多功能纳米复合材料用于可持续的山水处理:对吸附,统计优化和抗菌作用的洞察
Adiba Khan1, Zeenat Sheerazi1, Sneha Shukla1
1Department of Chemistry, Jamia Millia Islamia, New Delhi, India.
Chemosphere
|July 25, 2025
概括
一种新的绿色合成纳米复合物,ZnO@MoS2/Rheum emodi (ZMR),有效地从污染的河水中去除有毒的六价 (Cr(VI)). 此外,ZMR吸附剂还表现出抗菌性质,并改善了水的整体质量,生态风险较低.
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:
- 德里山河的污染对环境和健康构成重大风险.
- 六价 (Cr(VI)) 是一种毒性污染物,在山河中超过了允许的限度.
- 开发高效和环保的吸附剂对于水资源整治至关重要.
研究的目的:
- 为了合成和描述一种新的绿色合成纳米复合材料,ZnO@MoS2/Rheum emodi (ZMR).
- 评估ZMR在从污染的山河水中去除Cr (VI) 的有效性.
- 评估ZMR的多功能性质,包括抗菌活性和生态影响.
主要方法:
- 绿色合成 ZnO@MoS2/Rheum emodi (ZMR) 纳米复合材料的绿色合成.
- 使用FT-IR,XRD,BET,SEM,TEM,SAED,EDS,XPS和TGA进行全面的表征.
- 使用响应表面方法 (RSM) 与中央复合材料设计 (CCD) 优化Cr(VI) 吸附条件.
- 吸附动力学,同热和热力学分析.
- 评估ZMR再生,浸出,抗菌疗效和生态毒性.
主要成果:
- ZMR纳米复合材料已成功合成和表征.
- 在80分钟的接触时间,pH值9.0和0.15g的L-1ZMR剂量时,达到98.84%的最佳CrVI去除.
- 吸附遵循伪二次动力学和兰迈尔等温法 (Qmax = 684 mg g-1).
- ZMR表现出优异的再生 (3 个周期),Zn/Mo 漏率可以忽略不计.
- 观察到对Serratia marcescens具有显著的抗菌活性,并改善了水质参数 (DO,BOD,COD,pH,盐度).
- 毒性评估证实ZMR成分的生态风险较低.
结论:
- 绿色合成的ZMR纳米复合材料是一种高效,具有成本效益和环保的吸附剂,用于Cr (VI) 整治.
- ZMR提供了多功能益处,包括抗菌性质和整体水质改善.
- 该研究提出了一种可持续的方法来处理工业污染的河水.
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