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Yang Y, Chen S, Zhang C, Li Y, Zong X, Lv Y, Zhang M. Subtle adjustment of the cyclic potential on electro-activated glassy carbon electrodes for sensitive sensing of methyl parathion. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2522-2532. [PMID: 38587853 DOI: 10.1039/d4ay00079j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Facile electro-activated glassy carbon electrodes (e-GCEs), which are prepared in electrolyte solution with a certain potential for a few seconds, have been verified to improve analytical performance toward not a few electro-active molecules recently. Nevertheless, how and why the potential plays an important role is not clear, and has even not received enough consideration. In this paper, we found that the mode and the range of applied potential significantly impacted the sensitivity of methyl parathion (MP), which is a typical pesticide with the electro-active group of -NO2. Compared with constant potential, the e-GCE with cyclic potential provided a much more stable baseline during MP detection. Additionally, the electro-oxidation peak current of MP at around -0.1 V on it was higher than another changeable potential (constant current). What's more interesting, with cyclic potential for 50 segments from -2 to 1.5 V, the peak current value increased by 30 times in comparison with a bare GCE, but only 2 times from -2 to 1 V. Then after systematic investigation including structures of the electrode surface and functional groups, we speculated that the produced group of O-CO in the process of activation and remaining groups of C-O and CO on the bare GCE surface are beneficial for adsorbing MP molecules leading to enhanced peak current. Employing the proposed e-GCE, the limit of detection of MP reached 0.015 μM and the reproducibility was perfect. This work elucidates the potent impact of electro-activation potential parameters on electroanalysis behaviors.
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Affiliation(s)
- Yunyin Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Sian Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Changqiu Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yanqing Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xinrong Zong
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yitao Lv
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Min Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
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2
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Cai T, Chen M, Yang J, Tang C, Lu X, Wei Z, Jiang H, Hou Y, Zhao J, Yu P. An AuNPs-based electrochemical aptasensor for the detection of 25-hydroxy vitamin D 3. ANAL SCI 2024; 40:599-607. [PMID: 38190076 DOI: 10.1007/s44211-023-00489-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/04/2023] [Indexed: 01/09/2024]
Abstract
Vitamin D3 (VD3) is the main form of vitamin D and an essential nutrient for maintaining human life. Currently, traditional methods for detecting 25-hydroxyvitamin D3(25(OH)D3) are complex and expensive. In this study, we constructed an accurate, sensitive, simple, and cost-effective label-free biosensor based on an aptamer for the detection of 25(OH)D3. The aptamer-modified sulfhydryl adopted self-assembly as a way to stably immobilize at the glassy carbon electrode (GCE) surface modified by gold nanoparticles (AuNPs). Upon 25(OH)D3 binding to the aptamer, the complexes inhibit electron transfer at the electrode surface, leading to reduced [Fe(CN)6]3-/4- redox peak current. Consequently, the quantity of 25(OH)D3 that interacts with the electrode-bound aptamer correlates with the observed electric current response values. The Aptamer/AuNPs/GCE aptasensor achieved direct and highly sensitive detection of 25(OH)D3 over a wide concentration range (1.0-1000 nM), with a limit of detection of 1.0 nM. At the same time, other molecules with a similar structure, such as 25(OH)D2, Vitamin D3, and Vitamin D2, had lower response interference than 25(OH)D3. Therefore, this biosensor has great potential to become a portable diagnostic device for 25(OH)D3.
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Affiliation(s)
- Tongji Cai
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Meilun Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Jie Yang
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Chunhua Tang
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Xiaoling Lu
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Zheng Wei
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Hanbing Jiang
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Yucui Hou
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China
| | - Jia Zhao
- Changsha Cinotohi Technology Co., Ltd, No. 601, North Dongfanghong Road, Changsha, 410013, Hunan, China
| | - Peng Yu
- Xiangya School of Pharmaceutical Sciences, Central South University, No. 172, Tongzipo Road, Changsha, 410013, Hunan, China.
