生物质衍生活性碳作为光探头,用于在废水中灵敏检测 (II)
Nancy Jaswal1, Jagdeep Kour1, Pramod Kumar2
1Department of Chemistry & Chemical Sciences, School of Physical & Material Sciences, Central University of Himachal Pradesh, Dharamshala, 176215, India.
Journal of fluorescence
|October 14, 2025
概括
我们从香茎活性炭 (BS-AC (400)) 开发了一种新的光传感器,用于检测水中的 (Hg2+). 这种可持续材料提供了敏感和选择性的检测,对于环境监测至关重要.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 水中的 (Hg2+) 污染由于其毒性和生物积累而对环境和健康造成重大危害.
- 有效和低成本的检测方法对于监测水生生态系统中的含量至关重要.
研究的目的:
- 为了合成和表征茎 (BS-AC (400)) 的新型硫化活性碳作为光探针.
- 评估BS-AC (400) 在水溶液中检测离子 (Hg2+) 的效率和选择性.
主要方法:
- 使用硫酸激活和回火的BS-AC (400) 的合成.
- 使用X射线光电子光谱 (XPS),里埃变换红外光谱 (FTIR),X射线衍射 (XRD) 和高分辨率传输电子显微镜 (HR-TEM/SAED) 的表征.
- 用于检测离子的光谱学,包括选择性和干扰研究.
主要成果:
- BS-AC (400) 在335nm (230nm激发) 显示出强烈的光发光,该光发光被Hg2+选择性灭.
- 实现了Hg2+的低检测极限9.73μM,在真实水样中具有出色的可重复性,光稳定性和适用性 (94-103%的回收率).
- 与其他生物质衍生传感器相比,具有较高的选择性,归因于Hg2+-S相互作用和 heteroatom doping.
结论:
- BS-AC (400) 是一种具有成本效益,高效率和选择性的光探针,用于敏感的Hg2+检测.
- 该材料对环境水系统中可持续和可扩展的实时监测具有很大的前景.
- 异原子兴奋剂显著提高了用于检测的传感性能.
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