A ratiometric fluorescence sensor based on HFeO-modified NH2-MIL-101(Fe) and Ru-embedded for supersensitive and visual detection of As(V) in water

IF 5.4 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2026-10-08 DOI:10.1007/s00604-026-08441-5

Fengqin Yin, Xudong He, Xueting Liu, Dong Guo, Jiahui Wang, Xinxin Cui, Zongping Fang, Tai Ye, Hui Cao, Liling Hao, Fei Xu

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引用次数: 0

Abstract

An enhanced ratiometric fluorescence sensor Ru@HFeO@NH₂-MIL-101 (Fe) for the determination of arsenate was constructed by using HFeO-modified NH₂-MIL-101 (Fe) as the response signal and Ru(bpy)₃²⁺ as the reference signal, which can be used for sensitive and visual detection of As(V). Because the HFeO nanoparticles were cleverly in-situ generated within the NH₂-MIL-101(Fe) framework, the adsorption capacity of As(V) was enhanced 32% and further increased fluorescence ratio. The sensor exhibited a good linear relationship within As(V) concentration range 0.05-1 and 3–30 µM, with a detection limit (LOD) of 0.039 µM. The sensor also exhibited good selectivity and practical application performance, and can be utilized by a smartphone for visual detection of As(V). This provides an effective method for the sensitive detection of As(V) in complex environmental conditions.

Graphical Abstract

查看原文本刊更多论文

基于hfeo修饰的NH2-MIL-101（Fe）和ru的比例荧光传感器用于水中As(V)的超灵敏和视觉检测

以hfeo修饰的NH2-MIL-101 （Fe）为响应信号，Ru(bpy)32+为参比信号，构建了用于砷酸盐测定的增强型比例荧光传感器Ru@HFeO@NH2-MIL-101 (Fe)，该传感器可用于as (V)的灵敏和视觉检测。由于在NH2-MIL-101（Fe）框架内巧妙地原位生成了HFeO纳米颗粒，因此对As(V)的吸附能力提高了32%，并进一步提高了荧光比。该传感器在As(V)浓度范围0.05-1和3-30µM内呈良好的线性关系，检测限（LOD）为0.039µM。该传感器还具有良好的选择性和实际应用性能，可用于智能手机的As(V)视觉检测。这为复杂环境条件下砷(V)的灵敏检测提供了一种有效的方法。图形抽象

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来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.