2-Mercaptobenzimidazole/Polyvinylpyrrolidone functionalized gold nanoparticles clad optical fiber for copper ion detection: A novel evanescent wave-based sensing approach

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2023-07-28 DOI:10.1016/j.jphotochem.2023.115049

Revati P. Potdar , Yogesh B. Khollam , Shoyebmohamad F. Shaikh , Deepika Bhandari , Abdullah M. Al-Enizi , Supriya A. Patil , Pravin S. More

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Abstract

Gold nanoparticle-based optical fiber sensors are extensively utilized for the development of chemical sensors. The optical sensing capabilities of the chemical sensor are improved by the localized surface plasmon resonance that is linked with the gold nanoparticles. This study introduces a modified optical fiber sensor with cladding, which is coated with functionalized gold nanoparticles (Au NPs) containing 2′-mercaptobenzimidazole (MBI)/polyvinylpyrrolidone (PVP) to detect copper (Cu⁺²) ions. The study investigated the Cu²⁺ ions sensing capabilities of optical fiber under varying concentrations of PVP while maintaining a constant concentration of Cu⁺²ions. The optical fiber sensor's output voltage increased upon the addition of Cu²⁺ ions, as observed in all samples. The sensor's response was analyzed for Cu²⁺ ions concentrations ranging from 100 to 1000 ppm. The sensor displays a polynomial relationship with increasing Cu²⁺ ions concentration. The optical fiber sensor exhibits higher selectivity towards Cu²⁺ ions compared to sodium, potassium, ammonium, calcium, zinc, phosphate, nitrate, and chlorine ions.

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2-巯基苯并咪唑/聚乙烯吡咯烷酮功能化金纳米粒子包覆光纤用于铜离子检测:一种新的基于倏逝波的传感方法

基于金纳米粒子的光纤传感器被广泛应用于化学传感器的开发。利用与金纳米粒子相结合的局部表面等离子体共振，提高了化学传感器的光学传感能力。本研究介绍了一种新型包层光纤传感器，该传感器包覆含有2′-巯基苯并咪唑(MBI)/聚乙烯吡咯烷酮(PVP)的功能化金纳米粒子(Au NPs)，用于检测铜(Cu+2)离子。在保持恒定浓度的Cu+2离子的情况下，研究了不同浓度PVP下光纤对Cu2+离子的传感能力。光纤传感器的输出电压随着Cu2+离子的加入而增加，在所有样品中都可以观察到。传感器的响应分析了Cu2+离子浓度范围从100到1000 ppm。传感器与Cu2+浓度的增加呈多项式关系。与钠、钾、铵、钙、锌、磷酸盐、硝酸盐和氯离子相比，光纤传感器对Cu2+离子具有更高的选择性。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.