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Elucidating the catalytic mechanism of Prussian blue nanozymes with self-increasing catalytic activity

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Listed:
  • Kaizheng Feng

    (Southeast University)

  • Zhenzhen Wang

    (National Center for Nanoscience and Technology of China)

  • Shi Wang

    (Southeast University)

  • Guancheng Wang

    (Southeast University)

  • Haijiao Dong

    (Nanjing Institute of Measurement and Testing Technology)

  • Hongliang He

    (Southeast University)

  • Haoan Wu

    (Southeast University)

  • Ming Ma

    (Southeast University)

  • Xingfa Gao

    (National Center for Nanoscience and Technology of China)

  • Yu Zhang

    (Southeast University)

Abstract

Although Prussian blue nanozymes (PBNZ) are widely applied in various fields, their catalytic mechanisms remain elusive. Here, we investigate the long-term catalytic performance of PBNZ as peroxidase (POD) and catalase (CAT) mimetics to elucidate their lifespan and underlying mechanisms. Unlike our previously reported Fe3O4 nanozymes, which exhibit depletable POD-like activity, the POD and CAT-like activities of PBNZ not only persist but slightly enhance over prolonged catalysis. We demonstrate that the irreversible oxidation of PBNZ significantly promotes catalysis, leading to self-increasing catalytic activities. The catalytic process of the pre-oxidized PBNZ can be initiated through either the conduction band pathway or the valence band pathway. In summary, we reveal that PBNZ follows a dual-path electron transfer mechanism during the POD and CAT-like catalysis, offering the advantage of a long service life.

Suggested Citation

  • Kaizheng Feng & Zhenzhen Wang & Shi Wang & Guancheng Wang & Haijiao Dong & Hongliang He & Haoan Wu & Ming Ma & Xingfa Gao & Yu Zhang, 2024. "Elucidating the catalytic mechanism of Prussian blue nanozymes with self-increasing catalytic activity," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50344-7
    DOI: 10.1038/s41467-024-50344-7
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    References listed on IDEAS

    as
    1. Wenhui Gao & Jiuyang He & Lei Chen & Xiangqin Meng & Yana Ma & Liangliang Cheng & Kangsheng Tu & Xingfa Gao & Cui Liu & Mingzhen Zhang & Kelong Fan & Dai-Wen Pang & Xiyun Yan, 2023. "Deciphering the catalytic mechanism of superoxide dismutase activity of carbon dot nanozyme," Nature Communications, Nature, vol. 14(1), pages 1-15, December.
    2. Xiaoyu Wang & Xuejiao J. Gao & Li Qin & Changda Wang & Li Song & Yong-Ning Zhou & Guoyin Zhu & Wen Cao & Shichao Lin & Liqi Zhou & Kang Wang & Huigang Zhang & Zhong Jin & Peng Wang & Xingfa Gao & Hui , 2019. "eg occupancy as an effective descriptor for the catalytic activity of perovskite oxide-based peroxidase mimics," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    3. Haijiao Dong & Wei Du & Jian Dong & Renchao Che & Fei Kong & Wenlong Cheng & Ming Ma & Ning Gu & Yu Zhang, 2022. "Depletable peroxidase-like activity of Fe3O4 nanozymes accompanied with separate migration of electrons and iron ions," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    4. Zhenzhen Wang & Jiangjiexing Wu & Jia-Jia Zheng & Xiaomei Shen & Liang Yan & Hui Wei & Xingfa Gao & Yuliang Zhao, 2021. "Accelerated discovery of superoxide-dismutase nanozymes via high-throughput computational screening," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
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