1
|
Xhanari K, Finšgar M. Recent advances in the modification of electrodes for trace metal analysis: a review. Analyst 2023; 148:5805-5821. [PMID: 37697964 DOI: 10.1039/d3an01252b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
This review paper summarizes the research published in the last five years on using different compounds and/or materials as modifiers for electrodes employed in trace heavy metal analysis. The main groups of modifiers are identified, and their single or combined application on the surface of the electrodes is discussed. Nanomaterials, film-forming substances, and polymers are among the most used compounds employed mainly in the modification of glassy carbon, screen-printed, and carbon paste electrodes. Composites composed of several compounds and/or materials have also found growing interest in the development of modified electrodes. Environmentally friendly substances and natural products (mainly biopolymers and plant extracts) have continued to be included in the modification of electrodes for trace heavy metal analysis. The main analytical performance parameters of the modified electrodes as well as possible interferences affecting the determination of the target analytes, are discussed. Finally, a critical evaluation of the main findings from these studies and an outlook discussing possible improvements in this area of research are presented.
Collapse
Affiliation(s)
- Klodian Xhanari
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, 2000 Maribor, Slovenia.
- University of Tirana, Faculty of Natural Sciences, Boulevard "Zogu I", 1001 Tirana, Albania
| | - Matjaž Finšgar
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, 2000 Maribor, Slovenia.
| |
Collapse
|
2
|
Altahan MF, Nower M. AutoGIS processing for site selection for solar pond development as efficient water treatment plants in Egypt. Sci Rep 2023; 13:17009. [PMID: 37813897 PMCID: PMC10562386 DOI: 10.1038/s41598-023-44047-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023] Open
Abstract
The increasing demand for renewable and environmentally friendly energy sources is a top priority for many countries around the world. It is obvious that renewable solar energy will help to meet most of the energy demand in the coming years. A solar pond is a huge Salt artificial Lake that serves as a solar energy collection system. However, site selection is a critical factor that affects the effectiveness and lifetime of a solar pond. Here, we present an innovative methodology for site selection based on three environmental factors, including direct solar irradiance (DNI), temperature, and wind speed. Our approach uses Python programming and clustering analysis with several libraries, including Pandas, Geopandas, Rasterio, Osgeo, and Sklearn, to analyse and process data collected over a 30-year period from NASA power. This method was applied to the geographic boundaries of Egypt, but the methods can be applied to any spatial context if the same dataset is available. The results show that Egypt has a potential land area of 500 km2 suitable for solar ponds construction along the border with Sudan throughout the year, including 2000 km2 in winter (between January and March), 800 km2 in spring (between April and June), 900 km2 in summer (between July and September), and the largest area of 3700 km2 (between October and December), most of which is located in the south of the Eastern Desert and around the Nile River. Notably, the northwestern region, close to the Mediterranean Sea on the border with Libya, exhibits suitability for solar pond development, with consistent performance throughout the year. Our results provide an efficient way for GIS and data processing and could be useful for implementing new software to find the best location for solar ponds development. This could be beneficial for those interested in investing in renewable energy and using solar ponds as an efficient water treatment plant.
Collapse
Affiliation(s)
- Mahmoud Fatehy Altahan
- Central Laboratory for Environmental Quality Monitoring (CLEQM), National Water Research Center (NWRC), El-Qanater El-Khairia, 13621, Egypt.
| | - Mohamed Nower
- Water Management Research Institute (WMRI), National Water Research Center (NWRC), El-Qanater El-Khairia, 13621, Egypt.