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3
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Colin C, Levallois P, Botsos-Margerit U, Clément F, Zigah D, Arbault S. Easy cleaning plus stable activation of glassy carbon electrode surface by oxygen plasma. Bioelectrochemistry 2023; 154:108551. [PMID: 37677984 DOI: 10.1016/j.bioelechem.2023.108551] [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: 03/02/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/09/2023]
Abstract
Glassy carbon (GC) electrodes are widely used in electroanalytical applications especially in bioelectrochemistry. Their use starts with an efficient surface cleaning and activation protocol, mostly based on surface polishing steps. We studied the use of an oxygen plasma exposure of GC electrodes to replace common polishing procedures. The cyclic voltammetry (CV) responses of ferrocyanide and ferrocene-dimethanol were used to compare brand new, surface-polished and plasma-treated GC electrodes. Plasma treatment induces CV responses with improved features, close to theoretical values, as compared to other methods. The plasma effects were quasi-stable over a week when electrodes were stored in water, this being explained by increased surface energy and hydrophilicity. Furthermore, when electroreduction of diazonium was performed on GC electrodes, the surface blockade could be removed by the plasma. Thus, a short oxygen plasma treatment is prone to replace polishing protocols, that display person-dependent efficiency, in most of the experiments with GC electrodes.
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Affiliation(s)
- Camille Colin
- Univ. Bordeaux, Bordeaux INP, CNRS, ISM, UMR 5255, F-33400 Talence, France
| | - Pierre Levallois
- Univ. Bordeaux, Bordeaux INP, CNRS, ISM, UMR 5255, F-33400 Talence, France
| | | | - Franck Clément
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, 64600 Anglet, France
| | - Dodzi Zigah
- Univ. Bordeaux, Bordeaux INP, CNRS, ISM, UMR 5255, F-33400 Talence, France; Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, CNRS, F-86073 Poitiers, France.
| | - Stéphane Arbault
- Univ. Bordeaux, Bordeaux INP, CNRS, ISM, UMR 5255, F-33400 Talence, France; Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
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4
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Lv Y, Zhang Y, Yang Y, Li J, Wang J, Xiao X, Zhang M. Strategy of In Situ Electrochemical Regulation for Highly Enhanced Nonenzymatic Sensing of Carbaryl. Anal Chem 2023; 95:4015-4023. [PMID: 36802553 DOI: 10.1021/acs.analchem.2c04373] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Specific and sensitive sensing of most pesticide residues relies on enzymes such as acetylcholinesterase and advanced materials, which need to be loaded on the surface of working electrodes, leading to instability, uneven surface, tedious process, and high cost. Meanwhile, employing certain potential or current in electrolyte solution could also modify the surface in situ and overcome these drawbacks. However, this method is only regarded as electrochemical activation widely applied in the pretreatment of electrodes. In this paper, by means of regulating the electrochemical technique and its parameters, we prepared a proper sensing interface and derivatized the carbaryl (a carbamate pesticide) hydrolyzed form (1-naphthol) to enhance sensing by 100 times within several minutes. After regulation I by chronopotentiometry with 0.2 mA for 20 s or chronoamperometry with 2 V for 10 s, abundant oxygen-containing groups form and the ordered carbon structure is destroyed. Sweeping from -0.5 to 0.9 V through cyclic voltammetry for only one segment, following regulation II, the composition of oxygen-containing groups changes and the disordered structure is alleviated. Finally, on the constructed sensing interface, test by regulation III through differential pulse voltammetry from 0.8 to -0.4 V, resulting in derivatization of 1-naphthol during 0.8-0 V, followed by electroreduction of the derivative at around -0.17 V. Compared with the electro-oxidation peak at 0.5 V in previous reports, it is essential to improve specificity, even toward several other carbamate pesticides with similar structures. Hence, the in situ electrochemical regulation strategy has demonstrated great potential for effective sensing of electroactive molecules.
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Affiliation(s)
- Yitao Lv
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Yi Zhang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Yunyin Yang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Jingyan Li
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Jiacheng Wang
- Medical College, Yangzhou University, No. 11 Huaihai Road, Yangzhou, Jiangsu 225009, China
| | - Xilin Xiao
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Min Zhang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
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5
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Veloso WB, Ataide VN, Rocha DP, Nogueira HP, de Siervo A, Angnes L, Muñoz RAA, Paixão TRLC. 3D-printed sensor decorated with nanomaterials by CO 2 laser ablation and electrochemical treatment for non-enzymatic tyrosine detection. Mikrochim Acta 2023; 190:63. [PMID: 36670263 DOI: 10.1007/s00604-023-05648-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/06/2023] [Indexed: 01/22/2023]
Abstract
The combination of CO2 laser ablation and electrochemical surface treatments is demonstrated to improve the electrochemical performance of carbon black/polylactic acid (CB/PLA) 3D-printed electrodes through the growth of flower-like Na2O nanostructures on their surface. Scanning electron microscopy images revealed that the combination of treatments ablated the electrode's polymeric layer, exposing a porous surface where Na2O flower-like nanostructures were formed. The electrochemical performance of the fabricated electrodes was measured by the reversibility of the ferri/ferrocyanide redox couple presenting a significantly improved performance compared with electrodes treated by only one of the steps. Electrodes treated by the combined method also showed a better electrochemical response for tyrosine oxidation. These electrodes were used as a non-enzymatic tyrosine sensor for quantification in human urine samples. Two fortified urine samples were analyzed, and the recovery values were 106 and 109%. The LOD and LOQ for tyrosine determination were 0.25 and 0.83 μmol L-1, respectively, demonstrating that the proposed devices are suitable sensors for analyses of biological samples, even at low analyte concentrations.
