1
|
Karunattu Sajan M, Kirubalan MR, Rajendran AS, Natesan ALF. Exploring the effective adsorption of polystyrene microplastics from aqueous solution with magnetically separable nickel/reduced graphene oxide (Ni/rGO) nanocomposite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:38099-38116. [PMID: 38795296 DOI: 10.1007/s11356-024-33726-8] [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: 10/17/2023] [Accepted: 05/15/2024] [Indexed: 05/27/2024]
Abstract
Microplastics (MPs) are a potential threat to both humans and aquatic environment as they serve as carriers of various contaminants necessitating the development of reliable, efficient, and ecofriendly techniques to remove MPs from water. In this study, reduced graphene oxide (rGO) magnetized using nickel nanoparticles was utilized as a potent adsorbent for the effective removal of microplastics from water. The synthesized nickel/reduced graphene oxide (Ni/rGO) nanocomposite was characterized by X-ray diffraction (XRD), Raman spectra, vibrating sample magnetometer (VSM), scanning electron microscopy-energy-dispersive X-ray analysis (SEM-EDX), thermogravimetric analysis, and Brunauer-Emmett Teller (BET) analysis. Magnetic Ni/rGO nanocomposite exhibited significant adsorption capability for polystyrene (PS) microspheres allowing the formation of PS-Ni/rGO complex which can be easily separated out using a magnet. The SEM images of PS-Ni/rGO complex confirmed the adsorption of PS microspheres onto the nano adsorbent due to hydrophobic interaction. The adsorbent demonstrated a maximum adsorption capacity of 1250 mg/g. The analysis of isotherm and kinetic models demonstrated that the adsorption mechanism conformed to the Langmuir isotherm and followed pseudo second order kinetics. This study paves a new pathway for the application of magnetically modified reduced graphene oxide for the expedient removal of microplastics from water with the ease of separation using a magnet. The adsorbent was recycled and reused for three times.
Collapse
Affiliation(s)
- Merija Karunattu Sajan
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu, 603203, India
| | - Mani Rahulan Kirubalan
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu, 603203, India
| | - Annie Sujatha Rajendran
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu, 603203, India
| | - Angeline Little Flower Natesan
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu, 603203, India.
| |
Collapse
|
2
|
Suchanek M, Paczosa-Bator B, Piech R. A Novel Composite Voltammetric Sensor Based on Yttria-Stabilized Zirconia Doped with Neodymium-Carbon Black-Nafion Glassy Carbon Electrode for Metoprolol Determination. MEMBRANES 2023; 13:890. [PMID: 38132894 PMCID: PMC10744395 DOI: 10.3390/membranes13120890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/06/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023]
Abstract
For the first time, a new composite voltammetric sensor based on yttria-stabilized zirconia doped with neodymium-carbon black-Nafion glassy carbon electrode (YSZNd-CB-Nafion/GCE) for the determination of metoprolol (MET) has been developed. The instrumental parameters and supporting electrolyte were optimized. For 105 s accumulation time, linearity was achieved in the range of 0.01 to 0.2 µM. The limit of detection (for 105 s accumulation time) was equal to 2.9 nM (2 µg/L), and was the best result in comparison to other voltametric sensors. The reproducibility of the metoprolol signal presented as relative standard deviation (RSD) was equal to 1.9% (n = 7). Additionally, our electrode is characterized by high stability, is easy to use, and has a short preparation time. The proposed sensor was found useful for MET determination in plasma and urine, as well as for pharmaceutical samples, with a good recovery parameter (96-108%). Flow injection analysis (FIA) with amperometric detection was also performed for MET determination. The recovery was calculated and was in the range 101-103%, suggesting that the proposed material may be applied in flow injection analysis.
