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Updated: Jan 26, 2026
10:57
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
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Structural evolution of atomically dispersed Pt catalysts dictates reactivity.
Leo DeRita1, Joaquin Resasco1, Sheng Dai2
1Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA, USA.
Nature Materials
|April 24, 2019
Summary
Isolated platinum atoms on titanium dioxide nanoparticles exhibit tunable catalytic activity. Environmental conditions dynamically alter platinum
Area of Science:
- Heterogeneous catalysis
- Materials science
- Surface chemistry
Background:
- Isolated single-atom catalysts offer high metal efficiency and unique reactivity.
- Establishing structure-activity relationships for single-atom catalysts is experimentally challenging.
Purpose of the Study:
- To elucidate the relationships between the structure, dynamic environmental response, and catalytic function of isolated platinum atoms on TiO2.
- To develop sinter-resistant catalysts for studying isolated single-atom active sites.
Main Methods:
- Synthesis of sinter-resistant catalysts with isolated Pt atoms on anatase TiO2 nanoparticles.
- In situ atomic-resolution microscopy and spectroscopy.
- First-principles calculations.
Main Results:
- Isolated Pt species adopt diverse local coordination environments and oxidation states.
- These species dynamically evolve in response to varying environmental conditions.
- Local coordination significantly influences chemical reactivity and catalytic performance.
Conclusions:
- The local coordination environment of isolated Pt atoms is crucial for catalytic performance.
- Environmental conditions can be manipulated to control the reactivity of single-atom catalysts.
- This work provides a framework for designing advanced single-atom catalysts.
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