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Theoretical and Cyclic Voltammetric Analysis of Asparagine and Glutamine Electrocatalytic Activities for Dopamine Sensing Applications. Catalysts 2023. [DOI: 10.3390/catal13010100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The molecular dynamics and density functional theory (DFT) can be applied to discriminate electrocatalyst’s electron transfer (ET) properties. It will be interesting to discriminate the ET properties of green electrocatalysts such as amino acids. Here, we have used DFT to compare the electrocatalytic abilities of asparagine and glutamine at the carbon paste electrode interface. Cyclic voltammetric results reveal that the electrocatalytic activities of aspargine are higher than glutamine for dopamine sensing. Dopamine requires less energy to bind with asparagine when compared to glutamine. Additionally, asparagine has higher electron-donating and accepting powers. Therefore, asparagine has a higher electrocatalytic activity than glutamine—the ability for the asparagine and glutamine carbon electrodes to detect dopamine in commercial injection, and to obtain satisfactory results. As a part of the work, we have also studied dopamine interaction with the modified carbon surface using molecular dynamics.
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Revanappa SK, Soni I, Siddalinganahalli M, Jayaprakash GK, Flores-Moreno R, Bananakere Nanjegowda C. A Fukui Analysis of an Arginine-Modified Carbon Surface for the Electrochemical Sensing of Dopamine. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6337. [PMID: 36143660 PMCID: PMC9506051 DOI: 10.3390/ma15186337] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Amino acid-modified carbon interfaces have huge applications in developing electrochemical sensing applications. Earlier reports suggested that the amine group of amino acids acted as an oxidation center at the amino acid-modified electrode interface. It was interesting to locate the oxidation centers of amino acids in the presence of guanidine. In the present work, we modeled the arginine-modified carbon interface and utilized frontier molecular orbitals and analytical Fukui functions based on the first principle study computations to analyze arginine-modified CPE (AMCPE) at a molecular level. The frontier molecular orbital and analytical Fukui results suggest that the guanidine (oxidation) and carboxylic acid (reduction) groups of arginine act as additional electron transfer sites on the AMCPE surface. To support the theoretical observations, we prepared the arginine-modified CPE (AMCPE) for the cyclic voltammetric sensing of dopamine (DA). The AMCPE showed excellent performance in detecting DA in blood serum samples.
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Affiliation(s)
- Santhosh Kumar Revanappa
- Department of Chemistry, University B.D.T. College of Engineering Visvesvaraya Technological University, Davangere 577004, India
| | - Isha Soni
- Laboratory of Quantum Electrochemistry, School of Advacned Chemical Sciences, Shoolini University, Solan 173229, India
| | - Manjappa Siddalinganahalli
- Department of Chemistry, University B.D.T. College of Engineering Visvesvaraya Technological University, Davangere 577004, India
| | - Gururaj Kudur Jayaprakash
- Laboratory of Quantum Electrochemistry, School of Advacned Chemical Sciences, Shoolini University, Solan 173229, India
- Department of Chemistry, Nitte Meenakshi Institute of Technology, Bangalore 560064, India
| | - Roberto Flores-Moreno
- Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara C.P. 44430, Mexico
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Kumar P, Soni I, Jayaprakash GK, Flores-Moreno R. Studies of Monoamine Neurotransmitters at Nanomolar Levels Using Carbon Material Electrodes: A Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5782. [PMID: 36013918 PMCID: PMC9415512 DOI: 10.3390/ma15165782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/14/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Neurotransmitters (NTs) with hydroxyl groups can now be identified electrochemically, utilizing a variety of electrodes and voltammetric techniques. In particular, in monoamine, the position of the hydroxyl groups might alter the sensing properties of a certain neurotransmitter. Numerous research studies using electrodes modified on their surfaces to better detect specific neurotransmitters when other interfering factors are present are reviewed to improve the precision of these measures. An investigation of the monoamine neurotransmitters at nanoscale using electrochemical methods is the primary goal of this review article. It will be used to determine which sort of electrode is ideal for this purpose. The use of carbon materials, such as graphite carbon fiber, carbon fiber micro-electrodes, glassy carbon, and 3D printed electrodes are only some of the electrodes with surface modifications that can be utilized for this purpose. Electrochemical methods for real-time detection and quantification of monoamine neurotransmitters in real samples at the nanomolar level are summarized in this paper.
