通过在聚合物离子交换机上支的银纳米粒子和Fe-Ce混合氧化物从水中去除
Li Li1, Su-Juan Yu2, Rong-Gang Zheng2
1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Ecology and Resources Engineering, He Tao College, Inner Mongolia 015000, China.
Journal of environmental sciences (China)
|October 31, 2024
概括
一种新的纳米复合材料有效地从水中去除. FeO ((OH) -HCO-Ag-D201吸附剂对 (III) 和 (V) 具有很高的吸收能力,证明了其对净化水的潜力.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 水中的污染对环境和健康构成重大风险.
- 开发高效且可重复使用的吸附剂对于修复至关重要.
- 纳米复合材料由于其高表面积和可调节性质,提供了有前途的解决方案.
研究的目的:
- 为了合成和表征一种新的纳米复合材料,以有效地从水中去除.
- 为了研究纳米复合物的吸附性能,动力学和影响因素,对As(III) 和As(V).
- 评估纳米复合材料在净化水中的可重复使用性和潜在应用.
主要方法:
- 纳米复合材料 (FeO(OH) -HCO-Ag-D201) 的制备,通过在聚乙烯离子交换器中封装石,水性氧化物和银纳米粒子.
- 吸附异温和动力学研究,以确定吸能力和吸率,为 (III) 和 (V).
- 评价pH值,共存离子和自然有机物对去除效率的影响.
主要成果:
- 该FeO ((OH) -HCO-Ag-D201纳米复合材料对As ((III) 和As ((V) 均表现出极好的吸附性.
- 酸的吸附能力达到40.12毫克/克,明显高于没有银纳米颗粒的复合材料 (22.03毫克/克).
- 吸附跟随了二次动力学为 (III) 和一次动力学为 (V),在中性至基本条件下具有最佳性能. (III) 的去除涉及部分氧化到 (V).
结论:
- 合成的FeO(OH) -HCO-Ag-D201纳米复合材料显示出在去除方面具有卓越的吸附性能.
- 石和银纳米颗粒的协同作用,以及含水氧化,增强了的氧化和去除.
- 该纳米复合材料的可重复使用性强调了其在净化污染水中的实用应用的巨大潜力.
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