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Saddique Z, Saeed M, Faheem M, Bajwa SZ, Mujahid A, Afzal A. Core-shell niobium(v) oxide@molecularly imprinted polythiophene nanoreceptors for transformative, real-time creatinine analysis. NANOSCALE ADVANCES 2024; 6:3644-3654. [PMID: 38989513 PMCID: PMC11232539 DOI: 10.1039/d4na00300d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 05/23/2024] [Indexed: 07/12/2024]
Abstract
Creatinine, a byproduct of muscle metabolism, is typically filtered by the kidneys. Deviations from normal concentrations of creatinine in human saliva serve as a crucial biomarker for renal diseases. Monitoring these levels becomes particularly essential for individuals undergoing dialysis and those with kidney conditions. This study introduces an innovative disposable point-of-care (PoC) sensor device designed for the prompt detection and continuous monitoring of trace amounts of creatinine. The sensor employs a unique design, featuring a creatinine-imprinted polythiophene matrix combined with niobium oxide nanoparticles. These components are coated onto a screen-printed working electrode. Thorough assessments of creatinine concentrations, spanning from 0 to 1000 nM in a redox solution at pH 7.4 and room temperature, are conducted using cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). The devised sensor exhibits a sensitivity of 4.614 μA cm-2 nM-1, an impressive trace level limit of detection at 34 pM, and remarkable selectivity for creatinine compared to other analytes found in human saliva, such as glucose, glutamine, urea, tyrosine, etc. Real saliva samples subjected to the sensor reveal a 100% recovery rate. This sensor, characterized by its high sensitivity, cost-effectiveness, selectivity, and reproducibility, holds significant promise for real-time applications in monitoring creatinine levels in individuals with kidney and muscle-related illnesses.
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Affiliation(s)
- Zohaib Saddique
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus Lahore 54590 Pakistan
| | - Maleeha Saeed
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus Lahore 54590 Pakistan
| | - Muhammad Faheem
- School of Chemistry and Chemical Engineering, Jiangsu University Zhenjiang Jiangsu 212013 P. R. China
| | - Sadia Z Bajwa
- National Institute for Biotechnology and Genetic Engineering PO Box 577, Jhang Road Faisalabad 38000 Pakistan
| | - Adnan Mujahid
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus Lahore 54590 Pakistan
| | - Adeel Afzal
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus Lahore 54590 Pakistan
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2
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Zaman I, Liaqat A, Athar S, Mujahid A, Afzal A. Electrocatalytic FeFe 2O 4 embedded, spermine-imprinted polypyrrole (Fe/MIPpy) nanozymes for cancer diagnosis and prognosis. J Mater Chem B 2024; 12:5898-5906. [PMID: 38779948 DOI: 10.1039/d4tb00190g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Developing synthetic materials, with enzyme-like molecular recognition capabilities, as functional receptors in electronic or electrochemical devices for the timely diagnosis of major diseases is a great challenge. Herein, we present the development of Fe/MIPpy nanozymes, characterized as enzyme-like artificial receptors, for the precise and non-invasive monitoring of cancer biomarkers in aqueous solutions and human saliva. Through the integration of PVA-stabilized FeFe2O4 nanocrystals in a molecularly imprinted conducting polypyrrole matrix, the Fe/MIPpy nanozymes demonstrate 424 nA cm-2 nM-1 sensitivity and 220 pM detection limit. Charge-transfer mechanisms, Fe/MIPpy-spermine interactions, and the principle of spermine recognition are investigated by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The disposable Fe/MIPpy sensor operates wirelessly and offers rapid and remote quantification of spermine, making it a promising material for the development of cost-effective tools for non-invasive cancer diagnosis and prognosis.
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Affiliation(s)
- Iqra Zaman
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore, 54590, Pakistan.
| | - Amna Liaqat
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore, 54590, Pakistan.
| | - Sadaf Athar
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore, 54590, Pakistan.
| | - Adnan Mujahid
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore, 54590, Pakistan.
| | - Adeel Afzal
- Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore, 54590, Pakistan.
