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Kumar H, Duhan J, Obrai S. Highly Sensitive and Selective Fluorescence and Smartphone-Based Sensor for Detection of Rutin Using Boron Nitrogen Co-doped Graphene Quantum Dots. J Fluoresc 2024:10.1007/s10895-024-03823-5. [PMID: 38995477 DOI: 10.1007/s10895-024-03823-5] [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: 05/07/2024] [Accepted: 06/24/2024] [Indexed: 07/13/2024]
Abstract
This research explores the fluorescence properties and photostability of boron nitrogen co-doped graphene quantum dots (BN-GQDs), evaluating their effectiveness as sensors for rutin (RU). BN-GQDs are biocompatible and exhibit notable absorbance and fluorescence characteristics, making them suitable for sensing applications. The study utilized various analytical techniques to investigate the chemical composition, structure, morphology, optical attributes, elemental composition, and particle size of BN-GQDs. Techniques included X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The average particle size of the BN-GQDs was determined to be approximately 3.5 ± 0.3 nm. A clear correlation between the emission intensity ratio and RU concentration was identified across the range of 0.42 to 4.1 μM, featuring an impressively low detection limit (LOD) of 1.23 nM. The application of BN-GQDs as fluorescent probes has facilitated the development of a highly sensitive and selective RU detection method based on Förster resonance energy transfer (FRET) principles. This technique leverages emission at 465 nm. Density Functional Theory (DFT) analyses confirm that FRET is the primary mechanism behind fluorescence quenching, as indicated by the energy levels of the lowest unoccupied molecular orbitals (LUMOs) of BN-GQDs and RU. The method's effectiveness has been validated by measuring RU concentrations in human serum samples, showing a recovery range between 97.8% and 103.31%. Additionally, a smartphone-based detection method utilizing BN-GQDs has been successfully implemented, achieving a detection limit (LOD) of 49 nM.
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Affiliation(s)
- Himanshu Kumar
- Department of Chemistry, Dr. B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India
| | - Jyoti Duhan
- Department of Chemistry, Dr. B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India
| | - Sangeeta Obrai
- Department of Chemistry, Dr. B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India.
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Wang F, Zhang J, Xu L, Ma A, Zhuang G, Huo S, Zou B, Qian J, Cui Y, Zhang W. Magnetic field-assisted surface engineering technology for active regulation of Fe 3O 4 medium to enable the laccase electrochemical biosensing of catechol with visible stripe patterns. Anal Chim Acta 2024; 1311:342739. [PMID: 38816161 DOI: 10.1016/j.aca.2024.342739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Catechol (CC), a prevalent phenolic compound, is a byproduct in various agricultural, chemical, and industrial processes. CC detection is crucial for safeguarding water quality and plays a pivotal role in enhancing the overall quality of life of individuals. Electrochemical biosensors exhibit rapid responses, have small sizes, and can be used for real-time monitoring. Therefore, the development of a fast and sensitive electrochemical biosensor for CC detection is crucial. RESULT In this study, a laccase-based electrochemical biosensor for detection of CC is successfully developed using Fe3O4 nanoparticles as medium and optimized by applying a magnetic field. This research proposes a unique strategy for biosensor enhancement by actively controlling the distribution of magnetic materials on the electrode surface through the application of a magnetic field, resulting in a visibly alternating stripe pattern. This approach effectively disperses magnetic particles, preventing their aggregation and reducing the boundary layer thickness, enhancing the electrochemical response of the biosensor. After fabrication condition optimization, CC is successfully detected using this biosensor. The fabricated sensor exhibits excellent performance with a wide linear detection range of 10-1000 μM, a low detection limit of 1.25 μM, and a sensitivity of 7.9 μA/mM. The fabricated sensor exhibits good selectivity and reliable detection in real water samples. In addition, the laccase-based sensor has the potential for the fast and accurate monitoring of CC in olive oil. SIGNIFICANCE The magnetic field optimization in this study significantly improved the performance of the electrochemical biosensor for detecting CC in environmental samples. Overall, the sensor developed in this study has the potential for fast and accurate monitoring of CC in environmental samples, highlighting the potential importance of a magnetic field environment in improving the performance of catechol electrochemical biosensors.
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Affiliation(s)
- Feng Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China; Institute of Agricultural Products Processing Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
| | - Jie Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Ling Xu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China; Institute of Agricultural Products Processing Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Anzhou Ma
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Guoqiang Zhuang
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Shuhao Huo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Bin Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Jingya Qian
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Yi Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Wen Zhang
- College of Photoelectric Engineering, Chongqing University, Chongqing, 400044, PR China.
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Dhamu VN, Muthukumar S, Prasad S. E-SCAN: Electrochemical Scanning of Carbonates, an In Situ Approach for Screening and Quantifying Inorganic Carbon in Soil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15954-15962. [PMID: 37819200 DOI: 10.1021/acs.jafc.3c02948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A modified three-electrode system was utilized with a correlated ion-capture film that is functional to changes in soil carbonate moieties to determine an understudied pool of soil carbon that is vital toward holistic carbon sequestration─carbonous soil minerals (CSM). This composite sensor was tested on soils with varying carbonate contents using cyclic voltammetry, chromatocoulometry (DC-based), and electrochemical impedance spectroscopy to determine signal output as a function of increasing dose. To determine the in-field capability, a portable potentiostat device was integrated into a probe head setup that could be inserted into soil for testing. The results from these experiments showed a linearity of R2 > 0.97 and a measurable sensing range from 0.01% (100 ppm) to 1% (10 000 ppm). Therefore, a first-of-a-kind in-soil sensor system was developed for determining carbonate content in real soil samples using electrochemistry that can be tested in-field to survey the field-deployable and point-of-use capability of the system.
