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Jiang YX, Rani A, Nguyen NT, Nguyen TMP, Chang CT. Electrochemical detection of oxytetracycline employing sugarcane carbon modified graphite electrode. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-31090-7. [PMID: 38030840 DOI: 10.1007/s11356-023-31090-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 11/13/2023] [Indexed: 12/01/2023]
Abstract
The present study used CeO2-Co3O4 quantum dots@porous carbon/multiwalled carbon nanotube (CeO2-Co3O4 QDs@PC/MWCNT/GE) composites to modify graphite electrodes to fabricate high-sensitivity electrochemical sensors to detect the presence of oxytetracycline (OTC). The quantum dots were made from waste sugarcane bagasse. The electrochemical analysis demonstrated the superior electrochemical performance of CeO2-Co3O4 QDs@PC/MWCNT/GE, with a peak current density of 1.276 mA/cm2. Electrochemical impedance spectroscopy (EIS) revealed lower impedance values for CeO2-Co3O4 QDs@PC/MWCNT/GE compared to other electrodes, indicating enhanced conductivity. The modified electrode exhibited an enlarged electrochemically active area, with values of 0.602 cm2, almost seven times that of the bare graphite electrode (0.079 cm2). The results showed that the CeO2-Co3O4 QDs@PC/MWCNT/GE had excellent performance for OTC detection, and its linear calibration range was 1.007 × 10-8 to 2.04 × 10-7 M (i.e., 0.005-0.1 ppm) and 1.007 × 10-6 to 1.209 × 10-4 M (i.e., 0.5-60 ppm). The limit of detection and limit of quantification were 1.23 nM (0.61 ppb) and 4.09 nM (2.03 ppb) (S/N = 3), respectively. The electrode demonstrated long-term stability for up to 7 weeks. This method provides a new way to prepare electrochemical sensors for OTC detection.
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Affiliation(s)
- Ya-Xuan Jiang
- Department of Environmental Engineering, National Ilan University, Yilan, 260, Taiwan ROC
- Department of Environmental Engineering, National Chung Hsing University, Hsinchu, 26047, Taiwan ROC
| | - Aishwarya Rani
- Department of Environmental Engineering, National Ilan University, Yilan, 260, Taiwan ROC
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 10617, Taiwan ROC
| | - Nhat-Thien Nguyen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608, Taiwan ROC
| | - Thi-Minh-Phuong Nguyen
- Faculty of Environmental and Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam
| | - Chang-Tang Chang
- Department of Environmental Engineering, National Ilan University, Yilan, 260, Taiwan ROC.
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Liu J, Zhong K, Feng Y, Feng L. Efficient cobalt hydroxide nanosheets for enhanced electrochemical sensing of Hg (II) ion. Chemosphere 2023; 334:139015. [PMID: 37224973 DOI: 10.1016/j.chemosphere.2023.139015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/12/2023] [Accepted: 05/21/2023] [Indexed: 05/26/2023]
Abstract
A sensitive electrochemical device was suggested via the modification of a simple graphite rod electrode (GRE) with cobalt hydroxide (Co(OH)2) nanosheets. After closed circuit process on the modified electrode, the anodic stripping voltammetry (ASV) technique was used for measuring of Hg(II). In optimal experimental conditions, the suggested assay depicted a linear response over a broad range in the range 0.25-30 μg L-1, with the lowest detection limit of 0.07 μg L-1. Besides good selectivity, the sensor also indicated excellent reproducibility with a relative standard deviation (RSD) value of 2.9%. Moreover, the Co(OH)2-GRE showed satisfactory sensing performance in real water samples with appropriate recovery values (96.0-102.5%). Additionally, possible interfering cations were examined, but no significant interference was found. By taking some merits such high sensitivity, remarkable selectivity and good precision, this strategy is expected to provide an efficient protocol for the electrochemical measuring of toxic Hg(II) in environmental matrices.