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Affiliation(s)
- Pankaj Kumar
- Laboratory of Quantum Electrochemistry, School of Advanced Chemical Sciences, Shoolini University, Bajhol, Solan 173229, India
| | - Isha Soni
- Laboratory of Quantum Electrochemistry, School of Advanced Chemical Sciences, Shoolini University, Bajhol, Solan 173229, India
| | - Gururaj Kudur Jayaprakash
- Laboratory of Quantum Electrochemistry, School of Advanced Chemical Sciences, Shoolini University, Bajhol, Solan 173229, India
- Department of Chemistry, Nitte Meenakshi Institute of Technology, Bangalore 560064, India
| | - Roberto Flores-Moreno
- Departamento de Química, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Col. Olímpica, Guadalajara 44430, Mexico
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Hari Krishna R, Chandraprabha MN, Mamatha GM, Mallappa M, Kundagol D, Manjunatha C. Non-enzymatic Catalytic Oxidation of Glucose and Dual Mode Sensing by Fluorescence/Electrochemical Methods Using MO–GO Composites (MO = ZnO, CuO, NiO and Co3O4). Top Catal 2022. [DOI: 10.1007/s11244-022-01588-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Discotic anthraquinones as novel corrosion inhibitor for mild steel surface. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Pre-post redox electron transfer regioselectivity at the alanine modified nano graphene electrode interface. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139295] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Flores-Álvarez JM, Cortés-Arriagada D, Gómez-Sandoval Z, Jayaprakash GK, Ceballos-Magaña SG, Muñiz-Valencia R, Rojas-Montes JC, Pineda-Urbina K. Selective detection of Cu 2+ ions using a mercaptobenzothiazole disulphide modified carbon paste electrode and bismuth as adjuvant: a theoretical and electrochemical study. NEW J CHEM 2022. [DOI: 10.1039/d2nj02156k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bismuth adsorbed on the MBTS-modified surface facilitates the mass and charge transfer necessary for copper's selective sensing.
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Affiliation(s)
- José Manuel Flores-Álvarez
- Universidad de Colima, Facultad de Ciencias Químicas, Carr. Colima-Coquimatlán, km. 9, C. P. 28400 Coquimatlán, Colima, Mexico
| | - Diego Cortés-Arriagada
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, San Joaquín, Santiago, Chile
| | - Zeferino Gómez-Sandoval
- Universidad de Colima, Facultad de Ciencias Químicas, Carr. Colima-Coquimatlán, km. 9, C. P. 28400 Coquimatlán, Colima, Mexico
| | - Gururaj Kudur Jayaprakash
- Laboratory of Quantum Electrochemistry, School of Advanced Chemical Sciences, Shoolini University, Bajhol, Himachal Pradesh 173229, India
- Department of Chemistry, Nitte Meenakshi Institute of Technology, Bangalore, Karnataka, India
| | | | - Roberto Muñiz-Valencia
- Universidad de Colima, Facultad de Ciencias Químicas, Carr. Colima-Coquimatlán, km. 9, C. P. 28400 Coquimatlán, Colima, Mexico
- Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O’Higgins, Fabrica 1990, Segundo Piso, Santiago, Chile
| | - Jaime Cristobal Rojas-Montes
- Cátedras CONACyT-TecNM/I.T. Durango, Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Durango, Dgo, Mexico, C.P. 34080
- Maestría en Sistemas Ambientales, División de Estudios de Posgrado e Investigación, TecNM/I.T. Durango, Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Durango, Dgo, Mexico, C.P. 34080
| | - Kayim Pineda-Urbina
- Universidad de Colima, Facultad de Ciencias Químicas, Carr. Colima-Coquimatlán, km. 9, C. P. 28400 Coquimatlán, Colima, Mexico
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Effect of graphite oxide and exfoliated graphite oxide as a modifier for the voltametric determination of dopamine in presence of uric acid and folic acid. Sci Rep 2021; 11:24040. [PMID: 34911963 PMCID: PMC8674362 DOI: 10.1038/s41598-021-01328-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 10/08/2021] [Indexed: 11/23/2022] Open
Abstract
In the present work, exfoliated graphite oxide (E-GO) was prepared by sonicating graphite oxide (GO) (prepared by modified Hummer's and Offemam methods). Prepared GO and E-GO were characterized using infrared absorption spectroscopy, X-ray diffraction, and scanning electron microscopy. The electrocatalytic properties of GO and E-GO towards detection of dopamine (DA), uric acid (UA), and folic acid (FA) were investigated using cyclic voltammetry and differential pulse voltammetry. Our results revealed that E-GO has a slighter advantage over the GO as an electrode modifier for detection DA, UA, and FA, which might be ascribed to the good conductivity of E-GO when compared to the GO.
