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

Predicting Molecular Geometry02:27

Predicting Molecular Geometry

34.6K
VSEPR Theory for Determination of Electron Pair Geometries
34.6K
Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

2.9K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
2.9K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

43.2K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
43.2K
Valence Bond Theory02:42

Valence Bond Theory

8.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.9K
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.5K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.5K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

41.8K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
41.8K

You might also read

Related Articles

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

Sort by
Same author

Effects of metal components in PM<sub>2.5</sub> derived from pig farm exposure on ovarian function and oocyte quality.

Journal of hazardous materials·2026
Same author

Unveiling the correlation between high-entropy alloy element systems and electrocatalytic activity.

National science review·2026
Same author

Epidemiological Trends and Shared Molecular Signatures of Pancreatic Ductal Adenocarcinoma and Diabetes: An Integrative Analysis Based on Global Burden of Disease and Gene Expression Omnibus Datasets.

Journal of Cancer·2026
Same author

Amide proton transfer-weighted magnetic resonance imaging for predicting histopathology and biomarkers in rectal adenocarcinoma.

Quantitative imaging in medicine and surgery·2026
Same author

Vemurafenib Induces Apoptosis via JNK Activation and AKT Inhibition in Hepatocellular Carcinoma.

Journal of Cancer·2026
Same author

A MXene Colloid Electrolyte With Spatiotemporally Continuous Ion Transport for Fast-Charging Lithium Metal Batteries.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Intrinsic Superconducting Gap in Bilayer KCa<sub>2</sub>Fe<sub>4</sub>As<sub>4</sub>F<sub>2</sub> and Decoupled Monolayer FeAs.

Nano letters·2026
Same journal

Programmable Hydrogen-Assisted Chemical Vapor Deposition Growth and Bipolar Transport in Two-Dimensional MoO<sub>2</sub> Nanoflakes.

Nano letters·2026
Same journal

A Curvature-Modulated Strategy for Single-Atom Catalysts toward Reciprocal Regulation in Li-S Batteries.

Nano letters·2026
Same journal

Vacuum Pyrolysis Engineered CoSb/C Scaffold for Sodium Metal Anodes with Sodiophilic and Superionic Interphase.

Nano letters·2026
Same journal

Hexagonal SiGe Quantum Dots in Nanowires.

Nano letters·2026
Same journal

Monolithic Axial InGaAs Quantum Dot Emitters in GaAs-Based Nanowires via Sb-Mediated Facet Engineering.

Nano letters·2026
See all related articles

Related Experiment Video

Updated: Jul 27, 2025

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures
09:16

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures

Published on: November 7, 2016

10.9K

Amorphous TiO

Longhai Zhang1, Jiaxi Zhang1, Weiquan Tan1

  • 1The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China.

Nano Letters
|June 5, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel Pt3Ti-TiOx/Ketjen black nanocatalyst for fuel cells. This catalyst enhances methanol oxidation reaction performance and stability by coupling intermetallics with amorphous titanium oxide species.

Keywords:
Methanol oxidation reactionTiOxdurabilityintermetallic Pt3Tistrong metal-oxide interaction

More Related Videos

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
12:30

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

9.1K
Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

9.1K

Related Experiment Videos

Last Updated: Jul 27, 2025

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures
09:16

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures

Published on: November 7, 2016

10.9K
Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
12:30

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

9.1K
Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

9.1K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Intermetallic compounds are promising electrocatalysts for fuel cells due to their ordered structures.
  • Challenges exist in synthesizing Pt-based intermetallics and stabilizing nanoparticles during electrocatalysis.

Purpose of the Study:

  • To develop a stable and highly active electrocatalyst for fuel cells.
  • To improve the synthesis and performance of Pt-based intermetallic nanocatalysts.

Main Methods:

  • Synthesis of Ketjen black supported intermetallic Pt3Ti nanocatalyst coupled with amorphous TiOx species (Pt3Ti-TiOx/KB).
  • Investigation of the role of TiOx in nanoparticle confinement and water dissociation.
  • Electrocatalytic testing for methanol oxidation reaction (MOR) and durability assessment.

Main Results:

  • The Pt3Ti-TiOx/KB catalyst exhibited significantly enhanced mass activity (2.15 A mgPt-1) for MOR compared to Pt3Ti/KB and Pt/C.
  • The amorphous TiOx species confined Pt3Ti nanoparticles, improving stability.
  • High mass activity retention of approximately 71% was observed after the durability test.

Conclusions:

  • Coupling Pt-based intermetallics with functional oxides is an effective strategy for developing high-performance electrocatalysts.
  • The Pt3Ti-TiOx/KB catalyst demonstrates superior activity and stability for methanol oxidation.
  • This approach offers a promising pathway for advanced fuel cell catalyst design.