Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

  • Bozhen Li
    Bozhen Li
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    More by Bozhen Li
  • Yiming Li
    Yiming Li
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    More by Yiming Li
  • Jiarui Ren
    Jiarui Ren
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    More by Jiarui Ren
  • Fengli Dai
    Fengli Dai
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    More by Fengli Dai
  • Yaping Zhang
    Yaping Zhang
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    More by Yaping Zhang
  • Yufeng He*
    Yufeng He
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    *Email: [email protected]
    More by Yufeng He
  • Pengfei Song
    Pengfei Song
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    More by Pengfei Song
  • , and 
  • Rongmin Wang*
    Rongmin Wang
    Key Laboratory of Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
    *Email: [email protected]
    More by Rongmin Wang
Cite this: ACS Appl. Nano Mater. 2021, 4, 9, 9370–9381
Publication Date (Web):September 7, 2021
https://doi.org/10.1021/acsanm.1c01839
Copyright © 2021 American Chemical Society
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Abstract

Hydroxyapatite (HA), as a kind of biocompatible inorganic material, is rich in hydroxyl groups on the surface and can easily undergo ion exchange reactions with metal ions. In this study, using HA nanowires (HAnW) as eco-friendly carriers and promoters, a HAnW-based heterojunction ([email protected]), in which HA was coated by the cobalt-based metal–organic framework (Co-MOF), was synthesized by a simple in situ growth method and ion exchange method. Then, using [email protected] to activate peroxymonosulfate, some typical organic pollutants including antibiotics and dyes, such as tetracycline (TC), malachite green, crystal violet, methylene blue, and rhodamine B, were excellently degraded. The removal rate of TC was 86% within 0.5 min and 97% within 15 min. It could also be reused for 10 times with the removal rate of TC being 95%. The catalytic mechanism was investigated with detecting reactive substances, including 1O2, O2OH, and SO4–•. We considered the formation of Co–OH+ in the heterojunction of [email protected], as there are a lot of −OH in HAnW, which fixed Co2+ of Co-MOF. In summary, it provided an eco-friendly HA-based catalyst for effective and quick degradation of organic pollutants.

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The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsanm.1c01839.

  • Macro photograph of the materials; SEM, XRD, FTIR, EDS, and XPS of the material after degradation; element content comparison; influence of catalyst dosage, concentration, PMS dosage, temperature, pH, and anion; cobalt ion identification experiment; free radical quenching experiment; physical mixture degradation experiment; and macro degradation photograph (PDF)

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