Article
Chemistry, Physical
Nina N. Kurus, Alexander G. Milekhin, Roman Sklyar, Bedil M. Saidzhonov, Roman B. Vasiliev, Sergei Adichtchev, Nikolai Surovtsev, Alexander Latyshev, Dietrich R. T. Zahn
Summary: The phonon spectra of core/shell CdSe/CdS nanoplatelets with different shell thicknesses were studied, revealing frequency shifts of optical modes as the shell thickness increases, which can be explained in terms of the stress state in the core and shell, as well as the influence of phonon confinement.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Gleb I. Svirskiy, Alexander V. Generalov, Nikolay A. Vinogradov, Xenia O. Brykalova, Anatoly V. Vereshchagin, Oleg V. Levin, Andrey G. Lyalin, Alexei B. Preobrajenski, Alexander S. Vinogradov
Summary: Through X-ray photoemission and absorption spectroscopy combined with DFT calculations, the nature and structure of occupied and empty valence electronic states of the [Ni(Salen)] molecular complex have been studied, identifying the composition of high-lying occupied and low-lying unoccupied electronic states. The HOMO of the complex is mainly located on the phenyl rings of the salen ligand, while the states associated with the occupied Ni 3d-derived MOs are at higher binding energies, and the LUMO is located on the salen ligand and formed by the carbon atoms in phenyl groups.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Hebatallah Ali, Bernd Winter, Robert Seidel
Summary: The liquid-microjet technique combined with soft X-ray photoelectron spectroscopy is a powerful tool for investigating the electronic structure of liquid water and nonaqueous solvents and solutes, including nanoparticle suspensions. This Account focuses on NPs dispersed in water, exploring the interaction between water molecules and the surface of transition-metal oxide NPs.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Hao Peng, Yon Peng, Jingyun Lan, Jiancheng Zhou, Jiuyang Zhang
Summary: This work successfully introduces conjugated polymers into the system of liquid metals to create a stable, aqueous, and electrically conductive ink for flexible electronics. The ink shows high transparency and exceptional electrical robustness, making it suitable for various flexible circuits.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
S. Delhommaye, G. Radtke, Ch Brouder, S. P. Collins, S. Huotari, Ch Sahle, M. Lazzeri, L. Paulatto, D. Cabaret
Summary: This study investigates the effects of thermal nuclear motion on multipole transition channels in two core-level spectroscopies, XAS and XRS. It demonstrates the impact of temperature on transition channels and proposes a method to restore the symmetry of the spectra.
Article
Chemistry, Physical
Lidan Deng, Zheng Wang, Xingmao Jiang, Jie Xu, Zijian Zhou, Xiaozhong Li, Zhixiong You, Mingyue Ding, Tetsuya Shishido, Xiaowei Liu, Minghou Xu
Summary: This study demonstrates an efficient method for the synthesis of formaldehyde from CO2 through water catalysis, achieving high conversion and yield even at room temperature and ambient pressure. HCOOH is identified as an important reaction intermediate, and the presence of surface -OH groups in LDH and the hybrid electronic state of Ru catalyst contribute to the highly efficient formation of formaldehyde.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Zining Zhou, Yun Hau Ng, Shengju Xu, Siyuan Yang, Qiongzhi Gao, Xin Cai, Jihai Liao, Yueping Fang, Shengsen Zhang
Summary: Alloying with other metals and coating a carbon layer outside can improve the efficiency and durability of copper catalysts for formaldehyde dehydrogenation to produce hydrogen, making them promising catalysts for energy recovery from industrial formaldehyde wastewater.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Ecology
Ben P. Diaz, Ehud Zelzion, Kimberly Halsey, Peter Gaube, Michael Behrenfeld, Kay D. Bidle
Summary: Marine phytoplankton exhibit specific transcriptional responses to changes in mixed layer depth, including downregulation of core photosynthesis and carbon fixation genes and upregulation of genes involved in carbon storage degradation. Additionally, there are divergent transcriptional patterns for photosystem light harvesting complex genes among different phytoplankton genera during mixed layer shallowing. Furthermore, there are changes in the activity of virus infection in response to mixed layer shallowing, with increased infection in diatoms and decreased infection in green algae.
