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

You might also read

Related Articles

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

Sort by

Same author

Health surveillance representative of koala (Phascolarctos cinereus) distribution in Victoria, Australia.

Australian veterinary journal·2022

Same author

Preoperative assessment of the older patient.

BJA education·2021

Same author

Correction to: Diagnostic efficacy of cone beam computed tomography in paediatric dentistry: a systematic review.

European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry·2020

Same author

Diagnostic efficacy of cone beam computed tomography in paediatric dentistry: a systematic review.

European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry·2019

Same author

Structure of a Superhydrophilic Surface: Wet Chemically Prepared Rutile-TiO<sub>2</sub>(110)(1 × 1).

The journal of physical chemistry. C, Nanomaterials and interfaces·2019

Same author

Choosing an Appropriate Physical Exercise to Reduce Stereotypic Behavior in Children with Autism Spectrum Disorders: A Non-randomized Crossover Study.

Journal of autism and developmental disorders·2017

Same journal

Partial Oxidation of Bio-methane over Nickel Supported on MgO-ZrO<sub>2</sub> Solid Solutions.

Topics in catalysis·2023

Same journal

Kinetic and Computational Studies of CO Oxidation and PROX on Cu/CeO<sub>2</sub> Nanospheres.

Topics in catalysis·2023

Same journal

Mechanistic Study of Tungsten Bipyridyl Tetracarbonyl Electrocatalysts for CO<sub>2</sub> Fixation: Exploring the Roles of Explicit Proton Sources and Substituent Effects.

Topics in catalysis·2023

Same journal

Analysis of the Scale of Global Human Needs and Opportunities for Sustainable Catalytic Technologies.

Topics in catalysis·2023

Same journal

Nanomaterial Constructs for Catalytic Applications in Biomedicine: Nanobiocatalysts and Nanozymes.

Topics in catalysis·2023

Same journal

Role of Nanozymes in Oral Cancer the Road Ahead.

Topics in catalysis·2022

See all related articles

Search research articles

Related Experiment Video

Updated: Dec 29, 2025

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

Creating Excess Electrons at the Anatase TiO₂(101) Surface.

D T Payne^1,2, Y Zhang^1,2, C L Pang^1,2

¹1Department of Chemistry, University College London, London, WC1H 0AJ UK.

Topics in Catalysis

|February 7, 2020

Summary

This summary is machine-generated.

Electron bombardment increases excess electrons on the anatase titanium dioxide (TiO2) surface, enhancing its potential for redox reactions. This study links surface defects to increased electron concentration and proposes a hydroxylated surface structure.

Keywords:

Anatase Defect creation Excess electrons Hydroxyl TiO2 Water

More Related Videos

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

Related Experiment Videos

Last Updated: Dec 29, 2025

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

Area of Science:

Materials Science
Surface Chemistry
Physical Chemistry

Background:

Excess electrons on anatase TiO2(101) surfaces are crucial for redox reactions.
Surface defect concentration directly influences electron availability.

Purpose of the Study:

To investigate the effect of electron bombardment on excess electron concentration at the anatase TiO2(101) surface.
To elucidate the surface species and defect structures responsible for changes in electron concentration.

Main Methods:

Two-photon photoemission spectroscopy (2PPE) with photon energies of 3.10–3.54 eV.
Ultraviolet photoemission spectroscopy (UPS) with photon energies of 21.2 and 40.8 eV.
Analysis of surface defect dynamics and electronic states.

Main Results:

Electron bombardment at room temperature significantly increased excess electron concentration.
Observed UPS spectral features at 8.45 eV, 6.50 eV, and 0.73 eV below the Fermi level.
These features are attributed to hydroxyl molecular orbitals and Ti 3d band gap states, suggesting surface hydroxylation.

Conclusions:

Electron bombardment leads to a hydroxylated anatase TiO2(101) surface with a higher concentration of excess electrons.
This increased electron density enhances the surface's potential for catalytic redox reactions.