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Catalysis

Catalysis

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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Related Experiment Video

Updated: May 8, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area

Published on: February 19, 2018

Promoting CO₂ Electroreduction Over ion-exchange Resin-derived Ni-N-C Catalyst with Sulfur Doping.

Yicheng Wang^1,2, Qiyu Zhang¹, Chenxu Wang¹

¹School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.

Chemistry, an Asian Journal

|November 27, 2024

Summary

This study introduces a sulfur-doped single-atom catalyst for efficient electrocatalytic carbon dioxide reduction (CO2RR). The novel catalyst converts CO2 to CO with high efficiency, offering a sustainable energy solution.

Keywords:

Electrocatalytic CO2 reduction Nickel Porous carbon Single-atom catalyst Sulfur doping

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Published on: December 6, 2021

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Last Updated: May 8, 2026

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Published on: February 19, 2018

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Area of Science:

Materials Science
Electrochemistry
Catalysis

Background:

Electrocatalytic carbon dioxide reduction (CO2RR) is key for sustainable carbon conversion using renewable energy.
Single-atom catalysts (SACs) with transition metal-nitrogen-carbon (M-N-C) structures show high atom efficiency for CO2RR.
Optimizing SACs requires careful selection of carbon sources, supports, and microenvironment modulation.

Purpose of the Study:

To develop and investigate a sulfur-doped Ni-N-C single-atom catalyst for enhanced CO2RR.
To explore the role of sulfur doping and the carbon support in catalytic performance.
To understand the mechanism of improved CO2RR through theoretical calculations.

Main Methods:

A two-step synthesis involving metal ion adsorption and thermal decomposition.
Utilizing porous ion exchange resin as a carbon source and support.
Electrochemical characterization and theoretical calculations (DFT).

Main Results:

The sulfur-doped Ni-N-C catalyst achieved over 90% Faradaic efficiency for CO2 to CO conversion.
Maximum Faradaic efficiency reached 97.7% at -0.79 V vs. RHE.
Theoretical calculations confirmed sulfur doping facilitates proton-electron transfer and lowers energy barriers.

Conclusions:

The developed sulfur-doped Ni-N-C catalyst demonstrates excellent performance for CO2RR.
Porous ion exchange resin is an effective carbon support for SACs.
Sulfur doping significantly enhances the catalytic activity by optimizing the electronic structure and reaction pathway.