S. Helveg

发表

Atomic-scale imaging of carbon nanofibre growth

J. Nørskov, F. Abild‐Pedersen, J. Rostrup-Nielsen, 2004, Nature.

Mechanisms for catalytic carbon nanofiber growth studied by ab initio density functional theory calculations

J. Nørskov, F. Abild‐Pedersen, J. Rostrup-Nielsen, 2006 .

First principles calculations and experimental insight into methane steam reforming over transition metal catalysts

J. Nørskov, T. Bligaard, F. Abild‐Pedersen, 2008 .

Size-dependent structure of MoS2 nanocrystals.

F. Besenbacher, J. Kibsgaard, E. Laegsgaard, 2007, Nature nanotechnology.

Growth Mechanism for Single- and Multi-Layer MoS2 Nanocrystals

S. Helveg, L. P. Hansen, Erik Johnson, 2014 .

Atomic-scale electron microscopy at ambient pressure.

J. F. Creemer, P. Sarro, S. Helveg, 2008, Ultramicroscopy.

Sintering of nickel catalysts: Effects of time, atmosphere, temperature, nickel-carrier interactions, and dopants

J. Sehested, S. Helveg, J.A.P. Gelten, 2006 .

Probing surface-sensitive redox properties of VOx/TiO2 catalyst nanoparticles.

M. Ek, M. Skoglundh, S. B. Rasmussen, 2021, Nanoscale.

In situ studies of NO reduction by H2 over Pt using surface X-ray diffraction and transmission electron microscopy.

J. Frenken, C. Elkjær, P. Kooyman, 2017, Physical chemistry chemical physics : PCCP.

Step edge structures on the anatase TiO2 (001) surface studied by atomic-resolution TEM and STM.

M. Ek, I. Beinik, A. Bruix, 2018, Faraday discussions.

In Situ Electron Energy Loss Spectroscopy Studies of Gas-Dependent Metal−Support Interactions in Cu/ZnO Catalysts

J. Wagner, S. Helveg, P. L. Hansen, 2003 .

Transient behavior of Cu/ZnO-based methanol synthesis catalysts

I. Chorkendorff, J. Nerlov, P. Vesborg, 2009 .

Support Functionalization To Retard Ostwald Ripening in Copper Methanol Synthesis Catalysts

C. Gommes, C. Elkjær, K. P. Jong, 2015 .

Relating rates of catalyst sintering to the disappearance of individual nanoparticles during Ostwald ripening.

Sivakumar R. Challa, A. Datye, F. Garzon, 2011, Journal of the American Chemical Society.

Aerobic Oxidation of Alcohols over Gold Catalysts: Role of Acid and Base

C. Christensen, S. Klitgaard, S. Helveg, 2008 .

Visualizing the stoichiometry of industrial-style Co-Mo-S catalysts with single-atom sensitivity.

Yuanyuan Zhu, Q. Ramasse, P. G. Moses, 2014, Angewandte Chemie.

Revealing the Formation of Copper Nanoparticles from a Homogeneous Solid Precursor by Electron Microscopy.

C. Gommes, I. Chorkendorff, P. D. de Jongh, 2016, Journal of the American Chemical Society.

Location of Co and Ni promoter atoms in multi-layer MoS 2 nanocrystals for hydrotreating catalysis

Q. Ramasse, P. G. Moses, C. Kisielowski, 2016 .

An industrial perspective of the impact of Haldor Topsøe on (in situ) electron microscopy in catalysis

S. Helveg, 2015 .

Atomic-scale structure of Co-Mo-S nanoclusters in hydrotreating catalysts

I. Stensgaard, E. Lægsgaard, F. Besenbacher, 2001 .

Recent STM, DFT and HAADF-STEM studies of sulfide-based hydrotreating catalysts: Insight into mechanistic, structural and particle size effects

J. Nørskov, F. Besenbacher, J. Kibsgaard, 2008 .

Imaging MoS2 nanocatalysts with single-atom sensitivity.