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Affiliation(s)
- William B Veloso
- Institute of Chemistry, Department of Fundamental Chemistry, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Vanessa N Ataide
- Institute of Chemistry, Department of Fundamental Chemistry, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Diego P Rocha
- Federal Institute of Paraná, Pitanga, PR, 85200-000, Brazil
| | - Helton P Nogueira
- Institute of Chemistry, Department of Fundamental Chemistry, University of São Paulo, São Paulo, SP, 05508-000, Brazil.,Department of Physical Chemistry, Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil
| | - Abner de Siervo
- Institute of Physics "Gleb Wataghin," Applied Physics Department, State University of Campinas, Campinas, SP, 13083-859, Brazil
| | - Lucio Angnes
- Institute of Chemistry, Department of Fundamental Chemistry, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Rodrigo A A Muñoz
- Institute of Chemistry, Federal University of Uberlândia, Uberlândia, MG, 38400-902, Brazil
| | - Thiago R L C Paixão
- Institute of Chemistry, Department of Fundamental Chemistry, University of São Paulo, São Paulo, SP, 05508-000, Brazil.
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6
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Acid phosphate-activated glassy carbon electrode for simultaneous detection of cadmium and lead. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Highly Sensitive Electrochemical Sensor for Sunset Yellow Based on Electrochemically Activated Glassy Carbon Electrode. Molecules 2022; 27:molecules27165221. [PMID: 36014459 PMCID: PMC9412420 DOI: 10.3390/molecules27165221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/31/2022] [Accepted: 08/08/2022] [Indexed: 12/02/2022] Open
Abstract
Electrochemically activated glassy carbon electrode (AGCE) was fabricated and applied for sensitive and selective detection of sunset yellow (SY). The electroanalysis of SY was investigated by square wave voltammetry (SWV). Owed to the specific oxygen-contained functional groups and the outstanding conductivity of AGCE, the proposed sensor exhibits an enhanced oxidation peak current of SY when compared with non-activated glass carbon electrode (GCE). Under the optimal analytical conditions, the oxidation peak current is linear with SY concentration in the range of 0.005–1.0 μM. The low limit of detection is 0.00167 μM (S/N = 3). This method is applied for the detection of SY in the actual samples. The recovery is between 96.19 and 103.47%, indicating that AGCE is suitable for the determination of SY in beverage sample.
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8
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Wang C, Lv Y, Hu X, Chen Z, Li J, Zhang M. A “two-step” assay based on electro-activation for rapid determination of methylglyoxal in honey and beer. Anal Chim Acta 2022; 1203:339688. [DOI: 10.1016/j.aca.2022.339688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/17/2022] [Accepted: 03/04/2022] [Indexed: 11/28/2022]
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9
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Electrochemical sensor for uranium monitoring in natural water based on poly Nile blue modified glassy carbon electrode. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-021-05102-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Kulpa-Koterwa A, Ossowski T, Niedziałkowski P. Functionalized Fe 3O 4 Nanoparticles as Glassy Carbon Electrode Modifiers for Heavy Metal Ions Detection-A Mini Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7725. [PMID: 34947318 PMCID: PMC8709283 DOI: 10.3390/ma14247725] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/11/2021] [Accepted: 12/12/2021] [Indexed: 01/15/2023]
Abstract
Over the past few decades, nanoparticles of iron oxide Fe3O4 (magnetite) gained significant attention in both basic studies and many practical applications. Their unique properties such as superparamagnetism, low toxicity, synthesis simplicity, high surface area to volume ratio, simple separation methodology by an external magnetic field, and renewability are the reasons for their successful utilisation in environmental remediation, biomedical, and agricultural applications. Moreover, the magnetite surface modification enables the successful binding of various analytes. In this work, we discuss the usage of core-shell nanoparticles and nanocomposites based on Fe3O4 for the modification of the GC electrode surface. Furthermore, this review focuses on the heavy metal ions electrochemical detection using Fe3O4-based nanoparticles-modified electrodes. Moreover, the most frequently used electrochemical methods, such as differential pulse anodic stripping voltammetry and measurement conditions, including deposition potential, deposition time, and electrolyte selection, are discussed.
