Sensitive and environmental friendly sensor on porphyrin functionalized chitosan fiber membrane for Hg2+

IF 9.5 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Research Pub Date : 2024-08-22 DOI:10.1007/s12274-024-6890-0

Yafei Ma, Xinman Liu, Zhiping Fu, Lifen Zhang, Yuexin Guo, Hui Wang, Zhiqian Jia

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引用次数: 0

Abstract

Mercury is the most toxic and harmful heavy metal pollutant, and it is essential to detect and remove mercury from beverages. Inducing the porphyrin molecules into the chitosan structure, a novel membrane sensor tetrakis(4-carboxyphenyl)porphyrin-grafted chitosan fiber membrane (TCPP-CS) was prepared by electrospinning method and applied to recognize Hg²⁺ contaminant selectively. Compared with other common metal ions (Pb²⁺, Cu²⁺, Fe³⁺, Cr³⁺, Mg²⁺, and Zn²⁺), the colorimetric sensor has specific color development and sensitivity to Hg²⁺ and the detection limit of the sensor reaches 1 × 10⁻⁵ mol·L⁻¹. The response time of the membrane is 5 s, and it can be specifically colored in various pH environments convenient for practical application. Hg²⁺ resulted in a visual color change of the fiber membrane from brown to yellow-green, indicating a potential interaction between the porphyrin-functionalized chitosan fiber membrane and Hg²⁺ ions, and the wavelength shift of the UV–visible spectrum can be observed. It has the advantages of simplicity, rapidity, high selectivity, and high sensitivity, providing a new method for removing and detecting heavy metals in traditional Chinese medicine and drinks.

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卟啉功能化壳聚糖纤维膜上的 Hg2+ 灵敏环保传感器

汞是毒性和危害性最大的重金属污染物，因此检测和去除饮料中的汞至关重要。通过将卟啉分子诱导到壳聚糖结构中，利用电纺丝方法制备了新型膜传感器四(4-羧基苯基)卟啉接枝壳聚糖纤维膜（TCPP-CS），并将其应用于选择性识别 Hg2+ 污染物。与其他常见金属离子（Pb2+、Cu2+、Fe3+、Cr3+、Mg2+和Zn2+）相比，该比色传感器对Hg2+具有特定的显色性和灵敏度，检测限达到1×10-5 mol-L-1。膜的响应时间为 5 秒，可在各种 pH 值环境中特定显色，便于实际应用。Hg2+ 导致纤维膜的视觉颜色从棕色变为黄绿色，表明卟啉功能化壳聚糖纤维膜与 Hg2+ 离子之间存在潜在的相互作用，并且可以观察到紫外可见光谱的波长偏移。该方法具有简便、快速、高选择性和高灵敏度等优点，为去除和检测中药饮片中的重金属提供了一种新方法。

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来源期刊

Nano Research 化学-材料科学：综合

CiteScore

14.30

自引率

11.10%

发文量

2574

审稿时长

1.7 months

期刊介绍： Nano Research is a peer-reviewed, international and interdisciplinary research journal that focuses on all aspects of nanoscience and nanotechnology. It solicits submissions in various topical areas, from basic aspects of nanoscale materials to practical applications. The journal publishes articles on synthesis, characterization, and manipulation of nanomaterials; nanoscale physics, electrical transport, and quantum physics; scanning probe microscopy and spectroscopy; nanofluidics; nanosensors; nanoelectronics and molecular electronics; nano-optics, nano-optoelectronics, and nano-photonics; nanomagnetics; nanobiotechnology and nanomedicine; and nanoscale modeling and simulations. Nano Research offers readers a combination of authoritative and comprehensive Reviews, original cutting-edge research in Communication and Full Paper formats. The journal also prioritizes rapid review to ensure prompt publication.