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9
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Quantum chemical studies and electrochemical investigations of pyrogallol red modified carbon paste electrode fabrication for sensor application. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106260] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Dual descriptor analysis of cetylpyridinium modified carbon paste electrodes for ascorbic acid sensing applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116348] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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A Short Review on Electrochemical Sensing of Commercial Dyes in Real Samples Using Carbon Paste Electrodes. ELECTROCHEM 2021. [DOI: 10.3390/electrochem2020020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Synthetic dyes are commonly used in food products like soft drinks, vegetable sauces, jellies, etc. Most artificial dyes can cause cancer, therefore it is very important to develop sensors to detect them in food samples. Voltammetric methods with carbon paste electrodes (CPEs) are promising for this purpose. However, modification of CPEs is necessary to detect the commercial dyes in food samples in the presence of interferents. In the current review, we have discussed the different previous research in which detection of dyes is performed in real samples with good detection limits. The current review will be helpful for readers who are interested in developing low-cost electrodes for the effective determination of dyes in commercial products like soft drinks and vegetable sauces.
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Flores-Álvarez J, Cortés-Arriagada D, Reyes-Gómez J, Gómez-Sandoval Z, Rojas‑Montes J, Pineda-Urbina K. 2-Mercaptobenzothiazole modified carbon paste electrode as a novel copper sensor: An electrochemical and computational study. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115208] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Analyzing electron transfer properties of ferrocene in gasoline by cyclic voltammetry and theoretical methods. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105116] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Chazaro-Ruiz LF, Olvera-Sosa M, Vidal G, Rangel-Mendez JR, Palestino G, Perez F, Zhang W. Synthesis of Bamboo-like Multiwall Carbon Nanotube-Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II). BIOSENSORS 2020; 10:bios10100147. [PMID: 33086517 PMCID: PMC7603206 DOI: 10.3390/bios10100147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/14/2020] [Accepted: 10/16/2020] [Indexed: 05/06/2023]
Abstract
A poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero charges, infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The possible use of the PAA-co-IA/NaOH/B-MWCNT hydrogel as an electrode modifier and pre-concentrator agent for Cd(II) sensing purposes was then evaluated using carbon paste electrodes via differential pulse voltammetry. The presence of the B-MWCNTs in the hydrogel matrix decreased its degree of swelling, stabilized the structure of the swollen gel, and favored the detection of 3 ppb Cd(II), which is comparable to the World Health Organization's allowable maximum value in drinking water. A calibration curve was obtained in the concentration range of 2.67 × 10-8 to 6.23 × 10-7 M (i.e., 3 and 70 ppb) to determine a limit of detection (LOD) of 19.24 μgL-1 and a sensitivity of 0.15 μC ppb-1. Also, the Zn(II), Hg(II), Pb(II) and Cu(II) ions interfered moderately on the determination of Cd(II).
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Affiliation(s)
- Luis F. Chazaro-Ruiz
- División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, Mexico; (G.V.); (J.R.R.-M.)
- Correspondence: (L.F.C.-R.); (W.Z.)
| | - Miguel Olvera-Sosa
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Manuel Nava No. 6, San Luis Potosí C.P. 78210, Mexico; (M.O.-S.); (G.P.)
- Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona 550, Lomas Segunda Sección, San Luis Potosí C.P. 78210, Mexico
| | - Gabriela Vidal
- División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, Mexico; (G.V.); (J.R.R.-M.)
| | - J. Rene Rangel-Mendez
- División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, Mexico; (G.V.); (J.R.R.-M.)
| | - Gabriela Palestino
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Manuel Nava No. 6, San Luis Potosí C.P. 78210, Mexico; (M.O.-S.); (G.P.)
- Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, Avenida Sierra Leona 550, Lomas Segunda Sección, San Luis Potosí C.P. 78210, Mexico
| | - Fatima Perez
- CONACYT—Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, Mexico;
| | - Wei Zhang
- College of Engineering, Bay Campus, Swansea University, Swansea SA1 8EN, UK
- Correspondence: (L.F.C.-R.); (W.Z.)
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15
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Electrochemical and quantum chemical studies of cetylpyridinium bromide modified carbon electrode interface for sensor applications. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113719] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Chenthattil Raril, Manjunatha JG, Ravishankar DK, Fattepur S, Siddaraju G, Nanjundaswamy L. Validated Electrochemical Method for Simultaneous Resolution of Tyrosine, Uric Acid, and Ascorbic Acid at Polymer Modified Nano-Composite Paste Electrode. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2020. [DOI: 10.3103/s1068375520040134] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Tajik S, Beitollahi H, Nejad FG, Safaei M, Zhang K, Van Le Q, Varma RS, Jang HW, Shokouhimehr M. Developments and applications of nanomaterial-based carbon paste electrodes. RSC Adv 2020; 10:21561-21581. [PMID: 35518767 PMCID: PMC9054518 DOI: 10.1039/d0ra03672b] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/27/2020] [Indexed: 01/22/2023] Open
Abstract
This review summarizes the progress that has been made in the past ten years in the field of electrochemical sensing using nanomaterial-based carbon paste electrodes. Following an introduction into the field, a first large section covers sensors for biological species and pharmaceutical compounds (with subsections on sensors for antioxidants, catecholamines and amino acids). The next section covers sensors for environmental pollutants (with subsections on sensors for pesticides and heavy metal ions). Several tables are presented that give an overview on the wealth of methods (differential pulse voltammetry, square wave voltammetry, amperometry, etc.) and different nanomaterials available. A concluding section summarizes the status, addresses future challenges, and gives an outlook on potential trends.