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3
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Mirzaei Karazan Z, Roushani M, Jafar Hoseini S. Simultaneous electrochemical sensing of heavy metal ions (Zn 2+, Cd 2+, Pb 2+, and Hg 2+) in food samples using a covalent organic framework/carbon black modified glassy carbon electrode. Food Chem 2024; 442:138500. [PMID: 38252987 DOI: 10.1016/j.foodchem.2024.138500] [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: 10/30/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024]
Abstract
In this study, for the first time, a selective electrochemical sensor by glassy carbon electrode (GCE) modified with the covalent organic framework (COF) and carbon black (CB) was introduced and applied to simultaneous sensing of Zn2+, Cd2+, Pb2+, and Hg2+ via differential pulse anodic stripping voltammetry (DPASV). The COF is supplied through a condensation reaction between melamine and trimesic acid. The COF and CB, which are used to modify the GCE surface, increase electrochemical activity. The linearity to determine ions was achieved as Zn2+: 0.009-1100 nM, Cd2+: 0.005-1100 nM, Pb2+: 0.003-1100 nM, and Hg2+: 0.001-1100 nM. Besides, the detection limits for Zn2+, Cd2+, Pb2+, and Hg2+ have obtained 0.003, 0.002, 0.001 and 0.0003 nM, respectively. The CB-COF/GCE was applied to simultaneously measure the ions in food samples. For validation, atomic absorption spectrometry (AAS) was applied to measure the amount of target metal ions as a standard method in real samples.
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Affiliation(s)
- Zahra Mirzaei Karazan
- Department of Chemistry, Faculty of Sciences, Ilam University, Ilam P. O. BOX. 69315-516, Iran
| | - Mahmoud Roushani
- Department of Chemistry, Faculty of Sciences, Ilam University, Ilam P. O. BOX. 69315-516, Iran.
| | - S Jafar Hoseini
- Prof. Rashidi Laboratory of Organometallic Chemistry & Material Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 7194684795, Iran
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4
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Barton B, Ullah N, Koszelska K, Smarzewska S, Ciesielski W, Guziejewski D. Reviewing neonicotinoid detection with electroanalytical methods. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37923-37942. [PMID: 38769264 PMCID: PMC11189332 DOI: 10.1007/s11356-024-33676-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 05/10/2024] [Indexed: 05/22/2024]
Abstract
Neonicotinoids, as the fastest-growing class of insecticides, currently account for over 25% of the global pesticide market. Their effectiveness in controlling a wide range of pests that pose a threat to croplands, home yards/gardens, and golf course greens cannot be denied. However, the extensive use of neonicotinoids has resulted in significant declines in nontarget organisms such as pollinators, insects, and birds. Furthermore, the potential chronic, sublethal effects of these compounds on human health remain largely unknown. To address these pressing issues, it is crucial to explore and understand the capabilities of electrochemical sensors in detecting neonicotinoid residues. Surprisingly, despite the increasing importance of this topic, no comprehensive review article currently exists in the literature. Therefore, our proposed review aims to bridge this gap by providing a thorough analysis of the use of electrochemical methods for neonicotinoid determination. In this review article, we will delve into various aspects of electrochemical analysis, including the influence of electrode materials, employed techniques, and the different types of electrode mechanisms utilized. By synthesizing and analysing the existing research in this field, our review will offer valuable insights and guidance to researchers, scientists, and policymakers alike.
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Affiliation(s)
- Bartłomiej Barton
- Department of Instrumental Analysis, University of Lodz, Pomorska 163, 90-236, Lodz, Poland.
| | - Nabi Ullah
- Department of Instrumental Analysis, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Kamila Koszelska
- Department of Instrumental Analysis, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Sylwia Smarzewska
- Department of Instrumental Analysis, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Witold Ciesielski
- Department of Instrumental Analysis, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Dariusz Guziejewski
- Department of Instrumental Analysis, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
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5
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Derikvand H, Tahmasebi N, Barzegar S. Construction of a direct Z-scheme Cs 3Bi 2Cl 9/g-C 3N 4 heterojunction composite for efficient photocatalytic degradation of various pollutants in water: Performance, kinetics and degradation mechanism. CHEMOSPHERE 2024; 355:141879. [PMID: 38570050 DOI: 10.1016/j.chemosphere.2024.141879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/22/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
The use of emerging composite materials has been booming to remove environmental pollutants. The aim of this research is to develop a new composite based on Cs3Bi2Cl9 perovskite and graphitic carbon nitride (g-C3N4) to investigate the photocatalytic performance under visible light irradiation. To achieve this, we produce the Cs3Bi2Cl9/g-C3N4 heterojunctions through a simple self-assembly synthesis. The as-synthesized composites are characterized using XRD, FTIR, FESEM, TEM, BET and EDX techniques. The photocatalytic performance of Cs3Bi2Cl9/g-C3N4 is examined in the degradation of various water contaminants, including 4-nitrophenol (4-NP), tetracycline antibiotic (TC), methylene blue (MB) and methyl orange (MO). The experimental results indicate the superior photocatalytic performance of the composites in the degradation of pollutants compared to pure Cs3Bi2Cl9 and g-C3N4. The 10% Cs3Bi2Cl9/g-C3N4 composite achieves the optimal degradation efficiency of 100, 92, 98.7, and 85.1% of 4-NP, TC, MB, and MO, respectively. This superior photocatalytic activity attributes to improved optical and electrochemical properties, including enhanced absorption ability, narrowing band gap, promoted separation efficiency of photogenerated carriers, and a high redox potential, which is confirmed by UV-vis DRS, PL, EIS, and CV analyses. The 10% Cs3Bi2Cl9/g-C3N4 composite also demonstrates high photocatalytic stability after four consecutive cycles. Radical trapping tests show that superoxide radicals (•O2-), holes (h+), and hydroxyl radicals (•OH) contribute to the photocatalytic process. Based on the obtained data, a direct Z-scheme heterojunction mechanism is proposed. Overall, this research offers a new stable photocatalyst with excellent prospect for photocatalytic applications.
