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绿色合成和吸附性能欧卡利普斯球叶改性氧化铁-石墨烯氧化物纳米复合物从水溶液中去除Cd (II) 和Pb (II)

Divya Bhushan¹, Renuka Gupta²

¹Department of Environmental Sciences, J.C. Bose University of Science & Technology, YMCA, Faridabad, Haryana, India.

Environmental geochemistry and health

|June 23, 2025

概括

使用树叶提取物的一种新的绿色合成方法创造了一种优异的氧化铁-石墨烯氧化物纳米复合材料 (MGOE) 用于重金属的去除. MGOE有效地从水中去除Cd (II) 和Pb (II) 离子,提供一种可持续的解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
纳米技术纳米技术

背景情况:

水溶液中的重金属污染对环境和健康构成重大风险.
传统的重金属去除方法通常是昂贵的,对环境造成负担.
纳米复合材料为有效的污染物修复提供了有希望的解决方案.

研究的目的:

开发和评估一种生物铁氧化物-石墨烯氧化物纳米复合物,该纳米复合物是使用树全球叶提取物合成的,用于去除重金属.
为了比较绿色合成纳米复合材料 (MGOE) 与化学合成对应物 (MGO) 的性能.
调查 (Cd) 和 (Pb) 离子的吸附效率和机制.

主要方法:

铁氧化物-石墨烯氧化物纳米复合材料通过使用常规化学方法 (MGO) 和绿色合成方法与树叶提取物 (MGOE) 的联合沉来合成.
使用FESEM-EDX,TEM,XRD,FTIR,BET和pH_PZC测量的结构性,功能性和表面性质的表征.
进行了批量吸附实验,以确定最佳条件 (pH,度,剂量,时间) 并评估Cd (II) 和Pb (II) 的吸附能力.

主要成果:

与MGO相比,MGOE表现出更高的表面积 (156.45m²/g) 和增强的吸附能力.
使用MGOE的最大吸附能力是Cd (II) 的42.10 mg/g和Pb (II) 的105.15 mg/g.
吸附遵循兰格穆尔异热模型和伪二阶动力学,表明化学吸附;这个过程是自发的和内热的.

结论:

使用树叶提取物的绿色合成方法产生了一种高效且具有成本效益的吸附剂 (MGOE) 用于重金属修复.
与化学合成的MGO相比,MGOE表现出优越的性能,突出了其在可持续水处理方面的潜力.
开发的纳米复合材料在多个吸附-脱附周期中显示出良好的可重复使用性.

关键词:

树叶提取物树叶提取物吸附方式吸附方式吸附方式 Cd (((II) 的情况.在纳米复合材料.Pb(II) 的情况.

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