Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Analyte Adsorption and Distribution

Analyte Adsorption and Distribution

In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...

What are Proteins?

What are Proteins?

Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.

You might also read

Related Articles

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

Sort by

Same author

Basic Science and Pathogenesis.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025

Same author

Basic Science and Pathogenesis.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025

Same author

Basic Science and Pathogenesis.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025

Same author

Generation of 3D Human iPSC-Derived Multi-Cell Type Neurospheres for Studying Neuron, Astrocyte, and Microglia Crosstalk.

Bio-protocol·2025

Same author

White matter interactome in vascular dementia.

Cell research·2025

Same author

Geometrical constraints dictate assembly and phenotype of human iPSC-derived motoneuronal spheroids.

Stem cell research & therapy·2025

Same journal

Revisiting crossed-correlated baths in open quantum systems simulated by HEOM or T-TEDOPA.

The Journal of chemical physics·2026

Same journal

Vesicle size and membrane composition control monomer transfer pathways in multicomponent lipid vesicles.

The Journal of chemical physics·2026

Same journal

Polaron-mediated exciton dynamics of P(NDI2OD-T2) unveiled by transient absorption spectroscopy under electrochemical conditions.

The Journal of chemical physics·2026

Same journal

Green-Kubo relation in a mesoscale odd fluid model.

The Journal of chemical physics·2026

Same journal

Nitrogenation of microscopic MoS2 surfaces by oxidation scanning probe lithography.

The Journal of chemical physics·2026

Same journal

Molecular structure, binding, and disorder in TDBC-Ag plexcitonic assemblies.

The Journal of chemical physics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Feb 12, 2026

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Published on: October 18, 2017

NH₃ adsorption on anatase-TiO₂(101).

Stig Koust¹, Kræn C Adamsen¹, Esben Leonhard Kolsbjerg¹

¹Interdisciplinary Nanoscience Center (iNANO) , Aarhus University, DK-8000 Aarhus C, Denmark.

The Journal of Chemical Physics

|April 2, 2018

Summary

This summary is machine-generated.

Ammonia non-dissociatively adsorbs on titanium dioxide (TiO₂) surfaces at specific sites. Adsorption energy decreases with increasing ammonia coverage due to repulsive interactions between molecules.

More Related Videos

Spore Adsorption as a Nonrecombinant Display System for Enzymes and Antigens

Spore Adsorption as a Nonrecombinant Display System for Enzymes and Antigens

Published on: March 19, 2019

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Published on: April 11, 2020

Related Experiment Videos

Last Updated: Feb 12, 2026

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Published on: October 18, 2017

Spore Adsorption as a Nonrecombinant Display System for Enzymes and Antigens

Spore Adsorption as a Nonrecombinant Display System for Enzymes and Antigens

Published on: March 19, 2019

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Published on: April 11, 2020

Area of Science:

Surface Science
Materials Chemistry
Catalysis

Background:

Ammonia adsorption on anatase titanium dioxide (TiO₂) is crucial for TiO₂ catalytic applications.
Understanding acid-base interactions on TiO₂ surfaces is essential for catalysis.

Purpose of the Study:

To identify the adsorption mode of ammonia on the anatase TiO₂(101) surface.
To quantify the adsorption strength and interactions at various coverages.

Main Methods:

High-resolution scanning tunneling microscopy (STM).
Synchrotron X-ray photoelectron spectroscopy (XPS).
Temperature-programmed desorption (TPD).
Density functional theory (DFT) calculations.

Main Results:

Ammonia (NH₃) adsorbs non-dissociatively on five-fold coordinated titanium sites (5f-Ti).
Isolated ammonia exhibits an exothermic adsorption energy of 1.2 eV.
Repulsive intermolecular interactions reduce adsorption energy at higher coverages, quantified by DFT and STM.

Conclusions:

Ammonia adsorption on anatase TiO₂(101) is primarily governed by 5f-Ti sites.
Adsorbate-adsorbate repulsion significantly impacts binding energy, especially at monolayer coverage.
Findings align with experimental TPD data, validating the adsorption model.