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Affiliation(s)
- Vikram Narayanan Dhamu
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | | | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
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Hareesha N, Manjunatha J, Tighezza AM, Albaqami MD, Sillanpää M. Electrochemical detection and quantification of catechol based on a simple and sensitive poly(riboflavin) modified carbon nanotube paste electrode. Heliyon 2023; 9:e14378. [PMID: 36942251 PMCID: PMC10023950 DOI: 10.1016/j.heliyon.2023.e14378] [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: 09/24/2022] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 03/09/2023] Open
Abstract
In the present research work, selective and sensitive catechol (CT) detection and quantification were shown in the presence of resorcinol (RS) in 0.2 M phosphate buffer (PB) solution by preparing a low-cost, simple, and green carbon nanotube paste electrode (CNTPE) surface activated with electropolymerized riboflavin (PRF). The morphological, conductivity, and electrochemical features of the modified electrode (PRFMCNTPE) and bare carbon nanotube paste electrode (BCNTPE) materials were analyzed using electrochemical impedance spectroscopy (EIS), field emission scanning electron microscopy (FE-SEM), cyclic voltammetry (CV), and differential pulse voltammetry (DPV). The PRF-activated electrode displays outstanding sensitivity, stability, selectivity, reproducibility, and repeatability for the redox feature of CT with improved electrochemical current and declined electrochemical potential compared to BCNTPE. The peak currents of CT are correlated to the different CT concentrations (CV method: 6.0-60.0 μM & DPV method: 0.5-7.0 μM), and the obtained detection limit (DL) and quantification limit (QL) are found to be 0.025 μM and 0.085 μM (CV method) and 0.0039 μM and 0.0132 μM (DPV method), respectively. The prepared PRFMCNTPE material was advantageous for the examination of CT in environmentally important tap water sample as a real-time application.
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Affiliation(s)
- N. Hareesha
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka, India
| | - J.G. Manjunatha
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka, India
- Corresponding author.
| | - Ammar M. Tighezza
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Munirah D. Albaqami
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mika Sillanpää
- Department of Biological and Chemical Engineering, Aarhus University, Norrebrogade 44, 8000 Aarhus C, Denmark
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Saleem Q, Shahid S, Javed M, Iqbal S, Rahim A, Mansoor S, Bahadur A, Awwad NS, Ibrahium HA, Almufarij RS, Elkaeed EB. Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO 2–polyaniline composite. RSC Adv 2023; 13:10017-10028. [PMID: 37006370 PMCID: PMC10052555 DOI: 10.1039/d3ra00668a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/07/2023] [Indexed: 03/31/2023] Open
Abstract
The conductive composite Co@SnO2–PANI was successfully synthesized using hydrothermal/oxidative synthesis. Using differential pulse voltammetry, a glassy carbon electrode modified with a CoSnO2–PANI (polyaniline)-based electrochemical biosensor has been created for the quick detection of two phenolics, hydroquinone (Hq) and catechol (Cat). Differential pulse voltammetry (DPV) measurements revealed two well-resolved, strong peaks for GCE@Co–SnO2–PANI, which corresponded to the oxidation of Hq and Cat at 275.87 mV and +373.76 mV, respectively. The oxidation peaks of Hq and Cat mixtures were defined and separated at a pH of 8.5. High conductivity and remarkable selectivity reproducibility was tested by electrochemical impedance spectroscopy, chronoamperometry, and cyclic voltammetry techniques in standard solution and real water samples. The proposed biosensor displayed a low detection limit of 4.94 nM (Hq) and 1.5786 nM (Cat), as well as a large linear range stretching from 2 × 10−2 M to 2 × 10−1 M. The real-sample testing showed a good recovery for the immediate detection of Hq (96.4% recovery) and Cat (98.8% recovery) using the investigated sensing apparatus. The synthesized biosensor was characterized by XRD, FTIR, energy dispersive spectroscopy and scanning electron microscopy. The sensors are effectively used in the determination of Hq and Cat in a real water sample.![]()
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Affiliation(s)
- Qasar Saleem
- Department of Chemistry, School of Science, University of Management and TechnologyLahore 54770Pakistan
| | - Sammia Shahid
- Department of Chemistry, School of Science, University of Management and TechnologyLahore 54770Pakistan
| | - Mohsin Javed
- Department of Chemistry, School of Science, University of Management and TechnologyLahore 54770Pakistan
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST)H-12Islamabad46000Pakistan
| | - Abdur Rahim
- Department of Chemistry, COMSATS University IslamabadPakistan
| | - Sana Mansoor
- Department of Chemistry, School of Science, University of Management and TechnologyLahore 54770Pakistan
| | - Ali Bahadur
- Department of Chemistry, College of Science and Technology, Wenzhou-Kean UniversityWenzhou 325060China
| | - Nasser S. Awwad
- Chemistry Department, Faculty of Science, King Khalid UniversityP. O. Box 9004Abha 61413Saudi Arabia
| | - Hala A. Ibrahium
- Biology Department, Faculty of Science, King Khalid UniversityP. O. Box 9004Abha 61413Saudi Arabia
- Department of Semi Pilot Plant, Nuclear Materials AuthorityP. O. Box 530, El MaadiEgypt
| | - Rasmiah S. Almufarij
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman UniversityP. O. Box 84428Riyadh 11671Saudi Arabia
| | - Eslam B. Elkaeed
- Department of Pharmaceutical Sciences, College of Pharmacy, AlMaarefa UniversityRiyadh 13713Saudi Arabia
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Jiang L, Zheng K. Towards the intelligent antioxidant activity evaluation of green tea products during storage: A joint cyclic voltammetry and machine learning study. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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An ultra-selective smart electrochemical sensor based upon hydrophilic core-shell molecularly imprinted polymer for determination of L-tryptophan. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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