Q. Ramasse, C. Kisielowski, S. Helveg, 2010, Angewandte Chemie.

Innentitelbild: Atomic‐Scale Edge Structures on Industrial‐Style MoS2 Nanocatalysts (Angew. Chem. 43/2011)

Q. Ramasse, C. Kisielowski, S. Helveg, 2011 .

Inside Cover: Atomic‐Scale Edge Structures on Industrial‐Style MoS2 Nanocatalysts (Angew. Chem. Int. Ed. 43/2011)

Q. Ramasse, C. Kisielowski, S. Helveg, 2011 .

Observing atomic resolution dynamics of soft materials with controlling dose rate

D. Van dyck, Fu-Rong Chen, S. Helveg, 2021, Microscopy and Microanalysis.

Whisker carbon in perspective

J. Rostrup-Nielsen, J. Sehested, S. Helveg, 2011 .

Sites for catalysis and electrochemistry in solid oxide fuel cell (SOFC) anode

N. Christiansen, J. Rostrup-Nielsen, J. Hansen, 2006 .

Electron Microscopy and Diffraction

A. Datye, S. Helveg, P. L. Hansen, 2008 .

Impact of the synthesis route of supported copper catalysts on the performance in the methanol synthesis reaction

K. P. Jong, J. Sehested, S. Helveg, 2016 .

Bulk Hydrodesulfurization Catalyst Obtained by Mo(CO)6 Grafting on the Metal–Organic Framework Ni2(2,5-dihydroxoterephthalate)

E. A. Quadrelli, Cherif Larabi, S. Helveg, 2012 .

Morphology, Dispersion, and Stability of Cu Nanoclusters on Clean and Hydroxylated #-Al

K. Venkataramani, F. Besenbacher, J. Lauritsen, 2008 .

Ostwald ripening in a Pt/SiO2 model catalyst studied by in situ TEM

S. Dahl, I. Chorkendorff, M. Skoglundh, 2011 .

High-resolution in situ and ex situ TEM studies on graphene formation and growth on Pt nanoparticles

A. Bell, P. Specht, C. Kisielowski, 2012 .

Atomic structure of a spinel-like transition Al2O3(100) surface.

A. Foster, T. Musso, J. Lauritsen, 2014, Physical review letters.

Direct Observations of Ceo2-Catalyzed Soot Oxidation at the Nano-Scale Using Environmental Transmission Electron Microscopy

S. Dahl, S. Simonsen, S. Helveg, 2008 .

Vanadia-Based Catalysts for the Sulfur Dioxide Oxidation Studied In Situ by Transmission Electron Microscopy and Raman Spectroscopy

P. Beato, S. Helveg, F. Cavalca, 2017 .

Substrate size-selective catalysis with zeolite-encapsulated gold nanoparticles.

J. Grunwaldt, C. Christensen, S. Simonsen, 2010, Angewandte Chemie.

Observing gas-catalyst dynamics at atomic resolution and single-atom sensitivity.

P. Specht, C. Kisielowski, J. Jinschek, 2015, Micron.

Reversible Atomization and Nano-Clustering of Pt as a Strategy for Designing Ultra-Low-Metal-Loading Catalysts

J. Nørskov, A. Rappe, I. Chorkendorff, 2022, The Journal of Physical Chemistry C.

Method for local temperature measurement in a nanoreactor for in situ high-resolution electron microscopy.

J. F. Creemer, P. Kooyman, L. Mele, 2013, Ultramicroscopy.

A new generic method to extract stoichiometric and dynamic information from the exit-wave for thin sample

D. Van dyck, S. Helveg, C. Kisielowski, 2021, Microscopy and Microanalysis.

Stability of platinum nanoparticles supported on SiO2/Si(111): a high-pressure X-ray photoelectron spectroscopy study.

F. Besenbacher, L. Ono, M. Salmeron, 2012, ACS nano.

Comment on, "On the influence of the electron dose-rate on the HRTEM image contrast", by Juri Barthel, Markus Lentzen, Andreas Thust, ULTRAM12246 (2016), http://dx.doi.org/10.1016/j.ultramic.2016.11.016.

