Low-coordinated platinum material for hydrogenation of m-dinitrobenzene to m-phenylenediamine

Ji, Peiyi; Han, Xinchen; Li, Zonglin; Zhang, Qingxiao; Cheng, Weihua; Sheng, Jie; Fan, Runze; Liao, Qingliang; Zhang, Chenhao; Li, Hui

doi:10.1016/j.apsusc.2023.157782

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…Moreover, the Pt–Pt CNs of Pd 7 @Pt 3 obtained by EXAFS fitting is much lower than that of Pd 7 @Pt 3-U , indicating that Pd 7 @Pt 3 has more unsaturated uncoordinated Pt atoms, which may be ascribed to the uneven surfaces of the Pt hemispherical island. 38 In other words, Pt species with an island structure would possess more unoccupied orbitals, which are expected to provide more active sites to facilitate the electrochemical reactions. 39 Further analysis of the Pt L 3 -edge EXAFS oscillations by wavelet transform (WT) showed that the coordination environments of all the samples were consistent with the R space and the fitting results (Fig.…”

Section: Resultsmentioning

confidence: 99%

Photochemical engineering unsaturated Pt islands on supported Pd nanocrystals for a robust pH-universal hydrogen evolution reaction

Liu,

Yodsin,

et al. 2024

Mater. Horiz.

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Section: Resultsmentioning

confidence: 99%

Photochemical engineering unsaturated Pt islands on supported Pd nanocrystals for a robust pH-universal hydrogen evolution reaction

Liu,

Yodsin,

et al. 2024

Mater. Horiz.

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Hydrogenation of dinitrobenzenes over titania-supported palladium nanoparticles

Shuvalova,

Kirichenko

2024

Mendeleev Communications

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Fully exposed Pt clusters for efficient catalysis of multi-step hydrogenation reactions

Si,

Jiao,

Wang

et al. 2024

Nat Commun

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For di-nitroaromatics hydrogenation, it is a challenge to achieve the multi-step hydrogenation with high activity and selectivity due to the complexity of the process involving two nitro groups. Consequently, many precious metal catalysts suffer from low activity for this multi-step hydrogenation reaction. Herein, we employ a fully exposed Pt clusters catalyst consisting of an average of four Pt atoms on nanodiamond@graphene (Ptn/ND@G), demonstrating excellent catalytic performance for the multi-step hydrogenation of 2,4-dinitrotoluene. The TOF (40647 h−1) of Ptn/ND@G is significantly superior to that of single Pt atoms catalyst, Pt nanoparticles catalyst, and even all the known catalysts. Density functional theory calculations and absorption experiments reveal that the synergetic interaction between the multiple active sites of Ptn/ND@G facilitate the co-adsorption/activation of reactants and H2, as well as the desorption of intermediates/products, which is the key for the higher catalytic activity than single Pt atoms catalyst and Pt nanoparticles catalyst.

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Low-coordinated platinum material for hydrogenation of m-dinitrobenzene to m-phenylenediamine

Cited by 3 publications

References 46 publications

Photochemical engineering unsaturated Pt islands on supported Pd nanocrystals for a robust pH-universal hydrogen evolution reaction

Photochemical engineering unsaturated Pt islands on supported Pd nanocrystals for a robust pH-universal hydrogen evolution reaction

Hydrogenation of dinitrobenzenes over titania-supported palladium nanoparticles

Fully exposed Pt clusters for efficient catalysis of multi-step hydrogenation reactions

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