| |
Collapse
|
3
|
Altahan MF, Ali AG, Hathoot AA, Azzem MA. Modified electrode decorated with silver as a novel non-enzymatic sensor for the determination of ammonium in water. Sci Rep 2023; 13:16861. [PMID: 37803033 PMCID: PMC10558464 DOI: 10.1038/s41598-023-43616-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 09/26/2023] [Indexed: 10/08/2023] Open
Abstract
Ammonium is an essential component of the nitrogen cycle, which is essential for nitrogen cycling in ecosystems. On the other hand, ammonium pollution in water poses a great threat to the ecosystem and human health. Accurate and timely determination of ammonium content is of great importance for environmental management and ensuring the safety of water supply. Here we report a highly sensitive electrochemical sensor for ammonium in water samples. The modified electrode is based on the incorporation of silver nitrate (AgNO3) into a carbon paste embedded with 1-aminoanthraquinone and supported by multi-walled carbon nanotubes, which are commercially available. A potential of 0.75 V is applied to the modified electrode, followed by activation in hydrochloric acid. The modified electrode was used for square wave voltammetry of ammonium in water in the potential range of - 0.4-0.2 V. The performance of ammonium analysis was determined in terms of square wave frequency, square wave amplitude and concentration of electrolyte solution (sodium sulphate). The calculation of the surface area according to the Randles-Sevcik equation resulted in the largest surface area for the Ag/pAAQ/MWCNTs/CPE. The modified electrode exhibited a linear range of 5-100 µM NH4+ in 0.1 M Na2SO4 with a detection limit of 0.03 µM NH4+ (3σ). In addition, the modified electrode showed high precision with an RSD value of 9.93% for 10 repeated measurements. No interfering effect was observed at twofold and tenfold additive concentrations of foreign ions. Good recoveries were obtained in the analysis of tap and mineral water after spiking with a concentration of ammonium ions.
Collapse
Affiliation(s)
- Mahmoud Fatehy Altahan
- Central Laboratory for Environmental Quality Monitoring, National Water Research Centre, El-Qanater El-Khairia, 13621, Egypt.
| | - Asmaa Galal Ali
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom, 32511, Egypt.
| | - Abla Ahmed Hathoot
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom, 32511, Egypt
| | - Magdi Abdel Azzem
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom, 32511, Egypt
| |
Collapse
|
4
|
Altahan MF, AbdelAzzem M. A new approach for determination of orthophosphate based on mixed valent molybdenum oxide/poly 1,2-diaminoanthraquinone in seawater. Sci Rep 2023; 13:13634. [PMID: 37604877 PMCID: PMC10442350 DOI: 10.1038/s41598-023-40479-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 08/10/2023] [Indexed: 08/23/2023] Open
Abstract
Orthophosphate is an essential macronutrient in natural water that controls primary production and strongly influences the global ocean carbon cycle. Electrochemical determination of orthophosphate is highly recommended because electrochemistry provides the simplest means of determination. Here the determination of orthophosphate based on the formation of a phosphomolybdate complex is reported. Mixed-valent molybdenum oxide (MoxOy) was prepared by cyclic voltammetry on poly-1,2-diaminoanthraquinone (1,2-DAAQ), which was performed by cyclic voltammetry on the surface of a glassy carbon electrode under pre-optimized conditions for the thickness of the modified electrode layers. The proposed modified electrode was used for square-wave voltammetry of orthophosphate ions under pre-optimized square-wave parameters (i.e., frequency and amplitude) in strongly acidic medium (pH < 1). The linear range was 0.05-4 µM with a limit of quantification (LOD) of 0.0093 µM with no effect on two peaks due to cross interference from silicate. Furthermore, MoxOy/PDAAQ shows good reproducibility with a relative standard deviation (RSD) of 2.17% for the peak at 0.035 V and 3.56% for the peak at 0.2 V. Real seawater samples were also analyzed for PO43- analysis by UV spectrophotometry and the results were compared with the measurement results of our proposed electrode, with good recoveries obtained.
Collapse
Affiliation(s)
- Mahmoud Fatehy Altahan
- Central Laboratory for Environmental Quality Monitoring, National Water Research Center, El-Qanater El-Khairia, 13621, Egypt.
| | - Magdi AbdelAzzem
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom, 32511, Egypt
| |
Collapse
|
5
|
Keramari V, Karastogianni S, Girousi S. New Prospects in the Electroanalysis of Heavy Metal Ions (Cd, Pb, Zn, Cu): Development and Application of Novel Electrode Surfaces. Methods Protoc 2023; 6:60. [PMID: 37489427 PMCID: PMC10366748 DOI: 10.3390/mps6040060] [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: 05/10/2023] [Revised: 06/10/2023] [Accepted: 06/21/2023] [Indexed: 07/26/2023] Open
Abstract
The detection of toxic heavy metal ions, especially cadmium (Cd), lead (Pb), zinc (Zn), and copper (Cu), is a global problem due to ongoing pollution incidents and continuous anthropogenic and industrial activities. Therefore, it is important to develop effective detection techniques to determine the levels of pollution from heavy metal ions in various media. Electrochemical techniques, more specifically voltammetry, due to its properties, is a promising method for the simultaneous detection of heavy metal ions. This review examines the current trends related to electrode formation and analysis techniques used. In addition, there is a reference to advanced detection methods based on the nanoparticles that have been developed so far, as well as formation with bismuth and the emerging technique of screen-printed electrodes. Finally, the advantages of using these methods are highlighted, while a discussion is presented on the benefits arising from nanotechnology, as it gives researchers new ideas for integrating these technologies into devices that can be used anywhere at any time. Reference is also made to the speciation of metals and how it affects their toxicity, as it is an important subject of research.
