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Single atom catalyst (SAC) is a vivid new area of research in catalysis. However, the activity in CO oxidation of isolated Pt or Pd atoms, generally supported on an oxide powder, is still controversial. Furthermore, the steady state…

Materials Science · Physics 2021-10-12 Georges Sitja , Claude Henry

Unlocking the design of Li-S batteries where no shuttle effects appears, and thus their energy storage capacity does not diminish over time, would enable the manufacturing of energy storage devices more performant than the current Li-ion…

Materials Science · Physics 2022-06-22 Eleftherios I. Andritsos , Kevin Rossi

Single particle localization of an ultra-cold atom is studied in one dimension when the atom is confined by an optical lattice and by the incommensurate potential of a high-finesse optical cavity. In the strong coupling regime the atom is a…

Disordered Systems and Neural Networks · Physics 2018-12-05 Jan Major , Giovanna Morigi , Jakub Zakrzewski

Indium oxide offers optical transparency paired with electric conductivity, a combination required in many optoelectronic applications. The most-stable In2O3(111) surface has a large unit cell (1.43 nm lattice constant). It contains a…

The imaging of active nanoparticles represents a milestone in decoding heterogeneous catalysts dynamics. We report the facet resolved, surface strain state of a single PtRh alloy nanoparticle on SrTiO3 determined by coherent x-ray…

A comprehensive uncertainty quantification framework has been developed for integrating computational and experimental kinetic data and to identify active sites and reaction mechanisms in catalysis. Three hypotheses regarding the active…

Chemical Physics · Physics 2017-10-11 Eric A. Walker , Donald Mitchell , Gabriel A. Terejanu , Andreas Heyden

Rearrangement of atoms due to broken translational symmetries at the surface of SrTiO$_3$ is scarcely debatable in the present day scenario. Actual concern demands to unveil the true structure and precise mechanism responsible for atomic…

Materials Science · Physics 2018-11-08 Adeel Y Abid , Ning Li , Ayaz Arif , Peng Gao

Reducible oxides are widely used catalyst supports that can increase oxidation reaction rates by transferring their lattice oxygen at the metal-support interface. The interfacial oxidation process is typically described in terms of a…

Materials Science · Physics 2021-04-05 Joshua L. Vincent , Peter A. Crozier

We introduce SAFT-P, a plaquette-level extension of Statistical Associating Fluid Theory for patchy particles. By treating local clusters as associating superparticles and contracting their free energy back to monomer densities, SAFT-P…

Soft Condensed Matter · Physics 2026-03-09 Hamza Coban , Alfredo Alexander-Katz

Single-atom catalysts (SACs) maximize atom efficiency and exhibit unique electronic structures, yet realizing precise and scalable atomic dispersion remains a key challenge. Here, we report a non-equilibrium strategy for the scalable…

Materials Science · Physics 2026-01-21 Yue Li , Yang Xu , Yunbiao Zhao , Mingwei Cui , Xiner Chen , Liu Qian , Jin Zhang , Xueting Feng , Ziqiang Zhao

Spin-orbit coupling (SOC) plays an important role in determining the structural and electronic properties of recently proposed two-dimensional planar pentagonal materials. In this work, density functional theory calculations are employed to…

Complete catalytic oxidation of methane is an effective strategy for greenhouse gas mitigation and clean energy conversion; yet, ensuring both high catalytic activity and stability with palladium-based catalysts remains a challenge. In the…

The transport of H adatoms across oxide supports plays an important role in many catalytic reactions. We investigate the dynamics of H/Fe3O4(001) between 295 and 382 K. By scanning tunneling microscopy at frame rates of up to 19.6 fps, we…

The exceptional electronic, optical and chemical properties of two-dimensional materials strongly depend on the 3D atomic structure and crystal defects. Using Re-doped MoS2 as a model, here we develop scanning atomic electron tomography…

Understanding the mechanism and developing strategies toward efficient electrocatalysis at gas-liquidsolid interfaces are important yet challenging. In the past decades, researchers have devoted many efforts to improving catalyst activity…

Applied Physics · Physics 2021-02-22 Yuting Luo , Sum Wai Chiang , Lei Tang , Zhiyuan Zhang , Fengning Yang , Qiangmin Yu , Baofu Ding , Bilu Liu

The role of layer disorder is important in establishing the topological phases of MoTe${_2}$. A rich tapestry of atomic ordering influences the structural phase transitions (SPTs), but there is little understanding of the mechanistic…

Materials Science · Physics 2023-12-07 Sumit Khadka , Leighanne C. Gallington , Byron Freelon

It is challenging to parameterize the force field for calcium ions (Ca2+) in calcium-binding proteins because of their unique coordination chemistry that involves the surrounding atoms required for stability. In this work, we observed wide…

Biomolecules · Quantitative Biology 2021-08-03 Pengzhi Zhang , Jaebeom Han , Piotr Cieplak , Margaret. S. Cheung

Electrode-potential-induced dynamic coordination is an essential factor governing the performance of graphene-embedded single-atom catalysts (SACs). While previous studies have primarily centered on structural dynamics at the metal site,…

Materials Science · Physics 2026-02-05 Jiahang Li , Suhang Li , Chong Yan , Qinzhuang Liu , Jiajun Yu , Dongwei Ma

Zn-air battery (ZAB) has distinguished itself as new generation of energy storage device due to the high theoretical energy density and its performance relies on the oxygen reduction reaction (ORR) performance of the cathode catalysts.…

Applied Physics · Physics 2020-12-21 Kwun Nam Hui

Heterogeneous catalysts based on Single Atom Alloys (SAA) play a significant role in numerous technical processes. The fundamental working principles of these systems, however, remain poorly understood, especially the aspects related to the…