Fully exposed Pt clusters for efficient catalysis of multi-step hydrogenation reactions
Yang Si1,2, Yueyue Jiao3,4,5, Maolin Wang6
1School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, PR China.
Nature Communications
|June 7, 2024
Summary
Fully exposed platinum clusters (Ptn) on nanodiamond@graphene efficiently catalyze the multi-step hydrogenation of di-nitroaromatics. This novel catalyst (Ptn/ND@G) exhibits superior activity compared to other platinum catalysts.
Area of Science:
- Catalysis
- Materials Science
- Nanotechnology
Background:
- Multi-step hydrogenation of di-nitroaromatics presents significant challenges in achieving high activity and selectivity.
- Precious metal catalysts often exhibit limited performance in these complex reactions due to the presence of two nitro groups.
Purpose of the Study:
- To develop a highly active and selective catalyst for the multi-step hydrogenation of 2,4-dinitrotoluene.
- To investigate the catalytic performance of fully exposed platinum clusters on a nanodiamond@graphene support.
Main Methods:
- Synthesis of platinum clusters (Ptn) supported on nanodiamond@graphene (Ptn/ND@G).
- Evaluation of catalytic performance in the hydrogenation of 2,4-dinitrotoluene.
- Utilizing density functional theory calculations and absorption experiments to understand reaction mechanisms.
Main Results:
- Ptn/ND@G demonstrated exceptional catalytic performance with a turnover frequency (TOF) of 40647 h-1.
- The catalyst significantly outperformed single Pt atoms, Pt nanoparticles, and previously reported catalysts.
- Synergistic interactions within Ptn/ND@G facilitate reactant/H2 co-adsorption/activation and product desorption.
Conclusions:
- Fully exposed Pt clusters on nanodiamond@graphene offer a promising strategy for efficient di-nitroaromatics hydrogenation.
- The unique structure and electronic properties of Ptn/ND@G are key to its enhanced catalytic activity.
- This study provides insights into catalyst design for complex multi-step hydrogenation reactions.
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