Article
Materials Science, Ceramics
Komal K. Jani, Divyesh V. Barad, Pooja Y. Raval, Monika Nehra, Nimish H. Vasoya, Narendra Jakhar, Kunal B. Modi, Sandeep Kumar, Dong-Kwon Lim, Rishi Kumar Singhal
Summary: The electronic structure study of the quadruple perovskite series reveals the valence states of Ti, Cu, and Ca ions, as well as the possible presence of surface atoms and hybridization phenomena. Additionally, oxygen vacancies may partially contribute to the shift in the O1s spectra peaks.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Zining Zhou, Meng Wei, Guangxing Yang, Wengbo Du, Feng Peng, Yueping Fang, Yingju Liu, Shengsen Zhang, Rongliang Qiu
Summary: Modulating the electronic properties of non-noble metal-based catalysts and designing a photoinduced electron-rich surface structure improved the catalytic efficiency of formaldehyde conversion to hydrogen.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Runquan Wang, Yuerong Zhang, Wanping Chen, Yuan Tian, Kai Song, Jiaxian Li, Guoying Wang, Gaofeng Shi
Summary: Bi-based catalysts have excellent photochemical properties and high activity, with the d orbital of V and W elements influencing the energy band structure and activity, as revealed by density functional theory calculations.
Article
Chemistry, Multidisciplinary
Blaise L. Geoghegan, Yang Liu, Sergey Peredkov, Sebastian Dechert, Franc Meyer, Serena DeBeer, George E. Cutsail
Summary: A combination of Cu K-edge X-ray absorption and Cu K beta valence-to-core X-ray emission spectroscopies can be used to characterize the formal oxidation states of organometallic copper complexes. These methods are crucial for investigating the electronic structures of highly covalent copper complexes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Hai-Jun Liu, Ning Yu, Xiao-Qing Yuan, Hui-Ying Zhao, Xin-Yu Zhang, Yong-Ming Chai, Bin Dong
Summary: A facile strategy is developed to fabricate FeS-Co9S8 Schottky heterostructures, which exhibit high activity and stability for oxygen evolution reaction (OER).
Article
Chemistry, Multidisciplinary
Tom A. J. Welling, Kanako Watanabe, Albert Grau-Carbonell, Joost de Graaf, Daisuke Nagao, Arnout Imhof, Marijn A. van Huis, Alfons van Blaaderen
Summary: The core position of yolk-shell or rattle-type particles can be tuned by adding salt in dilute solutions, and the stability of core-shell interactions is affected by salt concentration and the use of deionized water. The liquid-cell electron microscopy technique provides high spatial resolution for studying nanoparticle interactions, making rattle particles a powerful experimental model system.
Article
Engineering, Environmental
Xinyi Zhou, Yuanxia Li, Ji Chen, Qiaoji Zheng, Yu Huo, Fengyu Xie, Dunmin Lin
Summary: In this study, urchin-like Co-doped VS4 microspheres (Co-VS4-δ-x) were synthesized as an advanced cathode material for AZIBs. The introduction of active multivalent Co ions achieved charge rearrangement and the widening of layer spacing, reducing transfer resistance and interfacial attraction. The formation of sulfur defects shortened Zn2+ transport distance and enhanced the electrical conductivity. The urchin-like micromorphology increased contact area and active sites. The Co-VS4-δ-x exhibited specific capacities of 306.4 mAh g-1 and 270.7 mAh g-1 at 0.5A g-1 and 5A g-1, respectively, with excellent cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Ricardo R. T. Marinho, Marie-Madeleine Walz, Victor Ekholm, Gunnar Ohrwall, Olle Bjorneholm, Arnaldo Naves de Brito
JOURNAL OF PHYSICAL CHEMISTRY B
(2017)
Article
Chemistry, Multidisciplinary
Isaak Unger, Robert Seidel, Stephan Thuermer, Marvin N. Pohl, Emad F. Aziz, Lorenz S. Cederbaum, Eva Muchova, Petr Slavicek, Bernd Winter, Nikolai V. Kryzhevoi
Article
Chemistry, Physical
L. Puskar, E. Ritter, U. Schade, M. Yandrasits, S. J. Hamrock, M. Schaberg, E. F. Aziz
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Physics, Multidisciplinary
D. Ceolin, N. V. Kryzhevoi, Ch. Nicolas, W. Pokapanich, S. Choksakulporn, P. Songsiriritthigul, T. Saisopa, Y. Rattanachai, Y. Utsumi, J. Palaudoux, G. Ohrwall, J. -P. Rueff
PHYSICAL REVIEW LETTERS
(2017)
Article
