Functionalization-dependent toxicity of MIL-101 metal-organic frameworks to phytoplankton Chlamydomonas reinhardtii

文献类型： 外文期刊

第一作者： Wang, Meiyu

作者： Wang, Meiyu;Xia, Bin;Cui, Zhengguo;Qu, Keming;Li, Yiling;Wang, Meiyu

作者机构：

关键词： MIL-101 metal organic frameworks; Chlamydomonas reinhardtii; Toxicity; Metabolism

期刊名称：AQUATIC TOXICOLOGY （ 影响因子：4.3； 五年影响因子：4.4 ）

ISSN： 0166-445X

年卷期： 2025 年 285 卷

页码：

收录情况： SCI

摘要： The MIL-101 series metal-organic frameworks have attracted significant attention in water remediation, leading to their inevitable release into the aquatic environments. However, research on the toxic effects of MIL-101 on aquatic organisms is in its infancy, and the responses of freshwater algae to MIL-101 and its amino-functionalized counterpart, MIL-101-NH2, are poorly understood. In this study, the freshwater green algae Chlamydomonas reinhardtii (C. reinhardtii) were exposed to varying concentrations of MIL-101 or MIL-101-NH2 (0.1-50 mg/L) for 7 d The impacts of MIL-101 and MIL-101-NH2 on algal viability and photosynthesis activity were systematically evaluated. Additionally, non-targeted metabolomics was employed to obtain an overview of the physiological status of the algae under MIL-101/MIL-101-NH2 exposure. Exposure to 50 mg/L of MIL-101 or MIL-101-NH2 resulted in reduced algal viability, suppressed photosynthetic activity, and significant metabolic reprogramming. In contrast, low concentrations (0.1 mg/L) of either MIL-101 or MIL-101-NH2 did not induce any detectable physiological alterations. The observed algal toxicity was primarily due to the direct physical interactions with the particles rather than release of metal ions. The divergent metabolic impacts caused by MIL-101/MIL-101-NH2 suggested the contribution of functionalization to MOF's biological outcomes. These findings provide valuable insights into the ecological impacts of MOFs in aquatic ecosystems and reveal the importance of functionalization in MOFs-associated environmental impacts.

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