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Affiliation(s)
- Jiajun Liu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Kunyu Zhong
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yi Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
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Shayeh JS, Sefidbakht Y, Omidi M, Yazdian F, Tayebi L. Graphite/gold nanoparticles electrode for direct protein attachment: characterization and gas sensing application. Environ Sci Pollut Res Int 2020; 27:43202-43211. [PMID: 32734546 DOI: 10.1007/s11356-020-10286-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
In this work, graphite/gold nanoparticles (G/AuNPs) were synthesized through a facile chemical method, and its potential application for direct protein attachment for electrochemical detection of carbon monoxide (CO) was investigated. The preparation of G/AuNPs electrodes was optimized by synthesizing the nanoparticles in different concentration of HAuCl4.3H2O at various temperatures. The G/AuNPs electrode was subsequently modified by four types of mercaptopropionic acid, including 1-mercaptopropionic, 3-mercaptopropionic, 6-mercaptopropionic, and 11-mercaptopropionic acid, to achieve the best structure for protein attachment. Visible absorption and electrochemical studies showed that 3-mercaptopropionic acid possesses the best performance regarding the electrical conductivity between electrode and protein redox center. The cyclic voltammetry results revealed that the modified electrode has an appropriate performance for CO detection at very low concentrations while keeping a linear response. The limit of detection for the modified electrode was calculated to be about 0.2 ppb. Finally, the interactions of cytochrome C and carbon monoxides were simulated using molecular dynamics (MD), and the effect of protein conformation changes on the electrochemical signal was thoroughly examined. The simulation results suggested that the proposed electrochemical sensor has an acceptable performance for the detection of CO due to less fluctuation of amino acids near the protein chain in the presence of CO molecules.
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Affiliation(s)
- Javad Shabani Shayeh
- Protein Research Center, Shahid Beheshti University, G. C., Velenjak, Tehran, Iran.
| | - Yahya Sefidbakht
- Protein Research Center, Shahid Beheshti University, G. C., Velenjak, Tehran, Iran
| | - Meisam Omidi
- Protein Research Center, Shahid Beheshti University, G. C., Velenjak, Tehran, Iran.
| | - Fatemeh Yazdian
- Faculty of New Science and Technology, University of Tehran, Tehran, Iran
| | - Lobat Tayebi
- Department of Developmental Sciences, Marquette University School of Dentistry, Milwaukee, WI, 53233, USA
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
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Huang KZ, Zhang H. Galvanic oxidation processes (GOPs): An effective direct electron transfer approach for organic contaminant oxidation. Sci Total Environ 2020; 743:140828. [PMID: 32758851 DOI: 10.1016/j.scitotenv.2020.140828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
The activation of peroxymonosulfate (PMS) for organic contaminant oxidation usually relies on the formation of reactive oxygen species (ROSs). However, the ubiquitous anions and natural organic matter can easily scavenge ROSs and/or PMS, resulting in lower efficiencies and/or the formation of toxic byproducts. Relying on the unique long-distance electron transfer property, the recently developed Galvanic Oxidation Process (GOP) successfully achieved bisphenol A (BPA) degradation when BPA and PMS were physically separated in two reactors. In this study, we systematically investigated the performance of GOP at different PMS or BPA concentrations, pH, and ionic strength (IS) in both PMS and BPA solutions. The kinetic modeling employing the Langmuir-Hinshelwood model at different BPA concentrations suggested that although BPA and PMS were physically separated, the oxidation of the adsorbed BPA and reduction of the adsorbed PMS still followed a similar mechanism to that in traditional heterogeneous catalytic processes. The anions in the target water showed little impact on BPA degradation; higher IS enhanced the solution conductivity but inhibited BPA and electrode interactions, resulting in increased and then decrease BPA degradation rate. The electrodes presented high stability with a rate increase of 12% after 13 times of uses, and their hydration significantly facilitated BPA degradation but reduced the current by decreasing the potential difference between the anode and cathode. The graphite sheet itself without catalyst coating was also capable of shuttling electrons, while the use of a graphite fiber anode increased the BPA degradation by near 100% because of the larger surface area. The developed continuous stirred-tank reactor coupled with GOP (CSTR-GOP) achieved stable BPA degradation in less than 35 min and its scaling up is promising for future applications.
