Related Experiment Video
Updated: Aug 5, 2026
10:57
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Electrocatalytic Oxyanion Reduction: From Fundamental Principles to Rational Catalyst Design
Yuhan Liu1, Chengyan Gong1, Chao Yuan1
1College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, Hunan, China.
Topics in Current Chemistry (Cham)
|July 27, 2026
Summary
Electrochemical reduction of oxyanions offers sustainable solutions for environmental cleanup and chemical production. This review details catalyst design and mechanisms for efficient oxyanion conversion, paving the way for advanced electrocatalytic platforms.
Area of Science:
- Electrochemistry
- Environmental Science
- Materials Science
Background:
- Electrochemical reduction of oxyanions is crucial for environmental remediation and synthesizing valuable chemical feedstocks.
- Oxyanions like nitrate, (bi)carbonate, bromate, perchlorate, (bi)chromate, and selenate/selenite pose environmental challenges and represent potential resources.
Purpose of the Study:
- To provide a comprehensive review of electrocatalytic oxyanion conversion.
- To highlight catalyst progress, mechanistic features, and strategies for enhanced activity, selectivity, and stability.
- To establish a mechanistic framework for developing next-generation electrocatalysts.
Main Methods:
- Analysis of electrocatalytic conversion of various oxyanions.
- Evaluation of catalyst design principles and engineering approaches.
- Discussion of mechanistic insights into multi-electron/proton transfer, intermediate adsorption, and side reactions.
Main Results:
- Progress in electrocatalyst development for oxyanion reduction.
- Understanding of key mechanistic features governing reaction pathways.
- Strategies for enhancing catalyst activity, selectivity, and stability are detailed.
- Engineering approaches to boost intrinsic and apparent activity are systematically evaluated.
Conclusions:
- Mechanistic understanding is vital for rational catalyst design.
- Optimizing adsorption energies and inhibiting side reactions are key for selectivity.
- Addressing long-term stability is critical for practical applications.
- Future directions focus on high-current-density electrocatalysts for sustainable conversion.
Related Concept Videos
01:19Oxidation and Reduction of Organic Molecules
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
The removal of an electron from a molecule, results in a...
01:23Redox Equilibria: Overview
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
01:30Processes at Electrodes
The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
01:04Electrochemistry: Overview
Electrochemistry is the branch of chemistry that studies the relationship between electrical quantities and chemical reactions, particularly oxidation and reduction. Oxidation is the loss of electrons from a substance, whereas reduction refers to the gain of electrons. A substance with a strong electron affinity is called an oxidizing agent (oxidant), and a reducing agent (reductant) is a species that donates electrons. Oxidation and reduction processes are pivotal to electrochemical reactions,...
02:58Balancing Redox Equations
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...