D. Van dyck, P. Specht, C. Kisielowski, 2017, Ultramicroscopy.

How a gold substrate can increase the reactivity of a Pt overlayer

J. Nørskov, I. Stensgaard, E. Lægsgaard, 1999 .

Reconstructing the exit wave of 2D materials in high-resolution transmission electron microscopy using machine learning

J. Schiøtz, B. Barton, S. Helveg, 2022, Ultramicroscopy.

One-dimensional metallic edge states in MoS2.

J. Nørskov, K. Jacobsen, M. Bollinger, 2001, Physical review letters.

Energetics and dynamics of Pt dimers on Pt(110)-(1×2)

I. Stensgaard, E. Lægsgaard, F. Besenbacher, 2000 .

Novel Mechanism for Diffusion of One-Dimensional Clusters: Pt/Pt\(110\)-\(1×2\)

Flemming Besenbacher, I. Stensgaard, E. Lægsgaard, 1999 .

Atomic-resolution Electron Microscopy at Ambient Pressure

J. F. Creemer, P. Sarro, S. Helveg, 2008 .

In situ transmission electron microscopy investigation of Ce(IV) and Pr(IV) reducibility in a Rh (1%)/Ce0.8Pr0.2O(2-x) catalyst.

G. Blanco, J. Pintado, J. Calvino, 2003, Chemical communications.

Atomic-Resolution Environmental Transmission Electron Microscopy for Probing Gas–Solid Reactions in Heterogeneous Catalysis

S. Giorgio, S. Helveg, P. L. Hansen, 2007 .

Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”

I. Chorkendorff, T. Fujitani, J. Nakamura, 2017, Science.

Location and coordination of promoter atoms in Co- and Ni-promoted MoS2-based hydrotreating catalysts

J. Nørskov, E. Lægsgaard, F. Besenbacher, 2007 .

Quantification of tip-broadening in non-contact atomic force microscopy with carbon nanotube tips

S. Simonsen, J. Lauritsen, S. Helveg, 2012, Nanotechnology.

Atomic-scale studies of metallic nanocluster catalysts by in situ high-resolution transmission electron microscopy

S. Helveg, P. L. Hansen, 2006 .

Growth of encapsulating carbon on supported Pt nanoparticles studied by in situ TEM

A. Bell, Jason Wu, S. Helveg, 2016 .

On the Role of Metal Step-Edges in Graphene Growth

J. Nørskov, F. Abild‐Pedersen, B. Hinnemann, 2010 .

Renewable hydrogen: carbon formation on Ni and Ru catalysts during ethanol steam-reforming

Jens R. Rostrup-Nielsen, Claus H. Christensen, Søren Dahl, 2007 .

A MEMS Reactor for Atomic-Scale Microscopy of Nanomaterials Under Industrially Relevant Conditions

J. F. Creemer, P. Sarro, P. Kooyman, 2010, Journal of Microelectromechanical Systems.

MEMS Nanoreactor for Atomic-Resolution Microscopy of Nanomaterials in their Working State

J. F. Creemer, P. Sarro, P. Kooyman, 2009, 2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems.

Atomic-Scale Imaging of Supported Metal Nanocluster Catalysts in the Working State

A. Datye, S. Helveg, P. L. Hansen, 2006 .

Controllable etching of MoS2 basal planes for enhanced hydrogen evolution through the formation of active edge sites

F. Besenbacher, M. Dong, Zegao Wang, 2018, Nano Energy.

Quantifying the promotion of Cu catalysts by ZnO for methanol synthesis

I. Chorkendorff, C. Elkjær, J. Sehested, 2016, Science.

Atom-Resolved Imaging of Dynamic Shape Changes in Supported Copper Nanocrystals

Jens R. Rostrup-Nielsen, J. Rostrup-Nielsen, J. Wagner, 2002, Science.