Collapse
Affiliation(s)
- Małgorzata Suchanek
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. A. Mickiewicza, 30-059 Krakow, Poland;
| | | | - Robert Piech
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. A. Mickiewicza, 30-059 Krakow, Poland;
| |
Collapse
|
3
|
Hu H, Wu S, Wang C, Wang X, Shi X. Electrochemical behaviour of cellulose/reduced graphene oxide/carbon fiber paper electrodes towards the highly sensitive detection of amitrole. RSC Adv 2023; 13:1867-1876. [PMID: 36712608 PMCID: PMC9830654 DOI: 10.1039/d2ra07662d] [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: 12/01/2022] [Accepted: 12/27/2022] [Indexed: 01/11/2023] Open
Abstract
Amitrole is a non-selective triazole herbicide that is widespread used to control a variety of weeds in agriculture, but it may pollute the environment and do harm to organisms. Thus, it is of critical significance to enlist a low-cost, sensitive, stable and renewable method to detect amitrole. In this paper, electrochemical experiments were carried out using carbon fibers/reduced graphene oxide/cellulose paper electrodes, which demonstrated good electrocatalytic performance for amitrole detection. The electrochemical process of amitrole on the surface of the reduced paper electrode was a quasi-reversible reaction controlled by diffusion. Cyclic voltammetry and the amperometric i-t curve method were used for amitrole determination at a micro molar level and higher-concentration range with the following characteristics: linear range 5 × 10-6 mol L-1 to 3 × 10-5 mol L-1, detection limit 2.44 × 10-7 mol L-1. In addition, the relative standard deviation of repeatability is 3.74% and of stability is 4.68%. The reduced paper electrode with high sensitivity, low detection limit, good stability and repeatability provides novel ideas for on-site amitrole detection in food and agriculture.
Collapse
Affiliation(s)
- Hui Hu
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan UniversityWuhan 430079China
| | - Si Wu
- College of Resources and Environmental Engineering, Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and TechnologyWuhan 430081China
| | - Cheng Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of TechnologyGuangzhou 510640China
| | - Xiaohui Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of TechnologyGuangzhou 510640China
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan UniversityWuhan 430079China
| |
Collapse
|
4
|
Górska A, Paczosa-Bator B, Gaidukevič J, Piech R. Development of a New Voltammetric Method for Aceclofenac Determination on Glassy Carbon Electrode Modified with Hierarchical Nanocomposite. SENSORS (BASEL, SWITZERLAND) 2022; 22:8954. [PMID: 36433548 PMCID: PMC9693582 DOI: 10.3390/s22228954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/13/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Aceclofenac (ACL) is an anti-inflammatory drug, which is taken by patients who mainly suffer from rheumatoid conditions. In this work, we propose a new voltammetric method that allows the determination of ACL in pharmaceutics, urine, and plasma. As a working electrode, a glassy carbon electrode (GCE) modified with carbon nanofibers, carbon nanotubes, and NiCo nanoparticles (eCNF/CNT/NiCo-GCE) was used. The mentioned sensors are characterized by good repeatability and sensitivity, and their process of preparation is simple, fast, and cost-effective. Instrumental and method parameters were optimized, and the influence of interferences was investigated. To validate the analytical performance of the method, calibration was conducted. Good linearity was obtained (0.05-1.4 µM, r = 0.998), as well as excellent limit of detection (LOD) and limit of quantification (LOQ) values (0.7 nM and 2.1 nM, respectively). Calculated recoveries that were in the range of 98%-105% indicate that this method is accurate and might be used in routine laboratory practice.
Collapse
Affiliation(s)
- Anna Górska
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Beata Paczosa-Bator
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Justina Gaidukevič
- Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, LT-03225 Vilnius, Lithuania
| | - Robert Piech
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| |
Collapse
|
5
|
Ilager D, Shetti NP, Reddy KR, Tuwar SM, Aminabhavi TM. Nanostructured graphitic carbon nitride (g-C 3N 4)-CTAB modified electrode for the highly sensitive detection of amino-triazole and linuron herbicides. ENVIRONMENTAL RESEARCH 2022; 204:111856. [PMID: 34389349 DOI: 10.1016/j.envres.2021.111856] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/25/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
In agro-areas, linuron (LNR) and amino-triazole (ATZ) are the widely used herbicides to protect crops, but their widespread use pollutes the environment, especially when these are mixed with water or soil. In efforts to address these environmental issues and to detect trace quantities of the herbicides, a graphitic carbon nitride (g-C3N4) with cetyltrimethylammonium bromide (CTAB) modified carbon paste electrode (g-C3N4-CTAB/CPE) was developed and used for the detection of LNR and ATZ. Materials were characterized by XRD, TEM and AFM techniques. The effect of pH on electro-oxidation (under optimized conditions) showed the maximum peak current at pH of 4.2 for AMT and pH 6.0 for LNR. The electro-kinetic and thermodynamic parameters of LNR and ATZ were determined. Additional experiments were performed for the trace level detection of ATZ and LNR using the square wave voltammetric technique. Concentrations were varied linearly in the range of 3.0 × 10-7 M to 4.5 × 10-5 M for ATZ with a detection limit of 6.41 × 10-8 M, and 1.2 × 10-7 M to 3.0 × 10-4 M for LNR with a detection limit of 2.47 × 10-8 M. The developed novel sensor was effective for trace level detection of LNR and ATZ in water and soil samples.