Collapse
Affiliation(s)
- Vasiliki Keramari
- Analytical Chemistry Laboratory, School of Chemistry, Faculty of Sciences, 54124 Thessaloniki, Greece
| | - Sophia Karastogianni
- Analytical Chemistry Laboratory, School of Chemistry, Faculty of Sciences, 54124 Thessaloniki, Greece
| | - Stella Girousi
- Analytical Chemistry Laboratory, School of Chemistry, Faculty of Sciences, 54124 Thessaloniki, Greece
| |
Collapse
|
6
|
Shalaby EA, Beltagi AM, Hathoot AA, Azzem MA. Simultaneous voltammetric sensing of Zn 2+, Cd 2+, and Pb 2+ using an electrodeposited Bi-Sb nanocomposite modified carbon paste electrode. RSC Adv 2023; 13:7118-7128. [PMID: 36875874 PMCID: PMC9978880 DOI: 10.1039/d3ra00168g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/22/2023] [Indexed: 03/06/2023] Open
Abstract
A sensor for detecting Zn2+, Cd2+, and Pb2+ ions simultaneously based on the square wave anodic stripping response at a bismuth antimony (Bi-Sb) nanocomposite electrode was developed. The electrode was prepared in situ by electrodepositing bismuth and antimony on the surface of a carbon-paste electrode (CPE) while also reducing the analyte metal ions. The structure and performance of the Bi-Sb/CPE electrode were studied using scanning electron microscopy, X-ray diffraction, electrochemical impedance spectroscopy, and cyclic voltammetry. Operational conditions including the concentration of Sb and Bi, the type of electrolyte, pH, and preconcentration conditions were optimized. The linear ranges were determined to be 5-200 μg L-1 for Zn2+, 1-200 μg L-1 for Cd2+, and 1-150 μg L-1 for Pb2+ with the optimized parameters. The limits of detection were 1.46 μg L-1, 0.27 μg L-1, and 0.29 μg L-1 for Zn2+, Cd2+, and Pb2+, respectively. Furthermore, the Bi-Sb/CPE sensor is capable of selective determination of the target metals in the presence of the common cationic and anionic interfering species (Na+, K+, Ca2+, Mg2+, Fe3+, Mn2+, Co2+, Cl-, SO4 2- and HCO3 -). Finally, the sensor was successfully applied to the simultaneous determination of Zn2+, Cd2+, and Pb2+ in a variety of real-world water samples.
Collapse
Affiliation(s)
- E A Shalaby
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University Shebin El-Kom 32511 Egypt
| | - A M Beltagi
- Department of Chemistry, Faculty of Science, Kafrelsheikh University Kafrelsheikh 33516 Egypt
| | - A A Hathoot
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University Shebin El-Kom 32511 Egypt
| | - M Abdel Azzem
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University Shebin El-Kom 32511 Egypt
| |
Collapse
|
7
|
Al-Qasmi N, Al-Gethami W, Alhashmialameer D, Ismail SH, Sadek AH. Evaluation of Green-Synthesized Cuprospinel Nanoparticles as a Nanosensor for Detection of Low-Concentration Cd(II) Ion in the Aqueous Solutions by the Quartz Crystal Microbalance Method. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6240. [PMID: 36143550 PMCID: PMC9502900 DOI: 10.3390/ma15186240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/26/2022] [Accepted: 09/01/2022] [Indexed: 06/16/2023]
Abstract
Cd(II) heavy metal is an extremely dangerous hazardous material for both humans and the environment. Its high toxicity is the reason behind the examination of new techniques for detecting very small concentrations of Cd(II). Recently, Quartz Crystal Microbalance (QCM) has been one of the techniques that have been widely used to detect trace heavy metal ions in solutions. It is a simple, inexpensive, portable, and sensitive gravimetric sensor due to its quality sensitivity lowest to nanograms. In this work, Cuprospinel nanoparticles were synthesized through the green synthesis approach using Psidium guajava L. leaf extract as a reducing agent, which is the first scientific description to report the preparation of these nanoparticles by this method. Subsequently, the synthesized nanoparticles were subjected to the characterization of their crystallinity, structure, and morphology by the XRD, N2 adsorption-desorption, zeta potential, DLS, AFM, SEM, and TEM analyzers. The prepared Cuprospinel nanoparticles were evaluated as a nanosensor for the detection of the very low concentration of Cd(II) ions in aqueous solutions using the QCM technique. The results of the characterization proved that the Cuprospinel nanoparticles have formed in the nanoscale with sub-spherical shapes and particles size ranging from 20 to 80 nm. The BET surface area and pore size analysis revealed that the synthesized Cuprospinel nanoparticles possess a surface area of 47.3 m2/g, an average pore size of 1.5 nm, and a micropore volume of 0.064 cc/g. The QCM results demonstrated the success of the Cuprospinel nanoparticles sensor in detecting the tiny amounts of Cd(II) ions in the aqueous solutions with concentrations reaching about 3.6 ng/L.