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Affiliation(s)
- Amanda Kulpa-Koterwa
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland;
| | | | - Paweł Niedziałkowski
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland;
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11
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Mazurków JM, Kusior A, Radecka M. Electrochemical Characterization of Modified Glassy Carbon Electrodes for Non-Enzymatic Glucose Sensors. SENSORS 2021; 21:s21237928. [PMID: 34883931 PMCID: PMC8659783 DOI: 10.3390/s21237928] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/17/2021] [Accepted: 11/24/2021] [Indexed: 01/07/2023]
Abstract
The diversity of materials proposed for non-enzymatic glucose detection and the lack of standardized protocols for assessing sensor performance have caused considerable confusion in the field. Therefore, methods for pre-evaluation of working electrodes, which will enable their conscious design, are currently intensively sought. Our approach involved comprehensive morphologic and structural characterization of copper sulfides as well as drop-casted suspensions based on three different polymers-cationic chitosan, anionic Nafion, and nonionic polyvinylpyrrolidone (PVP). For this purpose, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy were applied. Subsequently, comparative studies of electrochemical properties of bare glassy carbon electrode (GCE), polymer- and copper sulfides/polymer-modified GCEs were performed using electrochemical impedance spectroscopy (EIS) and voltammetry. The results from EIS provided an explanation for the enhanced analytical performance of Cu-PVP/GCE over chitosan- and Nafion-based electrodes. Moreover, it was found that the pH of the electrolyte significantly affects the electrocatalytic behavior of copper sulfides, indicating the importance of OHads in the detection mechanism. Additionally, diffusion was denoted as a limiting step in the irreversible electrooxidation process that occurs in the proposed system.
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12
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Lv Y, Sun J, Qiao S, Zhang M, Li J. A facile, inexpensive and green electrochemical sensor for sensitive detection of imidacloprid residue in rice using activated electrodes. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3649-3658. [PMID: 34368826 DOI: 10.1039/d1ay00984b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The development of sensitive, facile, cost-effective and eco-friendly sensors is essential for monitoring imidacloprid (IDP) residue on a large scale. Compared with popular modification of electrodes with advanced materials, electrochemical activation is promising at this point. In this paper, we found that strongly basic electrolytes (e.g. KOH and K3PO4) and applying cyclic potential during the activating process are beneficial to greatly amplify the electro-reduction response of IDP by nearly 16 times. Combining the characterization of activated electrodes with electrochemical behavior analysis of IDP, it is speculated that specific oxygen-contained functional groups were formed to bond with IDP molecules, leading to fast electron transfer kinetics. Then a sensitive IDP sensor has been developed with a low limit of detection (LOD) of 0.03 μM in the range of 0.1-100 μM. The methodological evaluation including reproducibility, stability and recovery has been also carefully studied, verifying the potential of proposed activated electrodes for application in rice samples.
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Affiliation(s)
- Yitao Lv
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shanxi 712100, China.
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14
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Burešová Z, Klikar M, Mazúr P, Mikešová M, Kvíčala J, Bystron T, Bureš F. Redox Property Tuning in Bipyridinium Salts. Front Chem 2021; 8:631477. [PMID: 33732685 PMCID: PMC7958642 DOI: 10.3389/fchem.2020.631477] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/21/2020] [Indexed: 11/28/2022] Open
Abstract
Bipyridinium salts are currently very popular due to their perspective applications in redox flow batteries. Hence, we designed and prepared a series of bipyridiniums based on 2,2′-, 3,3′-, and 4,4′-bipyridine and 2,2′-bipyrimidine. The straightforward synthesis utilizes commercially or readily available starting compounds and their direct N-alkylation, mostly using 1,3-propanesultone. All eleven target derivatives with systematically evolved structure were investigated by cyclic voltammetry, which allowed elucidating thorough structure-property relationships. The electrochemical behavior depends primarily on the parent scaffold, type of N-alkylation, number of quaternized nitrogen atoms, planarity, counter ion as well as the used media. Two derivatives featuring quasi-reversible redox processes were further tested on rotating disc electrode and in a flow battery half-cell. 4,4′-Bipyridinium derivative bearing two sultone residues showed better performance and stability in the flow half-cell with small capacity decays of 0.09/0.15% per reduction-oxidation cycle, based on the number of the utilized redox processes (one/two).
