Related Experiment Video
Updated: May 1, 2026
06:35
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
7.5K
Pt Atomic Chain: Local Asymmetry One-Dimensional Array for Enhanced Electrochemical Reactions
Tianshu Chu1,2,3, Shuang Zhu4, Xuanning Zhang1,2,3
1Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, China.
Advanced Materials (Deerfield Beach, Fla.)
|April 30, 2026
Summary
Researchers developed a novel asymmetric platinum atomic chain (Pt AC) catalyst. This catalyst exhibits significantly enhanced hydrogen evolution reaction (HER) activity and superior dopamine sensing performance compared to traditional catalysts.
Area of Science:
- Materials Science
- Catalysis
- Nanotechnology
Background:
- Atomically dispersed arrays boost catalysis via synergistic effects.
- Uneven charge distribution in arrays hinders local asymmetric structures, limiting complex reaction efficiency.
Purpose of the Study:
- To engineer an atomically dispersed array with local asymmetry for improved chemical reactions.
- To investigate the catalytic and sensing performance of the novel asymmetric structure.
Main Methods:
- Created ordered in-plane vacancies in Mo1.33C surface.
- Promoted in situ substitution of Mo by Pt atoms to form Pt atomic chains (Pt AC).
- Evaluated hydrogen evolution reaction (HER) activity and dopamine (DA) sensing performance.
Main Results:
- Synthesized a locally asymmetric 1D sawtooth-shaped Pt atomic chain (Pt AC).
- Pt AC demonstrated superior HER activity (12.52 A mgPt−1) compared to Pt single atoms (Pt SA) and commercial Pt/C.
- Pt AC exhibited significantly higher sensitivity for dopamine detection compared to Pt SA.
Conclusions:
- The asymmetric structure of Pt AC reduces energy barriers for hydrolysis and intermediate adsorption, enhancing HER activity.
- The unique sites in Pt AC facilitate dopamine adsorption and oxidation, leading to high sensing performance.
- This work provides a new strategy for designing atomically dispersed arrays with asymmetric structures for surface chemistry applications.
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