吸附增强灵敏度用于通过聚乙硫) 基激光诱导石墨烯对迪克洛芬雅克的电化学检测
Vikram P Wanjari1, Pawan Kumar2, Siddhartha P Duttagupta1,3
1Centre for Research in Nanotechnology and Science, Indian Insitute of Technology Bombay, Mumbai 400076, India.
Langmuir : the ACS journal of surfaces and colloids
|December 23, 2024
概括
我们开发了一种使用聚硫 (PES-LIG) 的新型激光诱导石墨烯 (LIG) 传感器,用于检测水中的新出现的污染物二二 (DCF). 这种新的传感器提供了增强的灵敏度和自发吸附,以实现高效的环境监测.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 分析化学 分析化学
背景情况:
- 新出现的污染物,如非类固醇抗炎药物迪克洛芬 (DCF),对环境和人类健康构成重大风险.
- 有效且负担得起的传感平台对于监测水和废水中的这些污染物至关重要.
- 激光诱导石墨烯 (LIG) 是传感器开发的一个有前途的材料,由于其独特的3D多孔结构和易于制造.
研究的目的:
- 开发和描述一种新的激光诱导石墨烯 (LIG) 传感器,用于检测二二 (DCF).
- 调查基于聚乙硫的LIG (PES-LIG) 与基于聚胺的LIG (PI-LIG) 在DCF传感方面的性能.
- 为了证明LIG的自发吸附能力,以提高污染物检测.
主要方法:
- 在聚硫 (PES) 基板上制造LIG,使用一步激光工艺.
- 对PES-LIG和PI-LIG传感器的电化学表征.
- 评估用于DCF检测的传感器性能,包括灵敏度,检测极限和选择性.
- 在现实世界样本中测试传感器,包括废水和自来水.
主要成果:
- 与PI-LIG相比,PES-LIG对激光照射的反应性更强,这是由于其多孔和纤维表面.
- PES-LIG 传感器表明DCF在没有外部潜力的情况下自发吸附,从而提高了灵敏度.
- 对于DCF传感,获得了0.2774μA μM-1的高灵敏度和0.1μM的低检测极限.
- 开发的传感器表现出明显的选择性,并成功地用于测量废水和自来水样本中的DCF.
结论:
- 基于聚乙硫的激光诱导石墨烯 (PES-LIG) 提供了一个高度有效的平台,用于敏感和选择性检测新出现的污染物二二 (DCF).
- LIG的自发吸附特性增强了传感能力,为改善环境监测铺平了道路.
- 这项工作突出了基板-激光相互作用在为先进的污染物传感和去除应用量身定制LIG特性方面的潜力.
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