Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Occult <i>Helicobacter pylori</i> infection in children: molecular detection and association with gastric dysbiosis.

Frontiers in microbiology·2026
Same author

Cherry microbiota and metabolites with planting altitude of <i>Coffea arabica</i> in Baoshan of China.

Frontiers in nutrition·2026
Same author

A 12-year hospital-based surveillance of syphilis in Hanzhong, China: shifting epidemics and implications for targeted prevention.

BMC public health·2026
Same author

Liberating Free Coal Molecules by Exfoliation of Aggregated Coal.

ACS omega·2026
Same author

Unlocking the role of indium ions in stabilizing zinc negative electrodes in highly acidic electrolytes for high-voltage aqueous Zn batteries.

Materials horizons·2026
Same author

Genome editing of medicinal plants: Advances, challenges, and prospects.

Journal of integrative plant biology·2026

Related Experiment Video

Updated: May 21, 2026

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
06:14

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Published on: September 11, 2018

New surfaces stabilized by adsorbate-induced faceting.

Payam Kaghazchi1, Timo Jacob, Ivan Ermanoski

  • 1Institut für Elektrochemie, Universität Ulm, Ulm, Germany. payam.kaghazchi@uni-ulm.de

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 14, 2012
PubMed
Summary

Nanoscale pyramids form on iridium surfaces, creating unique structures. This discovery enables the development of advanced catalysts for highly selective reactions.

More Related Videos

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
08:18

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy
11:13

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Published on: August 20, 2018

Related Experiment Videos

Last Updated: May 21, 2026

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
06:14

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Published on: September 11, 2018

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
08:18

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy
11:13

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Published on: August 20, 2018

Area of Science:

  • Surface Science
  • Materials Science
  • Heterogeneous Catalysis

Background:

  • Faceting is a nanoscale self-assembly process where planar surfaces transform into 'hill-and-valley' structures, exposing new low-index facets.
  • Understanding surface reconstructions is crucial for designing efficient catalysts.

Purpose of the Study:

  • To investigate the nanostructure formation on Ir(210) surfaces upon annealing in oxygen.
  • To identify the atomic structure of the resulting nanopyramidal facets and their stability.
  • To explore the potential of this phenomenon for creating novel nanoscale model catalysts.

Main Methods:

  • Utilized scanning tunneling microscopy (STM) to visualize the surface morphology at the nanoscale.
  • Employed density functional theory (DFT) calculations to determine the atomic structure and stability of the observed facets.

Main Results:

  • Annealing Ir(210) in O(2) resulted in the formation of three-sided nanoscale pyramids.
  • These pyramids expose smooth {311} and partially restructured (110) faces.
  • The nanopyramidal structure was identified as a stepped double-missing-row reconstruction, stable only on these facets, not on planar Ir(110).

Conclusions:

  • Faceting enables the stabilization of a previously unstable surface reconstruction on iridium.
  • This provides a novel pathway for preparing nanoscale model catalysts with controlled structures.
  • The findings offer potential for high selectivity and reactivity in heterogeneous (electro-)catalysis studies.