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Affiliation(s)
- Hamed Derikvand
- Department of Physics, Jundi-Shapur University of Technology, Dezful, Iran
| | - Nemat Tahmasebi
- Department of Physics, Jundi-Shapur University of Technology, Dezful, Iran.
| | - Shahram Barzegar
- Department of Chemistry, Jundi-Shapur University of Technology, Dezful, Iran
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6
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Yurtsever F, Jiang W, Mudalige T. An Automated Electroanalytical Method for the Drug Release Profiling of Liposomal Doxorubicin HCl Formulations. J Pharm Sci 2024; 113:791-797. [PMID: 38072115 DOI: 10.1016/j.xphs.2023.11.035] [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: 09/20/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 02/20/2024]
Abstract
Liposomes have emerged as a drug delivery system for various chemotherapeutics providing enhanced bioavailability and reduced toxicity. In vitro drug release profiling of liposomal formulations is one of the essential tests for the premarket approval and post market quality control. We developed an automated electroanalytical method for drug release profiling of liposomal doxorubicin formulation. In this electroanalytical method, square wave voltammetry mode was selected to determine the released drug, the only redox-active analyte, by measuring the current at the pulsed potential ranges. Therefore, no separation from liposomal encapsulated doxorubicin is needed. This electroanalytical method provided a continuous drug release measurement for 24 h. The drug release increased as the release media pH and temperature increased. At 37 °C, the drug release increased from 7 % to 40 % when the pH increased from 5.5 to 7.4, In addition, at pH 6.5, as the temperature increased from 37 °C to 52 °C, total drug release increased by more than two-fold. Complete drug release (more than 80 %) was obtained at pH 6.5 and 52 °C in less than 3 h. The brand name and the two generic formulations showed similar drug release profile in all experimental conditions. This method is an alternative to traditional methods which require separation steps such as dialysis or solid phase extraction to quantitate released doxorubicin. This method may be further applied in the in vitro release testing of other liposomal formulations containing redox-active drug substances, e.g., liposomes encapsulating daunorubicin.
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Affiliation(s)
- Fatma Yurtsever
- Arkansas Laboratory, Office of Regulatory Affairs, U.S. Food and Drug Administration, Jefferson, AR 72079, USA
| | - Wenlei Jiang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, 20993, USA.
| | - Thilak Mudalige
- Arkansas Laboratory, Office of Regulatory Affairs, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
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7
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Yu T, Cui J, Chen S. Electrochemical detection of the neurotransmitter glutamate and the effect of the psychotropic drug riluzole on its oxidation response. Anal Bioanal Chem 2024; 416:1707-1716. [PMID: 38363306 DOI: 10.1007/s00216-024-05175-2] [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: 11/21/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/17/2024]
Abstract
Glutamate is the main excitatory neurotransmitter in the brain and plays a leading role in degenerative diseases, such as motor neuron diseases. Riluzole is a glutamate regulator and a therapeutic drug for motor neuron diseases. In this work, the interaction between glutamate and riluzole was studied using cyclic voltammetry and square-wave voltammetry at a glassy carbon electrode (GCE). It was shown that glutamate underwent a two-electron transfer reaction on the GCE surface, and the electrochemical detection limits of glutamate and riluzole were 483 μmol/L and 11.47 μmol/L, respectively. The results confirm that riluzole can promote the redox reaction of glutamate. This work highlights the significance of electrochemical technology in the sensing detection of the interaction between glutamate and related psychotropic drugs.
