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A Theoretical Study of the Interactions between Persistent Organic Pollutants and Graphene Oxide

Author

Listed:
  • Qiuxuan Wu

    (School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
    These authors contributed equally to this work.)

  • Rui Zhang

    (School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
    These authors contributed equally to this work.)

  • Xiaoxiang Wang

    (Carbon Neutralization Technology Research Institute, Shenzhen Polytechnic, Shenzhen 518055, China)

  • Yizhuo Li

    (Shenzhen Foreign Languages School, Shenzhen 518053, China)

Abstract

Persistent organic pollutants (POPs) have adverse effects on the human health and ecosystem functioning. Graphene oxide (GO) has been developed to remove trace levels of POPs from wastewater samples. However, many questions involved in these processes are still unresolved (e.g., the role of π–π interaction, the effect of GO on the degradation of POPs, and so on). Revealing the microscopic interactions between GO and POPs is of benefit to resolve these questions. In the present study, a quantum chemical calculation was used to calculate the molecular doping and adsorption energy between eight representative POPs and GO. The influences of GO on the thermodynamic parameters, such as the Gibbs free energy and the highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap, were also reported. We found the molecular doping is dependent on the species of POPs. The adsorption energy of the majority of POPs on GO is between 7 and 8 kJ/mol. Consequently, the GO may make degradation of POPs in wastewater more productive and lead to a change of kinetics of the degradation of POPs.

Suggested Citation

  • Qiuxuan Wu & Rui Zhang & Xiaoxiang Wang & Yizhuo Li, 2022. "A Theoretical Study of the Interactions between Persistent Organic Pollutants and Graphene Oxide," IJERPH, MDPI, vol. 19(18), pages 1-11, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:18:p:11340-:d:910810
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    References listed on IDEAS

    as
    1. Krzysztof Piaskowski & Paweł K. Zarzycki, 2020. "Carbon-Based Nanomaterials as Promising Material for Wastewater Treatment Processes," IJERPH, MDPI, vol. 17(16), pages 1-14, August.
    2. Hye Ah Lee & Su Hyun Park & Young Sun Hong & Eun Hee Ha & Hyesook Park, 2016. "The Effect of Exposure to Persistent Organic Pollutants on Metabolic Health among KOREAN Children during a 1-Year Follow-Up," IJERPH, MDPI, vol. 13(3), pages 1-11, February.
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