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Affiliation(s)
- Zuzana Burešová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czechia
| | - Milan Klikar
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czechia
| | - Petr Mazúr
- Department of Chemical Engineering, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Prague, Czechia
| | - Michaela Mikešová
- Department of Chemical Engineering, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Prague, Czechia
| | - Jaroslav Kvíčala
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czechia
| | - Tomas Bystron
- Department of Inorganic Technology, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czechia
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czechia
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15
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Elhousseini Hilal M, Younus HA, Chaemchuen S, Dekyvere S, Zen X, He D, Park J, Han T, Verpoort F. Sacrificial ZnO nanorods drive N and O dual-doped carbon towards trifunctional electrocatalysts for Zn–air batteries and self-powered water splitting devices. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00119a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Integrated energy systems (IES) have attracted increasing attention in recent years.
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Affiliation(s)
- Mohamed Elhousseini Hilal
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- School of Materials Science and Engineering
| | - Hussein A. Younus
- Department of Chemistry
- Faculty of Science
- Fayoum University
- Fayoum 63514
- Egypt
| | - Somboon Chaemchuen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Sander Dekyvere
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- School of Materials Science and Engineering
| | - Xianci Zen
- Ghent University
- Incheon 406-840
- South Korea
- Hubei Engineering Research Center of RF-Microwave Technology and Application
- Wuhan University of Technology
| | - Daping He
- Hubei Engineering Research Center of RF-Microwave Technology and Application
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Jihae Park
- Ghent University
- Incheon 406-840
- South Korea
| | - Taejun Han
- Ghent University
- Incheon 406-840
- South Korea
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- School of Materials Science and Engineering
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16
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Wu Y, Pei F, Feng S, Wang Z, Lv X, Chen SM, Hao Q, Lei W. Potentiostatic oxidation of N-doped algae-derived carbon for P-nitrophenol sensitive determination. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Bird MA, Goodwin SE, Walsh DA. Best Practice for Evaluating Electrocatalysts for Hydrogen Economy. ACS APPLIED MATERIALS & INTERFACES 2020; 12:20500-20506. [PMID: 32282181 DOI: 10.1021/acsami.0c03307] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Screening new electrocatalysts is key to the development of new materials for next-generation energy devices such as fuel cells and electrolyzers. The counter electrodes used in such tests are often made from materials such as Pt and Au, which can dissolve during testing and deposit onto test electrocatalysts, resulting in inaccurate results. The most common strategy for preventing this effect is to separate the counter electrode from the test material using an ion-transporting Nafion membrane. Here, we use X-ray photoelectron spectroscopy, energy-dispersive X-ray analysis, mass spectrometry, and voltammetry to demonstrate the limitations of this approach during constant-current, extended stability testing of electrocatalysts for H2 evolution. We show that Nafion membranes cannot prevent contamination of carbon electrocatalysts by Pt and Au counter electrodes, leading to an apparent increase in the electrocatalytic activity of the carbon. We then demonstrate that carbon counter electrodes in undivided cells can contaminate and deactivate Pt and Au electrocatalysts for H2 evolution. We show that use of a setup composed of a glass frit separating a carbon counter electrode from the test electrocatalyst can prevent these effects. Finally, we discuss these phenomena using H2 evolution at MoS2 and at a K6[P2W18O62](H2O)14/carbon nanotube composite as test reactions.
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Affiliation(s)
- Matthew A Bird
- Nottingham Applied Materials and Interfaces Group GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, United Kingdom
| | - Sean E Goodwin
- Nottingham Applied Materials and Interfaces Group GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, United Kingdom
| | - Darren A Walsh
- Nottingham Applied Materials and Interfaces Group GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, United Kingdom
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18
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Rocha P, Vilas‐Boas Â, Fontes N, Geraldo D, Bento F. Evaluation of Polyphenols in Wine by Voltammetric Techniques with Screen Printed Carbon Electrodes. ELECTROANAL 2019. [DOI: 10.1002/elan.201900392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Pedro Rocha
- Centre of ChemistryUniversidade do Minho Braga Portugal
| | | | | | - Dulce Geraldo
- Centre of ChemistryUniversidade do Minho Braga Portugal
| | - Fátima Bento
- Centre of ChemistryUniversidade do Minho Braga Portugal
- Departamento de QuímicaUniversidade do Minho Campus de Gualtar 4710-057 Braga Portugal
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