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Affiliation(s)
- Kuan Z Huang
- Department of Civil and Environmental Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Huichun Zhang
- Department of Civil and Environmental Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
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Kee PE, Lan JC, Yim HS, Tan JS, Chow YH, Ng HS. Efficiency of Ionic Liquids-Based Aqueous Two-phase Electrophoresis for Partition of Cytochrome c. Appl Biochem Biotechnol 2020; 191:376-86. [PMID: 31907777 DOI: 10.1007/s12010-019-03202-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 12/05/2019] [Indexed: 10/25/2022]
Abstract
Cytochrome c is a small water-soluble protein that is abundantly found in the mitochondrial intermembrane space of microorganism, plants and mammalians. Ionic liquids (ILs)-based aqueous two-phase electrophoresis system (ATPES) was introduced in this study to investigate the partition efficiency of cytochrome c to facilitate subsequent development of two-phase electrophoresis for the separation of cytochrome c from microbial fermentation. The 1-Hexyl-3-methylimidazolium bromide, (C6mim)Br and potassium citrate salt were selected as the phase-forming components. Effects of phase composition; position of electrodes; pH and addition of neutral salt on the partition efficiency of cytochrome c in the ATPES were evaluated. Highest partition coefficient (K = 179.12 ± 0.82) and yield of cytochrome c in top phase (YT = 99.63% ± 0.00) were recorded with IL/salt ATPES composed of 30% (w/w) (C6mim)Br and 20% (w/w) potassium citrate salt of pH 7 and 3.0% (w/w) NaCl addition with anode at the bottom phase and cathode at the top phase. The SDS-PAGE profile revealed that cytochrome c with a molecular weight of 12 kDa was preferably partitioned to the IL-rich top phase. Present findings suggested that the single-step ATPES is a potential separation approach for the recovery of cytochrome c from microbial fermentation. Graphical Abstract.
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Piotrowska P, Łazicka M, Palińska-Saadi A, Paterczyk B, Kowalewska Ł, Grzyb J, Maj-Żurawska M, Garstka M. Electrochemical characterization of LHCII on graphite electrodes - Potential-dependent photoactivation and arrangement of complexes. Bioelectrochemistry 2019; 127:37-48. [PMID: 30690422 DOI: 10.1016/j.bioelechem.2019.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 01/14/2019] [Accepted: 01/14/2019] [Indexed: 01/25/2023]
Abstract
Light-dependent electrochemical properties of the light harvesting complexes of Photosystem II (LHCII) and the corresponding interactions with screen-printed graphite electrodes (GEs) are determined. No exogenous soluble redox mediators are used. LHCII isolated from spinach leaves are immobilized on GE by physical adsorption and through interactions with glutaraldehyde. Importantly, the insertion of LHCII into the pores of a GE is achieved by subjecting the electrode to specific potentials. Both trimeric and aggregated forms of LHCII located within the graphite layer retain their native structures. Voltammetric current peaks centred at ca. -230 and + 50 mV vs. Ag/AgCl (+94 and + 374 mV vs. NHE) limit the investigation of the reduction and oxidation processes of immobilized LHCII. An anodic photocurrent is generated in the LHCII-GE proportional to light intensity and can reach a value of 150 nA/cm2. Light-dependent charge separation in LHCII followed by electron transfer to the GE occurs only at potentials of above -200 mV vs. Ag/AgCl (+124 mV vs. NHE). Our results illustrate the importance of the structural proximity of LHCII and GE for photocurrent generation.
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Affiliation(s)
- Paulina Piotrowska
- Faculty of Biology, Department of Metabolic Regulation, Institute of Biochemistry, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Magdalena Łazicka
- Faculty of Biology, Department of Metabolic Regulation, Institute of Biochemistry, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Adriana Palińska-Saadi
- Bioanalytical Laboratory, Biological and Chemical Research Centre, University of Warsaw, Zwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Bohdan Paterczyk
- Faculty of Biology, Laboratory of Electron and Confocal Microscopy, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Łucja Kowalewska
- Faculty of Biology, Department of Plant Anatomy and Cytology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Joanna Grzyb
- Faculty of Biotechnology, Department of Biophysics, University of Wroclaw, F. Joliot-Curie 14a, 50-383 Wroclaw, Poland; Institute of Physics of the Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Magdalena Maj-Żurawska
- Bioanalytical Laboratory, Biological and Chemical Research Centre, University of Warsaw, Zwirki i Wigury 101, 02-089 Warsaw, Poland; Faculty of Chemistry, Laboratory of Basics of Analytical Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Maciej Garstka
- Faculty of Biology, Department of Metabolic Regulation, Institute of Biochemistry, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
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Mahmoudi L, Zelder F, Kissner R. Determination of the formal redox potentials of the cyanhaemoglobin/cyanmethaemoglobin and the myoglobin/metmyoglobin couples at neutral pH. Bioelectrochemistry 2018; 120:83-6. [PMID: 29197256 DOI: 10.1016/j.bioelechem.2017.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/23/2017] [Accepted: 11/23/2017] [Indexed: 11/22/2022]
Abstract
Determination of a representative formal redox potential of the Fe(II)/Fe(III) redox couple in cyanhaemoglobin, at pH=7 and related to the state in solution, was the objective of this work. It was achieved at low concentrations of the protein (5μM) to circumvent undesired adsorption. Square-wave voltammetry instead of classical cyclic voltammetry was applied because this method is more sensitive and provides information on the formal redox potential and reversibility, even for rapid processes. We obtained E°'=-0.12±0.01V for cyanhaemoglobin and E°'=-0.10±0.01V, vs. SHE, for myoglobin in comparison. These values differ by only 20mV because the two Fe(II)/Fe(III) redox centres are embedded in closely resembling chemical environments. The small difference is probably owed to the additional axially coordinating cyanide ligand in cyanmethaemoglobin which slightly favours the Fe(III) state in the haem macrocycle.
