纳米结构WS2@Chitosan-Modified用于高效安培检测组胺的丝网印刷碳电极。

IF 4.3 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
ACS Omega Pub Date : 2025-01-14 eCollection Date: 2025-01-28 DOI:10.1021/acsomega.4c10419
Diksha Singh, Ankur Srivastava, Vivek K Chaturvedi, Jay Singh
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引用次数: 0

摘要

组胺是人体某些细胞内的一种关键化学物质,它负责引发各种过敏症状,如打喷嚏和流鼻涕。在过敏的情况下,免疫系统会将无害物质(如某些食物或灰尘)误认为有害物质,一种高效的组胺传感器就变得势在必行。本研究采用水热合成WS2纳米片材料,并将其与壳聚糖(CS)生物聚合物结合在丝网印刷碳电极(SPE)上,建立了一种新型传感平台。通过滴铸将WS2和CS组件集成到SPE上,可以协同提高电导率和各种传感器性能。这种新型杂化材料结合了有机CS和无机WS2组分,应用于微分脉冲伏安法非酶组胺检测。本研究还通过对合成的WS2纳米片的表征进行了晶粒尺寸的测定和表面形貌的评价。在SPE表面浇铸WS2和CS。建议在改良的WS2/CS/SPE电极上电化学测量组胺。组胺测量在1 ~ 100 μM的线性覆盖范围内进行,检测限为0.0844 μM,灵敏度为1.44 × 10-4 mA/μM cm2。开发的传感器具有显著的灵敏度,选择性,稳定性和可重复性,以及扩展的线性范围。因此,该传感技术被用于检测室温(25°C)下发酵食品样品(奶酪、番茄酱、番茄酱和酱油)等包装食品中的组胺水平。研究结果表明,利用电化学传感技术对WS2/CS/SPE电极进行精确的组胺检测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nanostructured WS2@Chitosan-Modified Screen-Printed Carbon Electrodes for Efficient Amperometric Detection of Histamine.

Histamine, a pivotal chemical within certain cells of the human body, is responsible for eliciting various allergic symptoms, such as sneezing and a runny nose. In cases of allergies, where the immune system misidentifies typically harmless substances, such as certain foods or dust, as harmful, an efficient histamine sensor becomes imperative. This research introduces a novel sensing platform by employing a material comprising hydrothermally synthesized WS2 nanosheets and using this with a chitosan (CS) biopolymer on a screen-printed carbon electrode (SPE). Integrating WS2 and CS components on the SPE via drop-casting synergistically enhances conductivity and various sensor properties. This novel hybrid material combines organic CS and inorganic WS2 components applied for nonenzymatic histamine detection via differential pulse voltammetry. This study also included crystallite size determination and surface morphology assessment through characterization of the synthesized WS2 nanosheets. On the surface of the SPE, WS2 and CS were drop-casted. It is recommended that histamine be electrochemically measured on modified WS2/CS/SPE electrodes. Histamine measurements were conducted within a linear coverage of 1-100 μM, with a limit of detection of 0.0844 μM and sensitivity of 1.44 × 10-4 mA/μM cm2. The developed sensor exhibited notable levels of sensitivity, selectivity, stability, and repeatability, along with an extended linear range. The sensing technique was consequently employed to detect the histamine levels in packed food items like fermented food samples (cheese, tomato sauce, tomato ketchup, and soy sauce) at room temperature (25 °C). The findings recommend the utilization of electrochemical sensing on modified WS2/CS/SPE electrodes for accurate histamine detection.

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来源期刊
ACS Omega
ACS Omega Chemical Engineering-General Chemical Engineering
CiteScore
6.60
自引率
4.90%
发文量
3945
审稿时长
2.4 months
期刊介绍: ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.
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