An innovative approach utilizing bimetallic Ag@Sn-oxy nanocomposite with rGO-decorated glassy carbon-modified electrode for high-performance detection of hydroquinone

IF 5.5 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2024-07-29 DOI:10.1007/s42823-024-00783-5

Sethupathy Ramanathan, Panneerselvam Perumal

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Abstract

Herein, the electrochemical technique was employed to detect hydroquinone (HQ) using a modified glassy carbon electrode (GCE) with reduced graphene oxide (rGO) and silver (Ag)-decorated tin oxy-nanoparticles (SnONPs) to form Ag@SnONPs/rGO nanocomposites (NC). The Ag@SnONPs/rGO nanocomposites were morphologically characterized using multiple analytical methods such as XRD, Raman, XPS, HR-SEM, and HR-TEM. This study revealed that Ag@SnONPs/rGO-NC exhibits excellent conductivity due to the presence of rGO that provides potential π–π interactions with SnONPs, while Ag enhances electron-transfer kinetics. This facilitates efficient charge transport within the sensor, thereby improving HQ adsorption. The key advantages of the sensor demonstrate a concentration of 0.5–200 µM, and a low detection limit value of 0.010 µM, and a high sensitivity value of 6.0746 µA µM⁻¹ cm². Under optimal conditions, the Ag@SnONPs/rGO sensor may be used to determine HQ and its concentration using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The Ag@SnONPs-rGO/GCE sensor demonstrated excellent reproducibility, repeatability, and stability. Moreover, the suggested bimetallic nanocomposite effectively determined the presence of HQ in water and cosmetic samples.

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利用双金属 Ag@Sn-oxy 纳米复合材料和 rGO 装饰的玻璃碳改性电极进行对苯二酚高性能检测的创新方法

本文采用电化学技术检测对苯二酚 (HQ)，使用的是还原氧化石墨烯 (rGO) 和银 (Ag) 装饰锡氧纳米粒子 (SnONPs) 形成的 Ag@SnONPs/rGO 纳米复合材料 (NC)。利用 XRD、拉曼、XPS、HR-SEM 和 HR-TEM 等多种分析方法对 Ag@SnONPs/rGO 纳米复合材料进行了形貌表征。研究发现，Ag@SnONPs/rGO-NC 具有优异的导电性，这是因为 rGO 的存在提供了与 SnONPs 的潜在 π-π 相互作用，而 Ag 则增强了电子转移动力学。这有利于传感器内有效的电荷传输，从而改善对 HQ 的吸附。该传感器的主要优势在于其浓度为 0.5-200 µM，检测限值低至 0.010 µM，灵敏度高至 6.0746 µA µM-1 cm2。在最佳条件下，Ag@SnONPs/rGO 传感器可用于使用循环伏安法（CV）和差分脉冲伏安法（DPV）测定 HQ 及其浓度。Ag@SnONPs-rGO/GCE 传感器具有出色的重现性、可重复性和稳定性。此外，所建议的双金属纳米复合材料还能有效测定水和化妆品样品中 HQ 的含量。

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.