Oxygen-defective graphdiyne for ultra-efficient removal of sulfonylurea herbicides from aqueous solution

文献类型： 外文期刊

第一作者： Zhu, Jianhui

作者： Zhu, Jianhui;Xiang, Sheng;Zhang, Bingjie;Wang, Jianli;Li, Changsheng;Pan, Canping;Xu, Yong;Ma, Yongqiang;Xiang, Sheng

作者机构：

关键词： Graphdiyne; Sulfonylurea herbicides; Adsorption; Modelling; Water purification

期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.968； 五年影响因子：7.317 ）

ISSN： 2213-2929

年卷期： 2022 年 10 卷 3 期

页码：

收录情况： SCI

摘要： The irrational use of sulfonylurea herbicides (SUHs) has brought many environmental problems due to their long-term residue and toxicity on non-target organisms. In this study, oxygen-defective graphdiyne (GDY) was applied as an adsorption material to remove pesticides from water for the first time under various conditions and exhibited remarkable adsorption properties for seven SUHs. The maximum adsorption capacity of GDY reached up to 795.51 mg/g for iodosulfuron-methyl sodium, which was over 130 times higher than that of modified graphene oxide (6 mg/g) and modified biochar (1.5 mg/g) reported by others. Additionally, the pseudo-second order kinetic model and Langmuir isotherm model were well fitted for the experimental data. The thermodynamic results revealed that the adsorption process was physical, spontaneous and endothermic in nature. Further studies verified that 7C-7C interaction, hydrophobic interaction and hydrogen bonding played an important role in SUHs adsorption on GDY. This work clarifies that oxygen-defective GDY is an ultra-efficient, sustainable and anti interference adsorbent for the removal of SUHs from aqueous solution.

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