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Heterogeneous Catalysis

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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Related Experiment Video

Updated: Apr 6, 2026

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

Lattice-Modulated Bi_0.1Ce_0.9O₂ Enabling Precise Intermediate Adsorption Tuning for H₂O₂ Electrosynthesis.

Xingyu Bai^1,2, Qianwei Chen^1,2, Dongyu Wang^1,2

¹School of Materials and Energy, Southwest University, Chongqing 400715, PR China.

Inorganic Chemistry

|April 4, 2026

Summary

This summary is machine-generated.

This study presents a novel bismuth-doped cerium oxide (Bi_0.1Ce_0.9O₂) catalyst for efficient electrochemical hydrogen peroxide (H₂O₂) production. The catalyst demonstrates high selectivity and yield, offering a sustainable method for on-site H₂O₂ generation.

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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

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Last Updated: Apr 6, 2026

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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Area of Science:

Electrochemistry
Materials Science
Catalysis

Background:

Electrochemical hydrogen peroxide (H₂O₂) production via the two-electron oxygen reduction reaction (2e^- ORR) offers a sustainable and on-site generation strategy.
Developing efficient catalysts is crucial for advancing environmentally friendly H₂O₂ synthesis.

Purpose of the Study:

To synthesize and evaluate a bismuth-doped cerium oxide (Bi_0.1Ce_0.9O₂) catalyst for the 2e^- ORR.
To investigate the effect of Bi doping on the catalytic activity and selectivity for H₂O₂ production.

Main Methods:

One-step hydrothermal in situ self-assembly method for synthesizing Bi_0.1Ce_0.9O₂.
Synchrotron radiation X-ray diffraction (SR-XRD) and theoretical calculations to analyze catalyst structure and active sites.
Electrochemical evaluation of the 2e^- ORR activity, selectivity, yield, and stability.

Main Results:

Bi doping induced lattice expansion and created dual Ce/Bi active sites in CeO₂.
Bi incorporation enhanced O₂ adsorption at Ce sites and weakened *OOH adsorption at Bi sites, promoting the 2e^- ORR.
The Bi_0.1Ce_0.9O₂ catalyst achieved 93.7% H₂O₂ selectivity, a yield of 656 mmol g_cat^-1 h^-1, and 21 h stability.

Conclusions:

Bismuth-doped cerium oxide is a highly effective catalyst for electrochemical H₂O₂ production.
The study provides insights into designing efficient rare-earth oxide catalysts for sustainable H₂O₂ synthesis.
The catalyst's performance in bleaching applications confirms its practical utility.