clark, Ilia I. I. Sadykov, Maarten Nachtegaal, Oliver Kroecher, Olga V. V. Safonova
Summary: In this study, the origin of the volcano-shaped activity trend for VOx/CeOx catalysts in ethanol oxidative dehydrogenation (ODH) was clarified using operando quick V K- and Ce L-3- edge XAS experiments. It was found that both vanadium and cerium synergistically contribute to the alcohol ODH activity, with the concentration of reversible Ce4+/Ce3+ species being the main descriptor. The activity drop observed at a surface loading above ca. 3 V nm(-2) (ca. 30% VOx monolayer coverage) was attributed to the formation of spectator V4+ and Ce3+ species, which were identified for the first time.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Xi Zhang, Stephan Pollitt, Gihun Jung, Wenzhe Niu, Pardis Adams, Jan Buhler, Nora S. Grundmann, Rolf Erni, Maarten Nachtegaal, Neul Ha, Jisu Jung, Byungha Shin, Wooseok Yang, S. David Tilley
Summary: This work addresses the issue of short minority carrier diffusion length in Cu2S by synthesizing nanostructured Cu2S thin films, which enables increased charge carrier collection. The photocathode based on the nanoplate Cu2S reveals enhanced charge carrier collection and improved photoelectrochemical water-splitting performance. This work provides a simple, cost-effective, and high-throughput method to prepare phase-pure nanostructured Cu2S thin films for scalable solar hydrogen production.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Thibault Fovanna, Maarten Nachtegaal, Adam H. Clark, Oliver Krocher, Davide Ferri
Summary: Using quick scanning X-ray absorption spectroscopy (QEXAFS), a detailed kinetic study of Pd hydride formation and reactivity on Pd/Al2O3 in 2-propanol solvent was conducted, allowing for quantitative assessment of the extent of Pd hydride formed or consumed. This methodology was further applied to study the displacement of hydrides during furfural hydrogenation in 2-propanol, revealing a displacement process occurring upon coordination of CO derived from furfural decarbonylation on palladium. The time-resolved quantitative methodology enables the determination of Pd hydride fraction and assessment of their displacement and consumption kinetics in both gas and liquid phases.
Article
Chemistry, Physical
Natasa Diklic, Adam H. H. Clark, Juan Herranz, Dino Aegerter, Justus S. S. Diercks, Alexandra Beard, Viktoriia A. A. Saveleva, Piyush Chauhan, Maarten Nachtegaal, Thomas Huthwelker, Dmitry Lebedev, Paula Kayser, Jose Antonio Alonso, Christophe Coperet, Thomas J. J. Schmidt
Summary: The large-scale deployment of polymer electrolyte water electrolysis (PEWE) is limited by the use of scarce and expensive iridium-based O-2 evolution reaction (OER) catalysts in PEWE anodes. To gain a better understanding of the relationship between the catalysts' activity and their physicochemical properties, the oxidation state of surface iridium in different iridium oxides with varying compositions, crystal structures, and OER activities was determined. The results showed that regardless of the catalysts' properties, the surface iridium underwent a linear, potential-driven oxidation that stabilized at a +5 state, which correlated with the onset of O-2 evolution, indicating the involvement of iridium in oxidation states ≥+5 in the OER.
Article
Forestry
Paula Ballikaya, Ivano Brunner, Claudia Cocozza, Daniel Grolimund, Ralf Kaegi, Maria Elvira Murazzi, Marcus Schaub, Leonie C. Schoenbeck, Brian Sinnet, Paolo Cherubini
Summary: This study investigated the uptake and transport mechanisms of gold nanoparticles (Au-NPs) in European beech and Scots pine trees. The results showed that both tree species were capable of taking up and transporting Au-NPs to their stem. European beech exhibited higher uptake of Au-NPs, possibly due to its higher stomatal density and wood characteristics.
Article
Materials Science, Multidisciplinary
Hao Ding, Clemence Gausse, Malin C. Dixon Wilkins, Lucy M. Mottram, Martin C. Stennett, Daniel Grolimund, Ryan Tappero, Sarah Nicholas, Shikuan Sun, Tomooki Shiba, C. Paraskevoulakos, Neil C. Hyatt, Claire L. Corkhill
Summary: The Fukushima Daiichi accident resulted in the creation of molten core-concrete interaction (MCCI) material, which is a mixture of degraded nuclear fuel material and other reactor components. Analysis of this material revealed the presence of various minerals containing U-Zr-O, as well as crystalline silicate phases and a Ce-bearing mineral called perclevite. The formation of perclevite was a result of a reaction between the U-Zr-O-depleted Ce-Nd-O melt and the silicate melt. Most of the U was found in the form of U4+, while Ce was present as Ce3+.
NPJ MATERIALS DEGRADATION
(2022)
