Article
Chemistry, Multidisciplinary
Guanxing Li, Songda Li, Zhong-Kang Han, Chen Zou, Hanglong Wu, Wentao Yuan, Beien Zhu, Yi Gao, Hangsheng Yang, Ze Zhang, Yong Wang
Summary: By studying the reconstruction of nanocrystalline SnO2 (110) surface using in-situ STEM, a new Sn2O model was determined and the activation mechanism of surface active sites was revealed.
Article
Chemistry, Multidisciplinary
Hojin Ahn, Hochan Ahn, Jihun An, Hyungjun Kim, Jong Wook Hong, Sang Woo Han
Summary: We have developed a synthesis method to study the surface strain-catalytic activity relationship of Pt{110} facets using rhombic dodecahedral Pd@Pt core-shell nanocrystals. The electrocatalytic activity of the Pd@Pt nanocrystals decreased as the Pt shells became thinner and applied more in-plane compressive surface strain. Density functional theory calculations revealed the characteristic strain-activity relationship of Pt{110} facets.
Article
Chemistry, Analytical
Yingzhen Chen, Christian Rodenbuecher, Klaus Wippermann, Carsten Korte
Summary: In this study, the electrochemical behavior of platinum electrodes in protic ionic liquids (PILs) was investigated using in situ Fourier-transform infrared spectroscopy coupled with cyclic voltammetry. The results provided direct evidence of the change of water at the Pt electrode surface due to Pt oxide formation and reduction. It was also found that anion adsorption could block catalytic sites and reducing it could enhance the ORR activity.
ANALYTICAL CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
Qi Zheng, Li Huang, Deliang Bao, Rongting Wu, Yan Li, Xiao Lin, Shixuan Du, Hong-Jun Gao
Summary: The linkage structures between monomers have significant impacts on the properties of polymers. In this study, the dihydropentalene linkage structure in poly-naphthalocyanine on Ag(110) surface was successfully constructed, and a possible formation path with reconstruction steps was proposed. The controlled experiment on Ag(100) surface showed that the grooved substrate is necessary for the formation of dihydropentalene structures. This work provides insights into the surface restricted reactions that can yield special structures in organic polymers.
Article
Chemistry, Physical
Aleksandra Selivanova, Andrey A. Saraev, Vasily V. Kaichev
Summary: The oxidation of ethanol on a Pt(1 1 1) single crystal surface was investigated using PM-IRRAS at near-ambient pressures. The study monitored reaction intermediates and the main reaction products in the gas phase, as well as adsorbed species on the platinum surface, during stepwise heating from room temperature to 600 K. The results showed that ethanol oxidation starts at 330 K, with acetaldehyde, acetic acid, CO2, and water detected as gas-phase products. Surface intermediates such as adsorbed acetaldehyde and ethoxy-groups were observed at low temperatures, while carbonates were the only surface intermediates at higher temperatures.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Regina M. Kluge, Eleftherios Psaltis, Richard W. Haid, Shujin Hou, Thorsten O. Schmidt, Oliver Schneider, Batyr Garlyyev, Federico Calle-Vallejo, Aliaksandr S. Bandarenka
Summary: This study uses EC-STM technique to investigate the ORR active areas of Pt5Gd and Pt5Pr in acidic media, and finds that compressed Pt-lanthanide (111) terraces contribute the most to the overall activity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Zhiyu Zou, Laerte L. Patera, Giovanni Comelli, Cristina Africh
Summary: Interface strain can significantly influence the mechanical, electronic, and magnetic properties of low-dimensional materials. Our study found that strain release is the main factor governing morphology during the growth of graphene on a nickel substrate, with the interplay of two driving forces leading to optimal matching at the interface.
Article
Chemistry, Physical
Daniel Eggart, Xin Huang, Anna Zimina, Jiuzhong Yang, Yang Pan, Xiulian Pan, Jan-Dierk Grunwaldt
Summary: The Pt/CeO2 catalysts have been studied for the direct catalytic conversion of methane to olefins, aromatics, and hydrogen. The Pt-Ce interface formed in the catalysts enhances the activation of methane and suppresses coke formation, significantly improving the catalytic performance of the ceria-based catalysts.
Article
Chemistry, Physical
Mingkai Zhang, Yong Zou, Sai Zhang, Yongquan Qu
Summary: In this study, we demonstrated an in situ modification induced by reactants to reconstruct the local interface of Pt nanoparticles anchored on CoFe layered double hydroxides (CoFe-LDH) supports, resulting in a highly selective synthesis of primary amines. The strong metal-support interaction between Pt metals and CoFe-LDH supports led to a highly electron-enriched surface of Pt, favoring the enrichment of NH4+ species and adsorption of NH3. This tailored interface created an interfacial stereo-hindrance effect, effectively suppressing side-reactions and preventing the formation of side-products. We anticipate that this in situ reconstruction of metal interfaces and the subsequent construction of local active site environments may provide a new approach for optimizing metal catalysts.