Collapse
Affiliation(s)
- Davalasab Ilager
- Center for Electrochemical Science & Materials, Department of Chemistry, K.L.E. Institute of Technology, Hubballi, 580 027, Karnataka, India
| | - Nagaraj P Shetti
- School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, 580 031, Karnataka, India.
| | - Kakarla Raghava Reddy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Suresh M Tuwar
- Department of Chemistry, Karnatak Science College, Dharwad, 580 001, Karnataka, India
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, 580 031, Karnataka, India; Department of Chemistry, Karnatak University, Dharwad, 580 003, India
| |
Collapse
|
6
|
A Novel Voltametric Measurements of Beta Blocker Drug Propranolol on Glassy Carbon Electrode Modified with Carbon Black Nanoparticles. MATERIALS 2021; 14:ma14247582. [PMID: 34947178 PMCID: PMC8706369 DOI: 10.3390/ma14247582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 11/17/2022]
Abstract
A new voltametric method for highly sensitive propranolol (PROP) determination was developed. A glassy carbon electrode modified with a hybrid material made of carbon black (CB) and Nafion was used as the working electrode. The preconcentration potential and time were optimized (550 mV and 15 s), as well as the supporting electrolyte (0.1 mol L−1 H2SO4). For 15 s preconcentration time, linearity was achieved in the range 0.5–3.5 μmol L−1 and for 120 s in 0.02–0.14 μmol L−1. Based on the conducted calibration (120 s preconcentration time) limit of detection (LOD) was calculated and was equal to 7 nmol L−1. To verify the usefulness of the developed method, propranolol determination was carried out in real samples (tablets and freeze-dried urine). Recoveries were calculated and were in the range 92–102%, suggesting that the method might be considered as accurate. The repeatability of the signal expressed as relative standard deviation (RSD) was equal to 1.5% (n = 9, PROP concentration 2.5 µmol L−1). The obtained results proved that the developed method for propranolol determination might be successfully applied in routine laboratory practice.
Collapse
|
7
|
Nimesulide Determination on Carbon Black-Nafion Modified Glassy Carbon Electrode by Means of Adsorptive Stripping Voltammetry. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-021-00676-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AbstractAdsorptive Stripping Voltammetric method for Nimesulide (NIM) determination was developed. As a working electrode, glassy carbon electrode (GCE) modified with carbon black and Nafion (CB-Nafion GCE) was used. All measurements were carried out in 0.1 M acetate buffer (pH 4.6). Conducted experiments allowed to optimize differential pulse voltammetry (DPV) instrumental parameters: sampling and waiting time ts = tw = 10 ms, step potential Es = 4 mV, and pulse amplitude ΔE = 50 mV. The best results were obtained for preconcentration potential and time equal to 400 mV and 20 s, respectively. Limit of detection was calculated and was equal to 0.14 µM for 20-s preconcentration time and 0.06 µM for 40-s preconcentration time. In order to prove the applicability of the developed method, concentration of nimesulide in pharmaceutical products was determined. Calculated recoveries were in the range 94–99%, which indicates that the method might be assumed as accurate. Coefficient of variation was equal to 5.0% (n = 7, NIM concentration 1 µM) Obtained results of NIM determination were in good agreement with the content declared by producers.
