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Updated: Sep 27, 2025

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
Published on: April 12, 2019
Highly Loaded Independent Pt0 Atoms on Graphdiyne for pH-General Methanol Oxidation Reaction
Lan Hui1,2, Yurui Xue1,3, Chengyu Xing1
1Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Abstract:
The emergence of platinum-based catalysts promotes efficient methanol oxidation reactions (MOR). However, the defects of such noble metal catalysts are high cost, easy poisoning, and limited commercial applications. The efficient utilization of a low-cost, anti-poisoning catalyst has been expected. Here, it is skillfully used N-doped graphdiyne (NGDY) to prepare a zero-valent platinum atomic catalyst (Pt/NGDY), which shows excellent activity, high pH adaptability, and high CO tolerance for MOR. The Pt/NGDY electrocatalysts for MOR with specific activity 154.2 mA cm-2 (1449.3 mA mgPt -1 ), 29 mA cm-2 (296 mA mgPt -1 ) and 22 mA cm-2 (110 mA mgPt -1 ) in alkaline, acid, and neutral solutions. The specific activity of Pt/NGDY is 9 times larger than Pt/C in alkaline solution. Density functional theory (DFT) calculations confirm that the incorporation of electronegativity nitrogen atoms can increase the high coverage of Pt to achieve a unique atomic state, in which the shared contributions of different Pt sites reach the balance between the electroactivity and the stability to guarantee the higher performance of MOR and durability with superior anti-poisoning effect.
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