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Cheng XL, Fu TR, Zhang DF, Xiong JH, Yang WY, Du J. Biomass-assisted fabrication of rGO-AuNPs as surface-enhanced Raman scattering substrates for in-situ monitoring methylene blue degradation. Anal Biochem 2023; 667:115087. [PMID: 36858251 DOI: 10.1016/j.ab.2023.115087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/12/2023] [Accepted: 02/21/2023] [Indexed: 03/02/2023]
Abstract
Reduced graphene oxide-gold nanoparticles nanocomposites (rGO-AuNPs) with high surface-enhanced Raman scattering (SERS) activity was created by biomass-assisted green synthesis with Lilium casa blanca petals biomass for the first time, and its application for methylene blue (MB) degradation was explored through in-situ monitoring. Lilium casa blanca petals biomass was used as a reducing agent to reduce GO and chloroauric acid successively when carrying out rGO-AuNPs in-situ synthesis while it also acted as a capping agent. The produced rGO had oxygen-containing functional groups which had an outstanding performance in enhancing the SERS effect. Characterization results confirmed that the AuNPs were grafted onto the rGO sheet, and the mechanism study showed that total flavonoids in Lilium casa blanca petals biomass were the main biological compounds involved in the reduction. rGO-AuNPs had a high Raman enhancement factor (EF) which could reach 3.88 × 107. The synthesized nanocomposite also had a good catalytic activity that could be employed as catalyst in MB degradation, and it could complete degradation within 15min. The reaction rate increased linearly with the amount of rGO-AuNPs, and the degradation could be in-situ monitored both by UV and SERS.
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Affiliation(s)
- Xin-Lei Cheng
- College of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - Ting-Rui Fu
- College of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - Dan-Feng Zhang
- College of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - Jian-Hua Xiong
- College of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wu-Ying Yang
- College of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Juan Du
- College of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang, 330045, China.
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Qu C, Li Y, Du S, Geng Y, Su M, Liu H. Raman spectroscopy for rapid fingerprint analysis of meat quality and security: Principles, progress and prospects. Food Res Int 2022; 161:111805. [DOI: 10.1016/j.foodres.2022.111805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 07/06/2022] [Accepted: 08/18/2022] [Indexed: 11/28/2022]
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Raghavan VS, O'Driscoll B, Bloor JM, Li B, Katare P, Sethi J, Gorthi SS, Jenkins D. Emerging graphene-based sensors for the detection of food adulterants and toxicants - A review. Food Chem 2021; 355:129547. [PMID: 33773454 DOI: 10.1016/j.foodchem.2021.129547] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/25/2021] [Accepted: 03/04/2021] [Indexed: 02/06/2023]
Abstract
The detection of food adulterants and toxicants can prevent a large variety of adverse health conditions for the global population. Through the process of rapid sensing enabled by deploying novel and robust sensors, the food industry can assist in the detection of adulterants and toxicants at trace levels. Sensor platforms which exploit graphene-based nanomaterials satisfy this requirement due to outstanding electrical, optical and thermal properties. The materials' facile conjugation with linkers and biomolecules along with the option for further enhancement using nanoparticles results in highly sensitive and selective sensing characteristics. This review highlights novel applications of graphene derivatives for detection covering three important approaches; optical, electrical (field-effect) and electrochemical sensing. Suitable graphene-based sensors for portable devices as point-of-need platforms are also presented. The future scope of these sensors is discussed to showcase how these emerging techniques will disrupt the food detection sector for years to come.
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Affiliation(s)
- Vikram Srinivasa Raghavan
- Optics and Microfluidics Instrumentation Lab, Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India.
| | - Benjamin O'Driscoll
- Wolfson Nanomaterials & Devices Laboratory, School of Engineering, Computing and Mathematics, Plymouth University, Devon PL4 8AA, UK
| | - J M Bloor
- Wolfson Nanomaterials & Devices Laboratory, School of Engineering, Computing and Mathematics, Plymouth University, Devon PL4 8AA, UK
| | - Bing Li
- Department of Brain Sciences, Imperial College, London W12 0NN, UK
| | - Prateek Katare
- Optics and Microfluidics Instrumentation Lab, Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
| | - Jagriti Sethi
- Wolfson Nanomaterials & Devices Laboratory, School of Engineering, Computing and Mathematics, Plymouth University, Devon PL4 8AA, UK
| | - Sai Siva Gorthi
- Optics and Microfluidics Instrumentation Lab, Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
| | - David Jenkins
- Wolfson Nanomaterials & Devices Laboratory, School of Engineering, Computing and Mathematics, Plymouth University, Devon PL4 8AA, UK
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