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Affiliation(s)
- Tao Yu
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Jingjie Cui
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China.
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA, 95064, USA
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8
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M. Visagamani A, Harb M, Kaviyarasu K, Muthukrishnaraj A, Ayyar M, A. Alzahrani K, Althomali RH, Althobaiti SA. Electrochemical Detection of 4-Nitrophenol Using a Novel SrTiO 3/Ag/rGO Composite. ACS OMEGA 2023; 8:42479-42491. [PMID: 38024753 PMCID: PMC10652362 DOI: 10.1021/acsomega.3c05111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 10/15/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023]
Abstract
In this study, an eco-friendly strategy was used to prepare a novel SrTiO3/Ag/rGO composite. A SrTiO3/Ag/rGO composite-modified screen-printed carbon electrode (SPCE) was applied for the electrochemical detection of 4-nitrophenol. A simple ultrasonic method with an ultrasonic frequency of 20 kHz was used for the synthesis of SrTiO3/Ag/rGO composite material. The obtained SrTiO3/Ag/rGO composite was characterized by X-ray diffraction, Fourier transform infrared, Raman spectroscopy, field emission electron microscopy, and UV-visible spectroscopy. Electrochemical impedance spectroscopy was used to determine the electrical conductivity of the SrTiO3/Ag/rGO composite. The electrochemical properties of the modified electrode were studied using cyclic voltammetry as well as linear sweep voltammetry techniques. In comparison to SrTiO3/SPCE, SrTiO3/Ag/SPCE, and SrTiO3/rGO/SPCE electrodes, SrTiO3/Ag/rGO/SPCE demonstrates a considerable increase in 4-nitrophenol redox peak current. At optimum conditions, a large linear response range of 0.1-1000 M, with a relatively low limit of detection (0.03 M), outperforms the previously published modified electrode for 4-nitrophenol. Moreover, the SrTiO3/Ag/rGO/SPCE electrode-based 4-nitrophenol sensor is distinguished by good selectivity, high stability, and repeatability. Furthermore, SrTiO3/Ag/rGO/SPCE contributed to the detection of 4-nitrophenol in river water and drinking water with the recovery range from 97.5 to 98.7%. The experimental finding was supported by density functional theory calculation.
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Affiliation(s)
- Arularasu M. Visagamani
- Department
of Electronic Engineering, Chang Gung University, Taoyuan City 33302, Taiwan (R.O.C)
| | - Moussab Harb
- QSARLab
Ltd., Trzy Lipy 3, Gdańsk 80-172, Poland
| | - Kasinathan Kaviyarasu
- UNESCO-UNISA
Africa Chair in Nanosciences/Nanotechnology Laboratories, College
of Graduate Studies, University of South
Africa (UNISA), Muckleneuk
Ridge, Pretoria 0003, South Africa
- Nanosciences
African Network (NANOAFNET), Materials Research Group (MRG), iThemba LABORATORIES-National Research Foundation
(NRF), 1 Old Faure Road, Somerset West, Western Cape Province 7129, South Africa
| | - Appusamy Muthukrishnaraj
- Department
of Science and Humanities (Chemistry), Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu 641 021, India
| | - Manikandan Ayyar
- Department
of Chemistry, Karpagam Academy of Higher
Education, Coimbatore, Tamil Nadu 641 021, India
- Centre
for Material Chemistry, Karpagam Academy
of Higher Education, Coimbatore, Tamil Nadu 641 021, India
- Department
of Chemistry, Bharath Institute of Higher
Education and Research (BIHER), Chennai, Tamil Nadu 600
073, India
| | - Khalid A. Alzahrani
- Chemistry
Department, Faculty of Science King Abdulaziz
University, Jeddah 21589, Saudi Arabia
| | - Raed H. Althomali
- Department
of Chemistry, Prince Sattam Bin Abdulaziz
University, College of Arts and Science, Wadi Al-Dawasir 11991, Saudi Arabia
| | - Saja Abdulrahman Althobaiti
- Department of Chemistry, College of Arts
and Science, Prince Sattam Bin Abdulaziz
University, Wadi Addawasir 18510, Saudi Arabia
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Sundaresan R, Mariyappan V, Chen SM, Ramachandran B, Paulsamy R, Rasu R. Construction of an electrochemical sensor towards environmental hazardous 4-nitrophenol based on Nd(OH) 3-embedded VSe 2 nanocomposite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-25688-0. [PMID: 36781666 DOI: 10.1007/s11356-023-25688-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
The toxicity of 4-nitrophenol (4-NP) is one of the most common threats to the environment; therefore, developing a simple and sensitive analytical method to detect 4-NP is crucial. In this study, we prepared the Nd(OH)3/VSe2 nanocomposite using the simple hydrothermally assisted ultrasonication method and it was used to detect the 4-NP. Different characterization techniques were used to investigate the morphological and chemical compositions of Nd(OH)3/VSe2 nanocomposite. All of these investigations revealed that Nd(OH)3 nanoparticles were finely dispersed on the surface of the VSe2 nanosheet. The electrical conductivity of our prepared samples was evaluated by the electrochemical impedance spectroscopic technique. The CV and DPV methods were used to explore the electrochemical activity of 4-NP at the Nd(OH)3/VSe2/GCE sensor which exhibited a wide linear range (0.001 to 640 µM), low limit of detection (0.008 µM), and good sensitivity (0.41 µA µM-1 cm-2), respectively. Additionally, Nd(OH)3/VSe2/GCE sensor was tested in water samples for the detection of 4-NP, which exhibited good recovery results. The Nd(OH)3/VSe2 electrode material is a novel one for the electrochemical sensor field, and the obtained overall results also proved that our proposed material is an active material for sensor applications.
