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Catalysis

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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.

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Electrochemistry: Overview

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The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.

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Related Experiment Video

Updated: Nov 8, 2025

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

Catalysis based on ferroelectrics: controllable chemical reaction with boosted efficiency.

Tsz Lok Wan¹, Lei Ge, Yangli Pan

¹School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, 4000, Australia. Liangzhi.kou@qut.edu.au.

|April 23, 2021

Summary

Ferroelectric materials offer a novel solution for catalysis, enhancing efficiency and selectivity by controlling chemical reactions with their unique polarization. This approach promises to overcome limitations in environmental and energy applications.

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Last Updated: Nov 8, 2025

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

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Area of Science:

Materials Science
Chemistry
Catalysis

Background:

Catalysts are crucial for addressing environmental pollution and energy demands but suffer from low efficiency and selectivity.
Recombination of photogenerated electron-hole pairs and reactant back-reactions limit catalyst performance.
Ferroelectric materials present a promising alternative due to intrinsic polarization and tunable properties.

Purpose of the Study:

To review recent advancements in ferroelectric-based catalysis.
To highlight the mechanism of ferroelectric-controlled catalysis.
To discuss future perspectives and research opportunities in this field.

Main Methods:

Literature review of ferroelectric catalysis research.
Analysis of ferroelectric properties influencing catalytic activity.
Discussion of the ferroelectric switch mechanism in catalysis.

Main Results:

Ferroelectric materials enhance light adsorption and catalytic efficiency.
Intrinsic polarization suppresses electron-hole recombination.
The ferroelectric switch offers superior selectivity and controlled catalytic activity.

Conclusions:

Ferroelectric catalysis provides a novel pathway to improve reaction efficiency and selectivity.
Understanding the working mechanism is key to advancing ferroelectric-controlled catalysis.
This field holds significant potential for practical applications in environmental and energy sectors.