Collapse
Affiliation(s)
- Noha Al-Qasmi
- Chemistry Department, Faculty of Science, Taif University, Al-Hawiah, Taif City P.O. Box 11099, Saudi Arabia
| | - Wafa Al-Gethami
- Chemistry Department, Faculty of Science, Taif University, Al-Hawiah, Taif City P.O. Box 11099, Saudi Arabia
| | - Dalal Alhashmialameer
- Chemistry Department, Faculty of Science, Taif University, Al-Hawiah, Taif City P.O. Box 11099, Saudi Arabia
| | - Sameh H. Ismail
- Faculty of Nanotechnology for Postgraduate Studies, Sheikh Zayed Campus, Cairo University, 6th October City, Giza 12588, Egypt
| | - Ahmed H. Sadek
- Faculty of Nanotechnology for Postgraduate Studies, Sheikh Zayed Campus, Cairo University, 6th October City, Giza 12588, Egypt
- Zewail City of Science, Technology and Innovation, 6th October City, Giza 12578, Egypt
| |
Collapse
|
8
|
Lalmalsawmi J, Sarikokba, Tiwari D, Kim DJ. Simultaneous detection of Cd2+ and Pb2+ by differential pulse anodic stripping voltammetry: Use of highly efficient novel Ag0(NPs) decorated silane grafted bentonite material. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
9
|
Electrochemical Sensing of Pb2+ and Cd2+ Ions with the Use of Electrode Modified with Carbon-Covered Halloysite and Carbon Nanotubes. Molecules 2022; 27:molecules27144608. [PMID: 35889475 PMCID: PMC9324300 DOI: 10.3390/molecules27144608] [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: 06/03/2022] [Revised: 07/08/2022] [Accepted: 07/16/2022] [Indexed: 02/01/2023] Open
Abstract
A novel voltammetric method for the sensitive and selective determination of cadmium and lead ions using screen-printed carbon electrodes (SPCEs) modified with carbon-deposited natural halloysite (C_Hal) and multi-walled carbon nanotubes (MWCNTs) was developed. The electrochemical properties of the proposed sensor were investigated by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV), while the morphology and structure were established by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). A two-factorial central composite design (CCD) was employed to select the composition of the nanocomposite modifying the electrode surface. The optimal measuring parameters of differential pulse anodic stripping voltammetry (DPASV) used for quantitative analysis were established with the Nelder–Mead simplex method. In the analytical investigation of Cd(II) and Pb(II) ions by DPASV, the MWCNTs/C_Hal/Nafion/SPCE exhibited a linear response in the concentration range of 0.1–10.0 µmol L−1 (for both ions) with a detection limit of 0.0051 and 0.0106 µmol L−1 for Pb(II) and Cd(II), respectively. The proposed sensor was successfully applied for the determination of metal ions in different natural water and honey samples with recovery values of 96.4–101.6%.