Article
Multidisciplinary Sciences
Biao Yang, Martin Uphoff, Yi-Qi Zhang, Joachim Reichert, Ari Paavo Seitsonen, Andreas Bauer, Christian Pfleiderer, Johannes V. Barth
Summary: Iron silicide (FeSi) exhibits unusual electronic gap characteristics in the sub-10 K regime, with distinct features identified through high-resolution tunneling spectroscopy and density functional theory calculations. The DFT-calculated band structure provides insights into the origin of these features and supports the emergence of surface metallicity in the low-temperature regime.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Instruments & Instrumentation
Katharina M. Golder, Bernhard Boeller, Gunter Stienen, Joern Sickerling, Joost Wintterlin
Summary: The study presents an automated gas sampling and injection unit designed for low concentrations of products in catalytic experiments on single crystal models. The system's performance was characterized by experiments on Fischer-Tropsch synthesis, achieving detection and quantification limits as low as 0.4 ppb.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Chemistry, Physical
Xiaoting Chen, Marc T. M. Koper
Summary: Using in situ electrochemical atomic force microscopy (EC-AFM), we observed that the presence of Na+ cations is necessary to trigger cathodic etching of polycrystalline Pt electrode; during cathodic corrosion, the surface structure of single-crystalline Pt electrode undergoes significant changes, resulting in a highly roughened surface.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Physics, Multidisciplinary
Dai Hao-Guang, Zha Fang-Xing, Chen Ping-Ping
Summary: The (110) surface of an In0.53Ga0.47As/InP hetero-structure grown by molecular beam epitaxy on an InP (001) substrate was characterized using cross-sectional scanning tunneling microscopy (XSTM). The study revealed differences in the current/voltage (I-V) characteristics compared to InP, and these differences were explained through statistical analysis and a three-dimensional TIBB model.
ACTA PHYSICA SINICA
(2021)
Article
Chemistry, Physical
Hyo Won Kim, Insu Jeon, Wonhee Ko, Seong Heon Kim
Summary: The anisotropic twofold symmetry of Ge(110) makes it unique for single-crystalline graphene growth. Growth of graphene on Ge(110) surface initiates unidirectionally from carbon cluster seeds, forming graphene nanoribbons (GNRs) that eventually transform into graphene nanoislands (GNIs) and coalesce into single crystalline monolayer graphene. STS measurements reveal GNRs with small bandgaps, induced by graphene confinement effect, providing insights into growth mechanism of graphene on Ge(110) surface under various synthesis conditions.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Zhengming Hao, Junjie Zhang, Miao Xie, Xuechao Li, Lina Wang, Ye Liu, Kaifeng Niu, Junbo Wang, Luying Song, Tao Cheng, Haiming Zhang, Lifeng Chi
Summary: In this study, we report the coupling of polyenes by transforming n-dotriacontane on a copper surface through on-surface cascade dehydrogenation, resulting in the formation of polyacetylene. Three distinct linkages have been observed using scanning tunneling microscope (STM) and noncontact atomic force microscope (nc-AFM). It was found that the defects can be effectively suppressed by adjusting the surface coverage, making it of general interest for uniform structure modulation.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zhu-Jun Wang, Jichen Dong, Linfei Li, Guocai Dong, Yi Cui, Yang Yang, Wei Wei, Raoul Blume, Qing Li, Li Wang, Xiaozhi Xu, Kaihui Liu, Cedric Barroo, Joost W. M. Frenken, Qiang Fu, Xinhe Bao, Robert Schloegl, Feng Ding, Marc-Georg Willinger
Article
Chemistry, Physical
M. Saedi, C. Sfiligoj, J. Verhoeven, J. W. M. Frenken
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Shouping Chen, Mufan Li, Mengyu Gao, Jianbo Jin, Matthijs A. van Spronsen, Miquel B. Salmeron, Peidong Yang
Article
Multidisciplinary Sciences
Christopher R. O'Connor, Matthijs A. van Spronsen, Tobias Egle, Fang Xu, Heath R. Kersell, Judit Oliver-Meseguer, Mustafa Karatok, Miquel Salmeron, Robert J. Madix, Cynthia M. Friend
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Yi-Hsien Lu, Carlos Morales, Xiao Zhao, Matthijs A. van Spronsen, Artem Baskin, David Prendergast, Peidong Yang, Hans A. Bechtel, Edward S. Barnard, D. Frank Ogletree, Virginia Altoe, Leonardo Soriano, Adam M. Schwartzberg, Miquel Salmeron
Article
Chemistry, Multidisciplinary
Jin Soo Lim, Jonathan Vandermause, Matthijs A. van Spronsen, Albert Musaelian, Yu Xie, Lixin Sun, Christopher R. O'Connor, Tobias Egle, Nicola Molinari, Jacob Florian, Kaining Duanmu, Robert J. Madix, Philippe Sautet, Cynthia M. Friend, Boris Kozinsky
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Physics, Condensed Matter
Christopher R. O'Connor, Jorge Anibal Boscoboinik, Mustafa Karatok, Matthijs A. van Spronsen
Summary: This article presents the experimental results of H 1s spectra and Ag 3d(5/2) spectra acquired using high-resolution synchrotron-radiation NAP-XPS technology.
