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Conjugated dual size effect of core-shell particles synergizes bimetallic catalysis

Author

Listed:
  • Xiaohui Zhang

    (University of Science and Technology of China)

  • Zhihu Sun

    (University of Science and Technology of China)

  • Rui Jin

    (University of Science and Technology of China)

  • Chuwei Zhu

    (University of Science and Technology of China)

  • Chuanlin Zhao

    (University of Science and Technology of China)

  • Yue Lin

    (University of Science and Technology of China)

  • Qiaoqiao Guan

    (University of Science and Technology of China)

  • Lina Cao

    (University of Science and Technology of China)

  • Hengwei Wang

    (University of Science and Technology of China)

  • Shang Li

    (University of Science and Technology of China)

  • Hancheng Yu

    (University of Science and Technology of China)

  • Xinyu Liu

    (University of Science and Technology of China)

  • Leilei Wang

    (University of Science and Technology of China)

  • Shiqiang Wei

    (University of Science and Technology of China)

  • Wei-Xue Li

    (University of Science and Technology of China)

  • Junling Lu

    (University of Science and Technology of China)

Abstract

Core-shell bimetallic nanocatalysts have attracted long-standing attention in heterogeneous catalysis. Tailoring both the core size and shell thickness to the dedicated geometrical and electronic properties for high catalytic reactivity is important but challenging. Here, taking Au@Pd core-shell catalysts as an example, we disclose by theory that a large size of Au core with a two monolayer of Pd shell is vital to eliminate undesired lattice contractions and ligand destabilizations for optimum benzyl alcohol adsorption. A set of Au@Pd/SiO2 catalysts with various core sizes and shell thicknesses are precisely fabricated. In the benzyl alcohol oxidation reaction, we find that the activity increases monotonically with the core size but varies nonmontonically with the shell thickness, where a record-high activity is achieved on a Au@Pd catalyst with a large core size of 6.8 nm and a shell thickness of ~2–3 monolayers. These findings highlight the conjugated dual particle size effect in bimetallic catalysis.

Suggested Citation

  • Xiaohui Zhang & Zhihu Sun & Rui Jin & Chuwei Zhu & Chuanlin Zhao & Yue Lin & Qiaoqiao Guan & Lina Cao & Hengwei Wang & Shang Li & Hancheng Yu & Xinyu Liu & Leilei Wang & Shiqiang Wei & Wei-Xue Li & Ju, 2023. "Conjugated dual size effect of core-shell particles synergizes bimetallic catalysis," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36147-2
    DOI: 10.1038/s41467-023-36147-2
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    References listed on IDEAS

    as
    1. Junling Lu & Ke-Bin Low & Yu Lei & Joseph A. Libera & Alan Nicholls & Peter C. Stair & Jeffrey W. Elam, 2014. "Toward atomically-precise synthesis of supported bimetallic nanoparticles using atomic layer deposition," Nature Communications, Nature, vol. 5(1), pages 1-9, May.
    2. Xiaojuan Zhu & Qishui Guo & Yafei Sun & Shangjun Chen & Jian-Qiang Wang & Mengmeng Wu & Wenzhao Fu & Yanqiang Tang & Xuezhi Duan & De Chen & Ying Wan, 2019. "Optimising surface d charge of AuPd nanoalloy catalysts for enhanced catalytic activity," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
    3. Tianou He & Weicong Wang & Fenglei Shi & Xiaolong Yang & Xiang Li & Jianbo Wu & Yadong Yin & Mingshang Jin, 2021. "Mastering the surface strain of platinum catalysts for efficient electrocatalysis," Nature, Nature, vol. 598(7879), pages 76-81, October.
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