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Affiliation(s)
- Somayeh Tajik
- Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences Kerman 7616913555 Iran
| | - Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology Kerman Iran
| | - Fariba Garkani Nejad
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology Kerman Iran
| | - Mohadeseh Safaei
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology Kerman Iran
| | - Kaiqiang Zhang
- Jiangsu Key Laboratory of Advanced Organic Materials, Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 China
| | - Quyet Van Le
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University Šlechtitelů 27 783 71 Olomouc Czech Republic
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University Seoul 08826 Republic of Korea
| | - Mohammadreza Shokouhimehr
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University Seoul 08826 Republic of Korea
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Raril C, Manjunatha JG. Fabrication of novel polymer-modified graphene-based electrochemical sensor for the determination of mercury and lead ions in water and biological samples. J Anal Sci Technol 2020. [DOI: 10.1186/s40543-019-0194-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Abstract
Background
This paper presents the application of polyglycine-modified graphene paste electrode (PGMGPE) for the electrochemical detection of Hg (II) and Pb (II) ions in the water and biological samples.
Method
The developed electrode was characterized by field emission scanning electron microscopy. Electrochemical techniques such as cyclic voltammetry and differential pulse voltammetry were used to study the behavior of metal ions.
Results
The modification process improves the electrochemical behavior of heavy metal ions. The peak current varied linearly with the increase of the concentration leading to a detection limit of 6.6 μM (Hg (II)) and 0.8 μM (Pb (II)), respectively.
Conclusion
The developed electrode exhibits good sensitivity, selectivity, stability, and lower detection limit, and was successfully applied to the determination of heavy metal ions in water and biological samples with a good recovery range.
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Hareesha N, Manjunatha JG. Surfactant and polymer layered carbon composite electrochemical sensor for the analysis of estriol with ciprofloxacin. ACTA ACUST UNITED AC 2019. [DOI: 10.1080/14328917.2019.1684657] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Nagarajappa Hareesha
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, India
| | - Jamballi G Manjunatha
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, India
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Cyclic Voltammetric and Quantum Chemical Studies of a Poly(methionine) Modified Carbon Paste Electrode for Simultaneous Detection of Dopamine and Uric Acid. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7020024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fabrication of biocompatible electrodes for the investigation of catecholamines is a known challenge. In this work, methionine was chosen as a modifier for fabrication of a biocompatible carbon paste electrode by electropolymerization, through cyclic voltammetry. The electrochemical behavior of the poly(methionine) modified carbon paste electrode was characterized by cyclic voltammetry for simultaneous determination of dopamine (DA) and uric acid (UA) in a phosphate-buffered solution at pH 7.0. In the absence of an amino acid methionine layer, the bare carbon paste electrode exhibits rather poor voltammetric signals in DA and UA in the binary mixture, with oxidation potentials of DA and UA overlapping with each other. The poly(methionine) modified carbon paste electrode exhibits good catalytic activity with noticeably different oxidation potentials of DA and UA. The experimental results closely agree with the theoretical prediction based on a Fukui function complementary to the simulated electrostatic potential maps.
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21
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Laurinavičius L, Radzevič A, Ignatjev I, Niaura G, Vitkutė K, Širšinaitis T, Trusovas R, Pauliukaite R. Investigation of electrochemical polymerisation of L-lysine and application for immobilisation of functionalised graphene as platform for electrochemical sensing. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Jayaprakash GK, Flores-Moreno R. Regioselectivity in hexagonal boron nitride co-doped graphene. NEW J CHEM 2018. [DOI: 10.1039/c8nj03679a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The active electron transfer (ET) sites on the graphene surface can be controlled by hexagonal boron nitride (h-BN) doping.
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Affiliation(s)
| | - Roberto Flores-Moreno
- Departamento de Química
- Centro Universitario de Ciencias Exactas e Ingenierías
- Universidad Guadalajara
- Mexico
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