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Related Concept Videos

Catalysis02:50

Catalysis

26.8K
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.
26.8K
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

438
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
438
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

552
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...
552
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

984
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
984
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

20.7K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.7K
Properties of Transition Metals02:58

Properties of Transition Metals

25.4K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
25.4K

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Updated: Jun 21, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Turning copper into an efficient and stable CO evolution catalyst beyond noble metals.

Jing Xue1,2, Xue Dong3, Chunxiao Liu1

  • 1School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China.

Nature Communications
|July 16, 2024
PubMed
Summary

A novel copper catalyst with antimony and palladium single atoms efficiently converts carbon dioxide (CO2) to carbon monoxide (CO) with 100% selectivity. This sustainable method offers high activity and stability, challenging noble metal catalysts for CO2 electrolysis.

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Area of Science:

  • Electrochemistry
  • Catalysis
  • Materials Science

Background:

  • Converting carbon dioxide (CO2) to carbon monoxide (CO) using renewable electricity is crucial for sustainable chemical synthesis.
  • Achieving high selectivity and activity in CO2-to-CO conversion catalysts remains a significant challenge, often involving a trade-off.

Purpose of the Study:

  • To develop a highly efficient and selective catalyst for CO2 electrolysis to CO.
  • To investigate the role of single-atom alloying in enhancing catalyst performance and stability.

Main Methods:

  • Fabrication of a trimetallic single-atom alloy catalyst (Cu92Sb5Pd3) comprising copper, antimony, and palladium.
  • Electrochemical testing in a neutral electrolyte to evaluate CO2 conversion activity, selectivity, and stability.
  • Operando spectroscopy and theoretical simulations to elucidate the catalytic mechanism and electronic structure modifications.

Main Results:

  • The Cu92Sb5Pd3 catalyst achieved 100% CO selectivity at -402 mA cm-2 and high activity up to -1 A cm-2.
  • Demonstrated long-term stability (>528 h) with over 95% Faradaic efficiency for CO (FE_CO) at -100 mA cm-2.
  • Operando studies confirmed synergistic electronic effects from Sb and Pd single atoms on Cu, enhancing CO production and suppressing hydrogen evolution.

Conclusions:

  • Antimony and palladium single atoms synergistically modify the electronic structure of copper, enabling efficient and selective CO2 electrolysis.
  • The developed catalyst challenges the reliance on noble metals for large-scale CO2-to-CO conversion, offering a sustainable alternative.
  • This work highlights the potential of single-atom alloy design for advanced electrocatalytic applications.