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Affiliation(s)
- Ruspika Sundaresan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Vinitha Mariyappan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
| | - Balaji Ramachandran
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Raja Paulsamy
- Department of Chemistry, Vivekananda College of Arts and Science, Agastheeswaram, Kanyakumari, 629 004, Tamil Nadu, India
| | - Ramachandran Rasu
- Department of Chemistry, The Madura College, Tamil Nadu, Vidya Nagar, Madurai, 625 011, India
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10
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Shahbakhsh M, Saravani H, Dusek M, Poupon M. Study of the one-step in situ growth synthesis of Cu-Pic coordination polymer and Cu-BTC MOF and their performances for detection of 4-Nitrophenol. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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11
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Noureldin HAM, Abdel-Aziz AM, Mabrouk MM, Saad AHK, Badr IHA. Green and cost-effective voltammetric assay for spiramycin based on activated glassy carbon electrode and its applications to urine and milk samples. RSC Adv 2023; 13:844-852. [PMID: 36686907 PMCID: PMC9809205 DOI: 10.1039/d2ra06768d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/15/2022] [Indexed: 01/05/2023] Open
Abstract
A simple, cost-effective, and efficient differential pulse voltammetric (DPV) assay for monitoring spiramycin adipate (SPA) in its dosage forms, urine, and milk samples at an activated glassy carbon electrode (GCE) was developed. GCE was electrochemically activated by anodization at a high positive voltage (2.5 V). The activated glassy carbon electrode (AGCE) was surface characterized, optimized, and utilized for the electrochemical assay of SPA. The electrochemical behavior of the AGCEs was investigated using cyclic voltammetry (CV) which shows a remarkable increase in the anodic peak of SPA in comparison with GCE. This behavior reflects a remarkable increase in the electrocatalytic oxidation of SPA at AGCE. The impacts of various parameters such as scan rate, accumulation time, and pH were investigated. The analytical performance of the activated glassy carbon electrodes was studied utilizing DPV. Under optimum conditions, the oxidation peak current exhibited two linear ranges of 80 nm to 0.8 μM and 0.85-300 μM with a lower limit of detection (LOD) of 20 nM. The developed assay exhibited high sensitivity, excellent repeatability, and good selectivity. Additionally, the developed SPA-sensitive modified GCE was successfully applied for SPA assay in its pharmaceutical dosage form and diluted biological fluids as well, with satisfactory recovery results which correlated well with the results obtained using spectrophotometry.
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Affiliation(s)
- Hind A. M. Noureldin
- Department of Analytical Chemistry, Faculty of Pharmacy, Badr University in CairoCairoEgypt
| | - Ali M. Abdel-Aziz
- Department of Chemistry, Faculty of Science, Ain Shams UniversityCairoEgypt
| | - Mokhtar M. Mabrouk
- Department of Analytical Chemistry, Faculty of Pharmacy, Tanta UniversityTantaEgypt
| | - Amira H. K. Saad
- Department of Analytical Chemistry, Faculty of Pharmacy, Tanta UniversityTantaEgypt
| | - Ibrahim H. A. Badr
- Department of Chemistry, Faculty of Science, Ain Shams UniversityCairoEgypt,Department of Chemistry, Faculty of Science, Galala UniversitySuezEgypt
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12
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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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