SURFACE SCIENCE SPECTRA
(2021)
Article
Chemistry, Physical
Matthijs A. van Spronsen, Xiao Zhao, Maximilian Jaugstetter, Carlos Escudero, Tomas Duchon, Adrian Hunt, Iradwikanari Waluyo, Peidong Yang, Kristina Tschulik, Miquel B. Salmeron
Summary: In this study, X-ray absorption spectroscopy was employed to investigate the solid-liquid interface between TiO2 and H2O, revealing the sensitivity of the interface and the spectroscopic similarity between the water layer next to anatase and ice.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Multidisciplinary Sciences
S. Yu. Krylov, J. W. M. Frenken
Summary: This article uses a first-principles-based analysis to establish the atomistic mechanisms of frictional energy dissipation for a rigid object moving in a periodic surface potential landscape. The study identifies two key mechanisms, the continuous pumping of energy into resonant modes and the destructive interference of force contributions from excited phonon modes, which lead to dynamical stochastization. Furthermore, the transformation of mechanical energy into heat plays a minor role in friction, opening a new pathway for true control over friction.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Madhushri Bhar, Avishek Dey, Sourav Ghosh, Matthijs A. van Spronsen, Vimalnath Selvaraj, Y. Kaliprasad, Satheesh Krishnamurthy, Surendra K. Martha
Summary: The study introduces an environmentally friendly technique of graphite recycling by combining water leaching and atmospheric plasma jet printing, which significantly enhances the specific capacity and Li+ diffusivity of recycled graphite. Improving reversible Li+ storage by plasma activation of the graphitic structure is crucial for enhancing the sustainability of lithium-ion batteries.
Article
Materials Science, Coatings & Films
Gorsel Yetik, Alessandro Troglia, Saeedeh Farokhipoor, Stefan van Vliet, Jamo Momand, Bart J. Kooi, Roland Bliem, Joost W. M. Frenken
Summary: Microscopy and diffraction measurements were conducted on ultrathin binary alloy films of ruthenium and molybdenum obtained through standard sputter deposition. The films were found to be amorphous for compositions close to Ru50Mo50, accompanied by a significant reduction in roughness compared to equally thick films of either ruthenium or molybdenum. This reduction is attributed to the absence of the characteristic grain structure found in polycrystalline films of the individual elements.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Jack E. N. Swallow, Elizabeth S. Jones, Ashley R. Head, Joshua S. Gibson, Roey Ben David, Michael W. Fraser, Matthijs A. van Spronsen, Shaojun Xu, Georg Held, Baran Eren, Robert S. Weatherup
Summary: The reactions of H-2, CO2, and CO gas mixtures on the surface of Cu at 200 ? were investigated using AP-XPS and AtmP-NEXAFS spectroscopy. The order of gas dosing plays a crucial role in the catalyst chemical state, with metallic Cu preserved when H-2 is introduced before CO2. The addition of CO is essential for removing adsorbed oxygen and activating CO2 on the Cu surface, facilitating methanol synthesis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Zijie Sha, Gwilherm Kerherve, Matthijs A. van Spronsen, George E. Wilson, John A. Kilner, Georg Held, Stephen J. Skinner
Summary: A study investigated the surface reactions and composition of a mixed ionic and electronic conducting perovskite oxide. The results showed that the surface lattice oxygen is the significant redox active species, rather than the transition metal cations. The study also observed higher concentrations of surface oxygen vacancies and the formation of hydroxyl groups in water vapor. Furthermore, the study found that the concentration of Sr surface species increased over time in dry oxygen, while less Sr contents were observed in water vapor. The findings provide crucial understanding for the design and performance of electrocatalytic electrodes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Nare Janvelyan, Matthijs A. van Spronsen, Cheng Hao Wu, Zhen Qi, Matthew M. Montemore, Junjun Shan, Dmitri N. Zakharov, Fang Xu, J. Anibal Boscoboinik, Miquel B. Salmeron, Eric A. Stach, Maria Flyztani-Stephanopoulos, Juergen Biener, Cynthia M. Friend
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Physics, Condensed Matter
Christopher R. O'Connor, Jorge Anibal Boscoboinik, Mustafa Karatok, Matthijs A. van Spronsen
SURFACE SCIENCE SPECTRA
(2020)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