Chemistry, Physical
Wandared Pokapanich, Olle Bjorneholm, Gunnar Ohrwall, Maxim Tchaplyguine
RADIATION PHYSICS AND CHEMISTRY
(2017)
Article
Chemistry, Physical
Victor Ekholm, Mario Vazdar, Philip E. Mason, Erik Bialik, Marie-Madeleine Walz, Gunnar Ohrwall, Josephina Werner, Jan-Erik Rubensson, Pavel Jungwirth, Olle Bjorneholm
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Instruments & Instrumentation
L. Mueller, G. Hartmann, S. Schleitzer, M. H. Berntsen, M. Walther, R. Rysov, W. Roseker, F. Scholz, J. Seltmann, L. Glaser, J. Viefhaus, K. Mertens, K. Bagschik, R. Froemter, A. De Fanis, I. Sheychuk, K. Medjanik, G. Ohrwall, H. P. Oepen, M. Martins, M. Meyer, G. Gruebel
REVIEW OF SCIENTIFIC INSTRUMENTS
(2018)
Article
Materials Science, Coatings & Films
Nils Martensson, Alexander Foehlisch, Svante Svensson
Summary: This article reviews the importance of the development of modern photoelectron spectroscopy, with a special focus on the research at Uppsala University and at Berkeley. The influence of two pioneers, Kai Siegbahn and Dave Shirley, is highlighted. The early interaction between the two centers helped to kick-start the field, and both laboratories continue to play a crucial role in creating new experimental capabilities and developing the theoretical understanding of spectroscopic processes.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Review
Chemistry, Multidisciplinary
Hans Agren, Olle Bjorneholm, Gunnar Ohrwall, Vincenzo Carravetta, Arnaldo Naves de Brito
Summary: We unraveled the microscopic properties of ethanol-water solutions at different concentrations through experimental and theoretical simulations. At low concentrations, ethanol molecules form a film at the surface, while complex intermolecular interactions occur in the bulk.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Olle Bjorneholm, Gunnar Ohrwall, Arnaldo Naves de Brito, Hans Agren, Vincenzo Carravetta
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Physical
Vincenzo Carravetta, Anderson Herbert de Abreu Gomes, Ricardo dos Reis Teixeira Marinho, Gunnar Ohrwall, Hans Agren, Olle Bjorneholm, Arnaldo Naves de Brito
Summary: The study reveals the azeotropic behavior of ethanol and water mixture at specific concentrations, and investigates the surface composition dependence on concentration. Experimental characterization and simulation using a micro-jet photoelectron spectrometer and molecular dynamics are performed. The results demonstrate that the azeotropic behavior arises from the concentration dependence of surface composition.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Environmental Sciences
Geethanjali Gopakumar, Isaak Unger, Clara-Magdalena Saak, Gunnar Ohrwall, Arnaldo Naves de Brito, Tulio Costa Rizuti da Rocha, Christophe Nicolas, Carl Caleman, Olle Bjorneholm
Summary: In this study, we used photoelectron spectroscopy to investigate the change in surface composition of aqueous solutions at different pH values. We found that the relative distribution of inorganic ions at the liquid water surface changed by a factor of 4-5, which was attributed to ion pairing and the formation of charged layers.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Chemistry, Physical
Geethanjali Gopakumar, Eva Muchova, Isaak Unger, Sebastian Malerz, Florian Trinter, Gunnar Oehrwall, Filippo Lipparini, Benedetta Mennucci, Denis Ceolin, Carl Caleman, Iain Wilkinson, Bernd Winter, Petr Slavicek, Uwe Hergenhahn, Olle Bjorneholm
Summary: This study investigates the non-local autoionization phenomenon of different ions in aqueous solution and identifies the ICD timescales of Mg2+ and Al3+ as 76 fs and 34 fs, respectively. Understanding of the non-local decay processes is provided along with the microscopic explanation.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Victor Ekholm, Carl Caleman, Nicklas Bjarnhall Prytz, Marie-Madeleine Walz, Josephina Werner, Gunnar Ohrwall, Jan-Erik Rubensson, Olle Bjorneholm
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Alexandre Moguilevski, Martin Wilke, Gilbert Grell, Sergey I. Bokarev, Saadullah G. Aziz, Nicholas Engel, Azhr A. Raheem, Oliver Kuehn, Igor Yu. Kiyan, Emad F. Aziz