Amino-Modified ZIF-90 for Effective Adsorption of Au(III) in Environmental Water
In this work, amino-modified ZIF-90 (NH<sub>2</sub>-ZIF-90) was prepared by using butylamine as a modifier, and its effectiveness in adsorbing Au(III) from environmental samples was investigated. The morphology and structure of NH<sub>2</sub>-ZIF-90 were analyzed via SEM, XRD, FT-IR, and XPS. Optimal adsorption occurred after 12 h of shaking in a pH = 5 aqueous solution with 2 mg mL<sup>-1</sup> NH<sub>2</sub>-ZIF-90. The adsorption kinetics conformed to a pseudo-second-order model, and the equilibrium data fit the Freundlich isotherm model well. Finally, NH<sub>2</sub>-ZIF-90 was successfully used in lake water and tap water samples for Au(III) adsorption, with recovery rates ranging from 81.0% to 93.3%. This study presents a novel approach for addressing Au(III) adsorption challenges.
Authors
- Xueli Wu (ORCID: https://orcid.org/0000-0002-6887-2556)
- Shaoxia Wang
- Jianfei Qu
- Xuming Zhuang (ORCID: https://orcid.org/0000-0002-8466-5071)
- Chuanlei Luan
- Yang Tan (ORCID: https://orcid.org/0000-0001-6865-2572)
- Xiuli Yin (ORCID: https://orcid.org/0000-0003-2828-6613)
- Xuran Wu (ORCID: https://orcid.org/0000-0002-5921-309X)
- N. Zhou (ORCID: https://orcid.org/0000-0002-1775-2511)
Institutions
- Yantai University (CN)
- Chinese Academy of Sciences (CN)
- Yantai Institute of Coastal Zone Research (CN)
Publication Details
- Journal
- Molecules
- Published
- 2025-04-18
- DOI
- https://doi.org/10.3390/molecules30081826
- Citations
- 2
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.07
Funders
- Natural Science Foundation of Shandong Province