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Facet effect of hematite on the hydrolysis of phthalate esters under ambient humidity conditions

Author

Listed:
  • Xin Jin

    (Nanjing University)

  • Dingding Wu

    (Nanjing University)

  • Cun Liu

    (Chinese Academy of Sciences)

  • Shuhan Huang

    (Nanjing University)

  • Ziyan Zhou

    (Nanjing University)

  • Hao Wu

    (Nanjing University)

  • Xiru Chen

    (Nanjing University)

  • Meiying Huang

    (Chinese Academy of Sciences)

  • Shaoda Zhou

    (Nanjing Kaver Scientific Instrument Co. Ltd.)

  • Cheng Gu

    (Nanjing University)

Abstract

Phthalate esters (PAEs) have been extensively used as additives in plastics and wallcovering, causing severe environmental contamination and increasing public health concerns. Here, we find that hematite nanoparticles with specific facet-control can efficiently catalyze PAEs hydrolysis under ambient humidity conditions, with the hydrolysis rates 2 orders of magnitude higher than that in water saturated condition. The catalytic performance of hematite shows a significant facet-dependence with the reactivity in the order {012} > {104} ≫ {001}, related to the atomic array of surface undercoordinated Fe. The {012} and {104} facets with the proper neighboring Fe-Fe distance of 0.34-0.39 nm can bidentately coordinate with PAEs, and thus induce much stronger Lewis-acid catalysis. Our study may inspire the development of nanomaterials with appropriate surface atomic arrays, improves our understanding for the natural transformation of PAEs under low humidity environment, and provides a promising approach to remediate/purify the ambient air contaminated by PAEs.

Suggested Citation

  • Xin Jin & Dingding Wu & Cun Liu & Shuhan Huang & Ziyan Zhou & Hao Wu & Xiru Chen & Meiying Huang & Shaoda Zhou & Cheng Gu, 2022. "Facet effect of hematite on the hydrolysis of phthalate esters under ambient humidity conditions," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33950-1
    DOI: 10.1038/s41467-022-33950-1
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    1. Zdenek Jakub & Matthias Meier & Florian Kraushofer & Jan Balajka & Jiri Pavelec & Michael Schmid & Cesare Franchini & Ulrike Diebold & Gareth S. Parkinson, 2021. "Rapid oxygen exchange between hematite and water vapor," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
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