Detecting structural variances of Co3O4 catalysts by controlling beam-induced sample alterations in the vacuum of a transmission electron microscope

I. Sharp, P. Specht, C. Kisielowski, 2016, Advanced Structural and Chemical Imaging.

The energies of formation and mobilities of Cu surface species on Cu and ZnO in methanol and water gas shift atmospheres studied by DFT

T. Bligaard, B. Hinnemann, J. Sehested, 2012 .

Ceria-catalyzed soot oxidation studied by environmental transmission electron microscopy

Søren Dahl, S. Dahl, S. Simonsen, 2008 .

First-principles investigations of Ni3Al(111) and NiAl(110) surfaces at metal dusting conditions

J. Nørskov, F. Abild‐Pedersen, B. Hinnemann, 2011 .

Probing the Boundary between Classical and Quantum Mechanics by Analyzing the Energy Dependence of Single-Electron Scattering Events at the Nanoscale

D. Van dyck, P. Specht, S. Helveg, 2023, Nanomaterials.

Probing atom dynamics of excited Co-Mo-S nanocrystals in 3D

D. Van dyck, C. Kisielowski, Fu-Rong Chen, 2021, Nature Communications.

In situ study of CO oxidation on HOPG-supported Pt nanoparticles.

F. Besenbacher, J. Knudsen, J. Schnadt, 2013, Chemphyschem : a European journal of chemical physics and physical chemistry.

Structure–activity relationships of Pt/Al2O3 catalysts for CO and NO oxidation at diesel exhaust conditions

Søren Dahl, S. Dahl, J. Grunwaldt, 2012 .

Fundamental investigations of catalyst nanoparticles

I. Chorkendorff, C. Elkjær, J. Sehested, 2016 .

Visualization of oscillatory behaviour of Pt nanoparticles catalysing CO oxidation.

J. F. Creemer, R. Rijn, C. Elkjær, 2014, Nature materials.

Stable cation inversion at the MgAl2O4(100) surface.

A. Stierle, E. Lundgren, F. Besenbacher, 2011, Physical review letters.

Image resolution and sensitivity in an environmental transmission electron microscope.

J. Jinschek, S. Helveg, 2012, Micron.

Direct observations of oxygen-induced platinum nanoparticle ripening studied by in situ TEM.

Ib Chorkendorff, Søren Dahl, Magnus Skoglundh, 2010, Journal of the American Chemical Society.

Effect of Particle Morphology on the Ripening of Supported Pt Nanoparticles

Ib Chorkendorff, Jeppe V. Lauritsen, Søren Dahl, 2012 .

Enhancement of surface self-diffusion of platinum atoms by adsorbed hydrogen

J. Nørskov, K. Jacobsen, I. Stensgaard, 1999, Nature.

Activation of a Cu/ZnO catalyst for methanol synthesis

M. Nielsen, F. Rasmussen, R. Feidenhans'l, 2006 .

Formation and sintering of Pt nanoparticles on vicinal rutile TiO₂ surfaces.

F. Besenbacher, J. Lauritsen, S. Helveg, 2014, Physical chemistry chemical physics : PCCP.

Oxygen adsorption on Pt(110)-(1×2): new high-coverage structures

J. Nørskov, K. Jacobsen, I. Stensgaard, 1999 .

Role of surface elastic relaxations in an O-induced nanopattern on Pt(110)-(1 x 2).

B. Hammer, N. Bartelt, F. Besenbacher, 2007, Physical Review Letters.

Nucleation and growth of Pt nanoparticles on reduced and oxidized rutile TiO₂ (110).

B. Hammer, F. Besenbacher, J. Lauritsen, 2014, The Journal of chemical physics.

Nano-Particles in Heterogeneous Catalysis

S. Helveg, B. Clausen, A. M. Molenbroek, 2009 .

Dynamic Behavior of CuZn Nanoparticles under Oxidizing and Reducing Conditions

I. Chorkendorff, C. Elkjær, J. Sehested, 2015 .

Stabilization principles for polar surfaces of ZnO.

