Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon

Jiangbo Xi, Hongyu Sun, Zheye Zhang, Xianming Duan, Junwu Xiao, Fei Xiao, Limin Liu*, Shuai Wang

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    The maximized atomic efficiency of supported catalysts is highly desired in heterogeneous catalysis. Therefore, the design and development of active, stable, and atomic metal-based catalysts remains a formidable challenge. To tackle these problems, it is necessary to investigate the interaction between single atoms and supports. Theoretical calculations indicate that the Pd binding strength is higher on graphene/amorphous carbon (AC) than that on graphene or AC substrate. Based on these predictions, we present a facile confined-interface-directed synthesis route for the preparation of single-atom catalysts (SACs) in which Pd atoms are well-dispersed on the interface of double-shelled hollow carbon nanospheres with reduced graphene oxide (RGO) as the inner shell and AC as the outer shell. Owing to the synergetic effect of the RGO/AC confined interface and the atomically dispersed Pd, the as-made RGO@AC/Pd SAC achieves the maximum atomic efficiency (catalytic activity) of Pd species and exhibits an excellent stability in chemical catalysis. This confined-interface-directed synthesis method provides a novel direction to maximize the atomic efficiency, improve the activity, and enhance the stability of metal-based catalysts.
    Original languageEnglish
    JournalApplied Catalysis B: Environmental
    Volume225
    Pages (from-to)291-297
    ISSN0926-3373
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Single-atom catalyst
    • Graphene
    • Amorphous carbon
    • Confined-interface-directed synthesis
    • Chemical catalysis

    Cite this

    Xi, Jiangbo ; Sun, Hongyu ; Zhang, Zheye ; Duan, Xianming ; Xiao, Junwu ; Xiao, Fei ; Liu, Limin ; Wang, Shuai. / Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon. In: Applied Catalysis B: Environmental. 2018 ; Vol. 225. pp. 291-297.
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    title = "Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon",
    abstract = "The maximized atomic efficiency of supported catalysts is highly desired in heterogeneous catalysis. Therefore, the design and development of active, stable, and atomic metal-based catalysts remains a formidable challenge. To tackle these problems, it is necessary to investigate the interaction between single atoms and supports. Theoretical calculations indicate that the Pd binding strength is higher on graphene/amorphous carbon (AC) than that on graphene or AC substrate. Based on these predictions, we present a facile confined-interface-directed synthesis route for the preparation of single-atom catalysts (SACs) in which Pd atoms are well-dispersed on the interface of double-shelled hollow carbon nanospheres with reduced graphene oxide (RGO) as the inner shell and AC as the outer shell. Owing to the synergetic effect of the RGO/AC confined interface and the atomically dispersed Pd, the as-made RGO@AC/Pd SAC achieves the maximum atomic efficiency (catalytic activity) of Pd species and exhibits an excellent stability in chemical catalysis. This confined-interface-directed synthesis method provides a novel direction to maximize the atomic efficiency, improve the activity, and enhance the stability of metal-based catalysts.",
    keywords = "Single-atom catalyst, Graphene, Amorphous carbon, Confined-interface-directed synthesis, Chemical catalysis",
    author = "Jiangbo Xi and Hongyu Sun and Zheye Zhang and Xianming Duan and Junwu Xiao and Fei Xiao and Limin Liu and Shuai Wang",
    year = "2018",
    doi = "10.1016/j.apcatb.2017.11.057",
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    Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon. / Xi, Jiangbo; Sun, Hongyu; Zhang, Zheye ; Duan, Xianming ; Xiao, Junwu; Xiao, Fei; Liu, Limin; Wang, Shuai.

    In: Applied Catalysis B: Environmental, Vol. 225, 2018, p. 291-297.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon

    AU - Xi, Jiangbo

    AU - Sun, Hongyu

    AU - Zhang, Zheye

    AU - Duan, Xianming

    AU - Xiao, Junwu

    AU - Xiao, Fei

    AU - Liu, Limin

    AU - Wang, Shuai

    PY - 2018

    Y1 - 2018

    N2 - The maximized atomic efficiency of supported catalysts is highly desired in heterogeneous catalysis. Therefore, the design and development of active, stable, and atomic metal-based catalysts remains a formidable challenge. To tackle these problems, it is necessary to investigate the interaction between single atoms and supports. Theoretical calculations indicate that the Pd binding strength is higher on graphene/amorphous carbon (AC) than that on graphene or AC substrate. Based on these predictions, we present a facile confined-interface-directed synthesis route for the preparation of single-atom catalysts (SACs) in which Pd atoms are well-dispersed on the interface of double-shelled hollow carbon nanospheres with reduced graphene oxide (RGO) as the inner shell and AC as the outer shell. Owing to the synergetic effect of the RGO/AC confined interface and the atomically dispersed Pd, the as-made RGO@AC/Pd SAC achieves the maximum atomic efficiency (catalytic activity) of Pd species and exhibits an excellent stability in chemical catalysis. This confined-interface-directed synthesis method provides a novel direction to maximize the atomic efficiency, improve the activity, and enhance the stability of metal-based catalysts.

    AB - The maximized atomic efficiency of supported catalysts is highly desired in heterogeneous catalysis. Therefore, the design and development of active, stable, and atomic metal-based catalysts remains a formidable challenge. To tackle these problems, it is necessary to investigate the interaction between single atoms and supports. Theoretical calculations indicate that the Pd binding strength is higher on graphene/amorphous carbon (AC) than that on graphene or AC substrate. Based on these predictions, we present a facile confined-interface-directed synthesis route for the preparation of single-atom catalysts (SACs) in which Pd atoms are well-dispersed on the interface of double-shelled hollow carbon nanospheres with reduced graphene oxide (RGO) as the inner shell and AC as the outer shell. Owing to the synergetic effect of the RGO/AC confined interface and the atomically dispersed Pd, the as-made RGO@AC/Pd SAC achieves the maximum atomic efficiency (catalytic activity) of Pd species and exhibits an excellent stability in chemical catalysis. This confined-interface-directed synthesis method provides a novel direction to maximize the atomic efficiency, improve the activity, and enhance the stability of metal-based catalysts.

    KW - Single-atom catalyst

    KW - Graphene

    KW - Amorphous carbon

    KW - Confined-interface-directed synthesis

    KW - Chemical catalysis

    U2 - 10.1016/j.apcatb.2017.11.057

    DO - 10.1016/j.apcatb.2017.11.057

    M3 - Journal article

    VL - 225

    SP - 291

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    JO - Applied Catalysis B: Environmental

    JF - Applied Catalysis B: Environmental

    SN - 0926-3373

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