Collapse
|
10
|
Patawanich P, Petdum A, Sirirak J, Chatree K, Charoenpanich A, Panchan W, Setthakarn K, Kamkaew A, Sooksimuang T, Maitarad P, Wanichacheva N. Highly selective zinc(II) triggered “Turn-ON” [5]helicene-based fluorescence sensor: its application in liver and brain cells imaging. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119710] [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]
|
11
|
Electrochemical determination of Pb2+ and Cd2+ with a poly(pyrrole-1-carboxylic acid) modified electrode. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116221] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
12
|
Ali AG, Altahan MF, Beltagi AM, Hathoot AA, Abdel-Azzem M. Voltammetric and impedimetric determinations of selenium(iv) by an innovative gold-free poly(1-aminoanthraquinone)/multiwall carbon nanotube-modified carbon paste electrode. RSC Adv 2022; 12:4988-5000. [PMID: 35425500 PMCID: PMC8981389 DOI: 10.1039/d1ra07588h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/28/2022] [Indexed: 11/21/2022] Open
Abstract
Selenite (Se4+), a significant source of water pollution above the permissible limits, is considered a valuable metal by environmentalists. In this study, we described a novel electrochemical sensor that utilized a carbon paste electrode (CPE) that was modified using multiwall carbon nanotubes (MWCNTs) and poly(1-aminoanthraquinone) (p-AAQ) for finding Se4+ in water samples. Electrochemical quantification of Se4+ depends on the formation of a selective complex (piaselenol) with p-AAQ. In this work, we prepared a CPE modified by physical embedding of MWCNTs and 1-aminoanthraquione (AAQ), while the polymer film was formed by anodic polymerization of AAQ by applying a constant potential of 0.75 V in 0.1 M HCl for 20 s followed by cyclic voltammetry (CV) from −0.2 to 1.4 V for 20 cycles. The modified CPE was used for differential pulse voltammetry (DPV) of Se4+ in 0.1 M H2SO4 from 0 to 0.4 V with a characteristic peak at 0.27 V. Further, the proposed sensor was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electrochemical impedance spectroscopy (EIS). The analytical conditions regarding the electrode performance and voltammetric measurements were optimized, with the accumulation time and potential, supporting electrolyte, differential-pulse period/time, and amplitude. The EIS results indicated that the p-AAQ/MWCNTs-modified CPE sensor (p-AAQ/MWCNTs/CPE) that also exhibited low charge-transfer resistance (Rct) toward the anodic stripping of Se4+, exhibited good analytical performance toward different concentrations of Se4+ in a linear range of 5–50 μg L−1 Se4+ with a limit of determination (LOD) of 1.5 μg L−1 (3σ). Furthermore, differential-pulse voltammetry was employed to determine different concentrations of Se4+ in a linear range of 1–50 μg L−1 Se4+, and an LOD value of 0.289 μg L−1 was obtained. The proposed sensor demonstrated good precision (relative standard deviation = 4.02%) at a Se4+ concentration of 5 μg L−1. Moreover, the proposed sensor was applied to analyze Se4+ in wastewater samples that were spiked with Se, and it achieved good recovery values. The selenite ion is quantified electrochemically by selective complexation with poly(1-aminoanthraquione) to give a piaselenol complex on a modified p-AAQ/MWCNTs/CPE sensor.![]()
Collapse
Affiliation(s)
- Asmaa Galal Ali
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom 32511, Egypt
| | - Mahmoud Fatehy Altahan
- Central Laboratory for Environmental Quality Monitoring, National Water Research Center, El-Qanater El-Khairia 13621, Egypt
| | - Amr Mohamed Beltagi
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Abla Ahmed Hathoot
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom 32511, Egypt
| | - Magdi Abdel-Azzem
- Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom 32511, Egypt
| |
Collapse
|
13
|
Shalaby EA, Beltagi AM, Hathoot AA, Azzem MA. Development of a Sensor Based on poly(1,2‐diaminoanthraquinone) for Individual and Simultaneous Determination of Mercury (II) and Bismuth (III). ELECTROANAL 2021. [DOI: 10.1002/elan.202100315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- E. A. Shalaby
- Electrochemistry Laboratory Chemistry Department Faculty of Science Menoufia University Shebin El-Kom 32511 Egypt
| | - A. M. Beltagi
- Department of Chemistry Faculty of Science Kafrelsheikh University Kafrelsheikh 33516 Egypt
| | - A. A. Hathoot
- Electrochemistry Laboratory Chemistry Department Faculty of Science Menoufia University Shebin El-Kom 32511 Egypt
| | - M. Abdel Azzem
- Electrochemistry Laboratory Chemistry Department Faculty of Science Menoufia University Shebin El-Kom 32511 Egypt
