Abstract The World Health Organization (WHO) has recommended the fluoride level in drinking water (1.5 mg/L) and defluoridation of water is an essential to remove of fluoride from contaminated water. Hence, the effective and rapid adsorbent Cuprous oxide-reduced graphene oxide (Cu2O-RGO) composite was developed to overwhelm this concern. Sonochemical approach was adopted for the synthesis of desirable composite which was further characterized by XRD, FTIR, SEM, and EDS. The optimized composite (30 mg) shown the significant adsorption capacity of 34 mg/g of F− solution (pH = 9), 70% removal of F− solution from real experiment and Freundlich model was fitted than Langmuir and Temkin isotherms. The experimental results corroborate that adsorbent is the most effective for removal of fluoride from its polluted water.

中文翻译：

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氧化亚铜修饰还原氧化石墨烯在水溶液中的除氟

摘要 世界卫生组织 (WHO) 已建议饮用水中的氟化物含量为 1.5 毫克/升，而水的除氟是去除受污染水中氟化物的必要条件。因此，开发了有效且快速的吸附剂氧化亚铜还原氧化石墨烯（Cu2O-RGO）复合材料来克服这一问题。采用声化学方法合成所需的复合材料，并通过 XRD、FTIR、SEM 和 EDS 进一步表征。优化的复合材料 (30 mg) 显示出 34 mg/g F-溶液 (pH = 9) 的显着吸附能力，真实实验中 F-溶液的去除率为 70%，Freundlich 模型比 Langmuir 和 Temkin 等温线拟合。实验结果证实，吸附剂对于从污染水中去除氟化物是最有效的。