One step synthesis of a novel Co-doped UiO-66 adsorbent for superior adsorption of organic dyes from wastewater

Dawei Lan, Huiwen Zhu, Jianwen Zhang, Fan Wang, Yueying Zheng, Zeyu Guo, Gang Yang, Mengxia Xu, Tao Wu

Research output: Journal PublicationArticlepeer-review


Metal-organic frameworks (MOFs) is a promising material that can be used in many fields, including environmental remediation. In this work, a novel adsorbent was successfully prepared by doping the Co element into the framework of UiO-66 with an in-situ oil bath synthesis. This modification ensured that the materials retained relatively good crystallinity. The Co-doping process had a major impact on the particle size and morphology of the original MOFs. The CoUiO-2 exhibited larger surface area and pore size than pristine UiO-66. Accordingly, the maximum adsorption amount of malachite green (MG) on CoUiO-2 (628.93 mg/g) was significantly larger compared with UiO-66 (343.64 mg/g), which was due to more active adsorption sites. In addition, the CoUiO-2 also showed a superior adsorption capacity on rhodamine B (RhB) (1106.22 mg/g). The adsorption process was well described by both the pseudo-second order and Langmuir models, indicating it was dominated by chemisorption and the adsorbent had a homogeneous surface area for adsorption. Therefore, the CoUiO-2 material could be a promising adsorbent for wastewater treatment. This work can provide an important insight into the modification of MOF materials and identify further opportunities to promote the adsorption performance in environmental remediation.

Original languageEnglish
Pages (from-to)1058-1068
Number of pages11
JournalProcess Safety and Environmental Protection
Publication statusPublished - Aug 2024


  • Adsorption
  • Metal-doping modification
  • Metal-organic frameworks (MOFs)
  • UiO-66
  • Wastewater treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • General Chemical Engineering
  • Safety, Risk, Reliability and Quality


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