Ultrasensitive and Reusable SERS Substrates Based on Ag-Photodecorated Mn2O3 Microspheres for Nitrofurazone Detection

IF 7.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY ACS Sustainable Chemistry & Engineering Pub Date : 2023-10-20 DOI:10.1021/acssuschemeng.3c02970

Kalingarayanpalayam Matheswaran Arun Kumar, Elumalai Ashok Kumar, Tzyy-Jiann Wang*, Thangavelu Kokulnathan and Yu-Hsu Chang,

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Abstract

A micro/nanocomposite of metal-oxide semiconductor decorated with noble metal has great potential in surface enhanced Raman spectroscopy (SERS) due to the abundant analyte adsorption and the synergistic utilization of charge transfer and electromagnetic mechanisms. Herein, a Mn₂O₃/Ag micro/nanocomposite is presented by decorating hydrothermally synthesized Mn₂O₃ microspheres with photoreduced Ag nanoparticles (NPs) for ultrasensitive detection of nitrofurazone (NFZ). The loading amount of Ag NPs on Mn₂O₃ microspheres is optimized to obtain the utmost Raman signal enhancement. The reusability of SERS substrates is achieved by the photolysis capability of the Mn₂O₃/Ag micro/nanocomposite for NFZ molecules under ultraviolet irradiation. The excellent SERS performance of the Mn₂O₃/Ag micro/nanocomposite is demonstrated by an enhancement factor of 2.05 × 10¹² and an ultralow limit of detection of 7.39 × 10^–13 M for NFZ detection. The relative standard deviation of Raman signal intensities less than 7% shows the uniform and reproducible nature of the Mn₂O₃/Ag-based SERS substrate. The practical analysis of NFZ spiked in the chicken meat solution reveals the recovery values from 86.5 to 98.7%. The retention rate of 92.22% after the fifth photodegradation cycle proves its excellent reusable capability. The performance analysis of Mn₂O₃/Ag-based SERS substrates indicates the bright prospect for their utilization in real sample analysis.

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基于ag光修饰Mn2O3微球的超灵敏可重复使用SERS衬底用于硝基呋喃酮检测

贵金属修饰的金属-氧化物半导体微纳复合材料具有丰富的分析物吸附以及电荷转移和电磁机制的协同利用，在表面增强拉曼光谱(SERS)中具有很大的应用潜力。本文采用光还原银纳米粒子(NPs)修饰水热合成的Mn2O3微球，制备了一种Mn2O3/Ag微/纳米复合材料，用于超灵敏检测硝基呋喃酮(NFZ)。优化了Ag纳米粒子在Mn2O3微球上的负载量，以获得最大的拉曼信号增强。SERS衬底的可重用性是通过Mn2O3/Ag微/纳米复合材料在紫外线照射下对NFZ分子的光解能力来实现的。Mn2O3/Ag微/纳米复合材料的增强因子为2.05 × 1012, NFZ检测下限为7.39 × 10-13 M，具有优异的SERS性能。Raman信号强度的相对标准偏差小于7%，显示了Mn2O3/ ag基SERS衬底的均匀性和可重复性。在鸡肉溶液中添加NFZ的实际分析表明，其回收率为86.5 ~ 98.7%。经过第5次光降解循环后，其保留率为92.22%，证明其具有良好的重复利用能力。对Mn2O3/ ag基SERS衬底的性能分析表明其在实际样品分析中具有广阔的应用前景。

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来源期刊

ACS Sustainable Chemistry & Engineering CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

13.80

自引率

4.80%

发文量

1470

审稿时长

1.7 months

期刊介绍： ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment. The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.