| |
Collapse
|
14
|
Konował E, Modrzejewska‐Sikorska A, Kopaczewska AM, Karbowska B. New Electrode Material GCE/AgNPs‐LS/Hg Based on Nanosilver Produced with the Use of Biopolymers. ELECTROANAL 2021. [DOI: 10.1002/elan.202100031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Emilia Konował
- Poznan University of Technology Faculty of Chemical Technology Institute of Chemistry and Technical Electrochemistry Berdychowo 4 60-965 Poznan Poland
| | - Anna Modrzejewska‐Sikorska
- Poznan University of Technology Faculty of Chemical Technology Institute of Chemistry and Technical Electrochemistry Berdychowo 4 60-965 Poznan Poland
| | - Anna Maria Kopaczewska
- Poznan University of Technology Faculty of Chemical Technology Institute of Chemistry and Technical Electrochemistry Berdychowo 4 60-965 Poznan Poland
| | - Bożena Karbowska
- Poznan University of Technology Faculty of Chemical Technology Institute of Chemistry and Technical Electrochemistry Berdychowo 4 60-965 Poznan Poland
| |
Collapse
|
15
|
Valera D, Fernández L, González G, Romero H, Martínez O, Espinoza-Montero PJ. Simultaneous quantification of Cd(II) and Pb(II) in surface marine sediments using Ag-Hg and Ag-Bi nanoalloys glassy carbon modified electrodes. Heliyon 2021; 7:e07120. [PMID: 34136693 PMCID: PMC8178089 DOI: 10.1016/j.heliyon.2021.e07120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/08/2021] [Accepted: 05/17/2021] [Indexed: 12/02/2022] Open
Abstract
The evaluation of glassy carbon (GC) electrodes modified with a Nafion (Nf) film and doped with nanoalloys (Nys) deposits of Ag-Hg and Ag-Bi and their application to determination of Cd (II) and Pb(II) in marine sediments, is described. Deposited Ag-Hg and AgBi Nys have a size of approximately ~80 nm dispersed and embedded inside the booths of the Nf net, while other of them remained on Nf net surface. For the AgBiNysNf-GC electrode, a detection limit (DL), 3 s criterion, slightly higher than for the AgHgNysNf-GC modified electrode was obtained. Accuracy of measurements was asserted by comparison with quantification of Cd and Pb in three sets of marine sediments samples previously analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES). The values of the standard deviation and the coefficients of variation are very low, and also comparable between the different determinations.
Collapse
Affiliation(s)
- Danny Valera
- Universidad Simón Bolívar, Departamento de Química, Caracas, 1080-A, Venezuela
| | - Lenys Fernández
- Pontificia Universidad Católica del Ecuador, Escuela de Ciencias Químicas, Quito, 17-01-2184, Ecuador
| | - Gema González
- Yachay Tech University, School of Physical Sciences and Nanotechnology, Urcuqui, 100119, Ecuador
- Instituto Venezolano de Investigaciones Científicas, Centro de Ing. de Materiales y Nanotecnología, Caracas, 1020-A, Venezuela
| | - Hugo Romero
- Universidad Técnica de Machala, Facultad de Ciencias Químicas y de la Salud, Machala, 070151, Ecuador
| | - Omar Martínez
- Universidad Técnica de Machala, Facultad de Ciencias Químicas y de la Salud, Machala, 070151, Ecuador
| | | |
Collapse
|
16
|
Huang L, Ito Y, Fujita T, Ge X, Zhang L, Zeng H. Bismuth/Porous Graphene Heterostructures for Ultrasensitive Detection of Cd (II). MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5102. [PMID: 33198230 PMCID: PMC7697896 DOI: 10.3390/ma13225102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/31/2020] [Accepted: 11/09/2020] [Indexed: 12/23/2022]
Abstract
Heavy metals pollution is one of the key problems of environment protection. Electrochemical methods, particularly anodic stripping voltammetry, have been proven a powerful tool for rapid detection of heavy metal ions. In the present work, a bismuth modified porous graphene (Bi@PG) electrode as an electrochemical sensor was adopted for the detection of heavy metal Cd2+ in an aqueous solution. Combining excellent electronic properties in sensitivity, peak resolution, and high hydrogen over-potential of bi-continuous porous Bi with the large surface-area and high conductivity on PG, the Bi@PG electrode exhibited excellent sensing ability. The square wave anodic stripping voltammetry response showed a perfect liner range of 10-9-10-8 M with a correlation coefficient of 0.9969. The limit of detection (LOD) and the limit of quantitation (LOQ) are calculated to be 0.1 and 0.34 nM with a sensitivity of 19.05 μA·nM-1, which is relatively excellent compared to other carbon-based electrodes. Meanwhile, the Bi@PG electrode showed tremendous potential in composite detection of multifold heavy metals (such as Pb2+ and Cd2+) and wider linear range.