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Khataee A, Sajjadi S, Hasanzadeh A, Vahid B, Joo SW. One-step preparation of nanostructured martite catalyst and graphite electrode by glow discharge plasma for heterogeneous electro-Fenton like process. J Environ Manage 2017; 199:31-45. [PMID: 28525809 DOI: 10.1016/j.jenvman.2017.04.095] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/19/2017] [Accepted: 04/29/2017] [Indexed: 06/07/2023]
Abstract
Natural Martite ore particles and graphite were modified by alternating current (AC) glow discharge plasma to form nanostructured catalyst and cathode electrode for using in the heterogeneous-electro Fenton-like (Het-EF-like) process. The performance of the plasma-treated martite (PTM) and graphite electrode (PTGE) was studied for the treatment of paraquat herbicide in a batch system. 85.78% degradation efficiency for 20 mg L-1 paraquat was achieved in the modified process under desired operational conditions (i.e. current intensity of 300 mA, catalyst amount of 1 g L-1, pH = 6, and background electrolyte (Na2SO4) concentration of 0.05 mol L-1) which was higher than the 41.03% for the unmodified one after 150 min of treatment. The ecofriendly modification of the martite particles and the graphite electrode, no chemical needed, low leached iron and milder operational pH were the main privileges of plasma utilization. Moreover, the degradation efficiency through the process was not declined after five repeated cycles at the optimized conditions, which proved the stability of the nanostructured PTM and PTGE in the long-term usage. The archived results exhibit this method is the first example of high efficient, cost-effective, and environment-friendly method for generation of nanostructured samples.
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Affiliation(s)
- Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Materials Science and Nanotechnology Engineering, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey.
| | - Saeed Sajjadi
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Aliyeh Hasanzadeh
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Behrouz Vahid
- Department of Chemical Engineering, Tabriz Branch, Islamic Azad University, 51579-44533 Tabriz, Iran
| | - Sang Woo Joo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, South Korea.
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Kijjanapanich P, Kijjanapanich P, Annachhatre AP, Esposito G, Lens PNL. Spontaneous electrochemical treatment for sulfur recovery by a sulfide oxidation/vanadium(V) reduction galvanic cell. J Environ Manage 2015; 149:263-270. [PMID: 25463589 DOI: 10.1016/j.jenvman.2014.10.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 10/17/2014] [Accepted: 10/22/2014] [Indexed: 06/04/2023]
Abstract
Sulfide is the product of the biological sulfate reduction process which gives toxicity and odor problems. Wastewaters or bioreactor effluents containing sulfide can cause severe environmental impacts. Electrochemical treatment can be an alternative approach for sulfide removal and sulfur recovery from such sulfide rich solutions. This study aims to develop a spontaneous electrochemical sulfide oxidation/vanadium(V) reduction cell with a graphite electrode system to recover sulfide as elemental sulfur. The effects of the internal and external resistance on the sulfide removal efficiency and electrical current produced were investigated at different pH. A high surface area of the graphite electrode is required in order to have as less internal resistance as possible. In this study, graphite powder was added (contact area >633 cm(2)) in order to reduce the internal resistance. A sulfide removal efficiency up to 91% and electrical charge of more than 400 C were achieved when using five graphite rods supplemented with graphite powder as the electrode at an external resistance of 30 Ω and a sulfide concentration of 250 mg L(-1).
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Affiliation(s)
- Pimluck Kijjanapanich
- UNESCO-IHE Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands; Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Pairoje Kijjanapanich
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Ajit P Annachhatre
- Environmental Engineering and Management, Asian Institute of Technology, PO Box 4, Klongluang, Pathumthani 12120, Thailand
| | - Giovanni Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio, 43 03043 Cassino (FR), Italy
| | - Piet N L Lens
- UNESCO-IHE Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands
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