G. Kresse, F. Besenbacher, J. Lauritsen, 2011, ACS nano.

Chemical identification of point defects and adsorbates on a metal oxide surface by atomic force microscopy

F. Besenbacher, A. Foster, A. Kühnle, 2006, Nanotechnology.

Al2O3(1120) surface as a template for the ordered growth of Ni and Co nanoclusters.

K. Venkataramani, F. Besenbacher, J. Lauritsen, 2012, Physical chemistry chemical physics : PCCP.

Topotactic Growth of Edge-Terminated MoS2 from MoO2 Nanocrystals.

J. Rossmeisl, P. G. Moses, Christian Dahl-Petersen, 2018, ACS nano.

Single-atom Pt promotion of industrial Co-Mo-S catalysts for ultra-deep hydrodesulfurization

P. G. Moses, S. Helveg, H. Falsig, 2021 .

Atomic-scale edge structures on industrial-style MoS2 nanocatalysts.

Christian Kisielowski, Q. Ramasse, C. Kisielowski, 2011, Angewandte Chemie.

On the role of the gas environment, electron-dose-rate, and sample on the image resolution in transmission electron microscopy

M. Ek, C. Damsgaard, S. Helveg, 2016, Advanced Structural and Chemical Imaging.

Unit cell thick nanosheets of zeolite H-ZSM-5: Structure and activity

K. Lillerud, B. Arstad, P. Beato, 2013, Topics in Catalysis.

Exploring the mobility of Cu in bimetallic nanocrystals to promote atomic-scale transformations under a reactive gas environment

Jack K. Pedersen, J. Rossmeisl, K. Jensen, 2023, Journal of Materials Chemistry A.

Ordering of monodisperse Ni nanoclusters by templating on high-temperature reconstructed α-Al2O3(0001)

K. Venkataramani, F. Besenbacher, B. Hinnemann, 2010, Nanotechnology.

Atomic-Scale Structure and Stability of the 31 × 31 R 9 ° Surface of Al 2 O 3 ( 0001 )

F. Besenbacher, B. Hinnemann, J. Lauritsen, 2009 .

First-principles investigations of the Ni3Sn alloy at steam reforming conditions

Jens K. Nørskov, Berit Hinnemann, Frank Abild-Pedersen, 2009 .

The catalytic effects of sulfur in ethane dehydroaromatization.

F. Joensen, S. Helveg, S. Kegnæs, 2020, Chemical communications.

Noncontact atomic force microscopy imaging of atomic structure and cation defects of the polar MgAl2O4 (100) surface: Experiments and first-principles simulations

F. Besenbacher, B. Hinnemann, A. Foster, 2011 .

Visualizing atomic-scale redox dynamics in vanadium oxide-based catalysts

Q. Ramasse, M. Ek, S. Helveg, 2017, Nature Communications.

Atomic-scale structure of single-layer MoS2 nanoclusters

Clausen, J. Nørskov, I. Stensgaard, 2000, Physical review letters.

Nanoscience: Tools and Devices Nanoscience: Tools and Devices Lectures Abstracts Exploring Function and Interaction of Cellular Machines: Nanotechnolgy Meets Molecular Biology Formation and Stability of Nanostructures on Metal Surfaces Force Spectroscopy of Single Dna Molecules Fluorescence Correlat

H. K. Wickramasinghe, G. Binnig, S. Hell, 2022 .

Coarsening of Pd nanoparticles in an oxidizing atmosphere studied by in situ TEM

S. Dahl, I. Chorkendorff, M. Skoglundh, 2016 .

Imaging MoS2 nanocatalysts with single-atom sensitivity.

Q. Ramasse, C. Kisielowski, S. Helveg, 2010, Angewandte Chemie.

Stabilization principles for polar surfaces of ZnO.

G. Kresse, F. Besenbacher, J. Lauritsen, 2011, ACS nano.