Collapse
Affiliation(s)
- Luyi Huang
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.H.); (H.Z.)
| | - Yoshikazu Ito
- Institute of Applied Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai, Tsukuba 305-8571, Japan;
| | - Takeshi Fujita
- School of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami City, Kochi 782-8502, Japan;
| | - Xingbo Ge
- The Center of New Energy Materials and Technology, School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Ling Zhang
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.H.); (H.Z.)
| | - Heping Zeng
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.H.); (H.Z.)
| |
Collapse
|
17
|
Sivan S, Shankar SS, N S, Kandambath Padinjareveetil A, Pilankatta R, Kumar VBS, Mathew B, George B, Makvandi P, Černík M, Padil VVT, Varma RS. Fabrication of a Greener TiO 2@Gum Arabic-Carbon Paste Electrode for the Electrochemical Detection of Pb 2+ Ions in Plastic Toys. ACS OMEGA 2020; 5:25390-25399. [PMID: 33043219 PMCID: PMC7542840 DOI: 10.1021/acsomega.0c03781] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/14/2020] [Indexed: 05/25/2023]
Abstract
A novel greener methodology is reported for the synthesis of titanium dioxide (TiO2) nanoparticles (NPs) using gum Arabic (Acacia senegal) and the characterization of the ensuing TiO2 NPs by various techniques such as X-ray diffraction (XRD), Fourier transform infrared, Raman spectroscopy, scanning electron microscopy-energy dispersive X-ray, transmission electron microscopy (TEM), high resolution-TEM, and UV-visible spectroscopy. The XRD analysis confirmed the formation of TiO2 NPs in the anatase phase with high crystal purity, while TEM confirmed the size to be 8.9 ± 1.5 nm with a spherical morphology. The electrode for the electrochemical detection of Pb2+ ions was modified by a carbon paste fabricated using the synthesized TiO2 NPs. Compared to the bare electrode, the fabricated electrode exhibited improved electro-catalytic activity toward the reduction of Pb2+ ions. The detection limit, quantification limit, and the sensitivity of the developed electrode were observed by using differential pulse voltammetry to be 506 ppb, 1.68 ppm, and 0.52 ± 0.01 μA μM-1, respectively. The constructed electrode was tested for the detection of lead content in plastic toys.
Collapse
Affiliation(s)
| | - Sarojini Sharath Shankar
- Department
of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye 671316, India
| | - Sajina N
- Department
of Chemistry, School of Physical Sciences, Central University of Kerala, Periye 671316 India
| | | | - Rajendra Pilankatta
- Department
of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye 671316, India
| | - V. B. Sameer Kumar
- Department
of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye 671316, India
| | - Beena Mathew
- School
of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills, Kottayam 686560, Kerala, India
| | - Bini George
- Department
of Chemistry, School of Physical Sciences, Central University of Kerala, Periye 671316 India
| | - Pooyan Makvandi
- Chemistry
Department, Faculty of Science, Shahid Chamran
University of Ahvaz, Ahvaz 6153753843, Iran
- Institute
for Polymers, Composites, and Biomaterials (IPCB), National Research Council (CNR), Naples 80125, Italy
| | - Miroslav Černík
- Department
of Nanomaterials in Natural Sciences, Institute for Nanomaterials,
Advanced Technologies and Innovation (CXI), Technical University of Liberec (TUL), Studentská 1402/2, Liberec 1 461 17, Czech
Republic
| | - Vinod V. T. Padil
- Department
of Nanomaterials in Natural Sciences, Institute for Nanomaterials,
Advanced Technologies and Innovation (CXI), Technical University of Liberec (TUL), Studentská 1402/2, Liberec 1 461 17, Czech
Republic
| | - Rajender S. Varma
- Regional
Centre of Advanced Technologies and Materials, Palacký University in Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech
Republic
| |
Collapse
|