吸附异温和Pb的动力学 (ii) 用生物性金属氧化物纳米粒子从水溶液中去除离子
Anastassiya A Mashentseva1,2, Nurzhigit Seitzhapar1,2, Murat Barsbay3
1The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan a.mashentseva@inp.kz.
RSC advances
|September 11, 2023
概括
这项研究表明,使用Serratula coronata植物提取物制成的氧化 (ZnO) 和氧化铜 (CuO) 纳米颗粒有效地从水中去除 (II) 离子. 这些纳米粒子表现出高吸能力,用于去除.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- (Pb2+) 离子对环境和健康构成重大风险.
- 开发有效和可持续的重金属修复方法至关重要.
- 植物介导的纳米颗粒合成为污染物清除提供了一种环保的方法.
研究的目的:
- 使用Serratula coronata植物提取物合成氧化 (ZnO) 和氧化铜 (CuO) 纳米粒子.
- 为了研究这些纳米颗粒的吸附性能,以去除的离子.
- 分析植物采集时间对多含量的影响,并优化合成条件.
主要方法:
- 通过使用Serratula coronata植物提取物,通过湿燃法合成纳米粒子.
- 使用扫描电子显微镜 (SEM),能量分散分析 (EDAX),X射线相位分析 (XRD) 和X射线光电子谱学 (XPS) 的表征.
- 吸附实验以评估的离子去除效率,动力学 (伪二级) 和异热模型 (Freundlich).
主要成果:
- ZnO和CuO纳米粒子成功合成和表征.
- 确定了植物聚含量的最佳采集时间.
- 获得了离子的高吸附能力:ZnO为163.6mgg-1和CuO为153.8mgg-1.
- 吸附动力学遵循伪二阶模型,弗洛伊德利希模型最好地描述了数据.
结论:
- 使用Serratula coronata提取物合成的ZnO和CuO纳米粒子是离子的有效吸附剂.
- 植物介导合成方法对重金属修复有希望.
- 该研究提供了关于纳米粒子合成,表征和重金属吸附机制的宝贵数据.
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