Collapse
|
8
|
Development of a colorimetric sensor array based on monometallic and bimetallic nanoparticles for discrimination of triazole fungicides. Anal Bioanal Chem 2021; 414:5297-5308. [PMID: 33855603 DOI: 10.1007/s00216-021-03272-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/26/2021] [Accepted: 03/04/2021] [Indexed: 10/21/2022]
Abstract
Due to the widespread use of pesticides and their harmful effects on humans and wildlife, monitoring their residual amounts in crops is critically essential but still challenging regarding the development of high-throughput approaches. Herein, a colorimetric sensor array has been proposed for discrimination and identification of triazole fungicides using monometallic and bimetallic silver and gold nanoparticles. Aggregation-induced behavior of AgNPs, AuNPs, and Au-AgNPs in the presence of four triazole fungicides produced a fingerprint response pattern for each analyte. Innovative changes to the metal composition of nanoparticles leads to the production of entirely distinct response patterns that can be used for the detection and discrimination of triazoles. Pattern recognition methods, including linear discriminant analysis (LDA) and hierarchical cluster analysis, have been employed for the differentiation of triazoles in the concentration range of 0.1-0.55 μg mL-1. Besides, the sensor array demonstrates promising practicability to satisfactorily distinguished triazole in mixtures and complex media of wheat flour and cucumber samples. The proposed colorimetric sensor array might pave the way towards a cost-effective and rapid, yet sensitive platform for high-throughput monitoring of residual amounts of pesticides for on-site applications.
Collapse
|
9
|
Yashas SR, Sandeep S, Shivakumar BP, Swamy NK. Potentiometric polyphenol oxidase biosensor for sensitive determination of phenolic micropollutant in environmental samples. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:27234-27243. [PMID: 31134539 DOI: 10.1007/s11356-019-05495-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/15/2019] [Indexed: 06/09/2023]
Abstract
The present study demonstrates the development of polyphenol oxidase (PPO) biosensor for the detection of catechol using strontium copper oxide (SrCuO2) and polypyrrole nanotubes (PPyNT) matrix. The SrCuO2 micro-seeds, a perovskite compound, are synthesized by co-precipitation under pH 8.0. The as-synthesized micro-seeds are characterized by scanning electron microscopy (SEM), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction spectroscopy (XRD). The proposed sensor is fabricated on pencil graphite (P-Gr) by successive deposition of PPyNT, SrCuO2, and PPO enzyme. The developed PPO/SrCuO2/PPyNT/P-Gr sensor is characterized by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) techniques. The PPO/SrCuO2/PPyNT/P-Gr displayed excellent electrocatalytic activity towards the oxidation and detection of catechol. The as-developed sensor showed sensitive response ascribing to limit of detection (LOD) of 0.15 μM and sensitivity of 15.60 μA μM-1 cm-2. The fabricated sensor exhibited excellent repeatability and longer shelf life. The proposed biosensor finds its application within the broad linear range of 1-50 μM. Real sample analysis of mineral water, tap water, and domestic wastewater using developed sensor showed acceptable recovery. Hence, the biosensor endeavors its application in environmental monitoring and protection.
Collapse
Affiliation(s)
- Shivamurthy Ravindra Yashas
- Department of Environmental Engineering, JSS Science and Technology University, Mysuru, Karnataka, 570006, India
| | - Shadakshari Sandeep
- Department of Chemistry, JSS Science and Technology University, Mysuru, Karnataka, 570006, India
| | | | - Ningappa Kumara Swamy
- Department of Chemistry, JSS Science and Technology University, Mysuru, Karnataka, 570006, India.
| |
Collapse
|
10
|
Synergistic effect of carbon nanotubes, copper and silver nanoparticles as an efficient electrochemical sensor for the trace recognition of amlodipine besylate drug. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2807-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
11
|
Wang Y, Zhang Y, Sha H, Xiong X, Jia N. Design and Biosensing of a Ratiometric Electrochemiluminescence Resonance Energy Transfer Aptasensor between a g-C 3N 4 Nanosheet and Ru@MOF for Amyloid-β Protein. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36299-36306. [PMID: 31514493 DOI: 10.1021/acsami.9b09492] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A dual-wavelength ratiometric electrochemiluminescence resonance energy transfer (ECL-RET) aptasensor based on the carbon nitride nanosheet (g-C3N4 NS) and metal-organic frameworks (Ru@MOFs) as energy donor-receptor pairs is first designed for the detection of the amyloid-β (Aβ) protein. The cathode ECL of g-C3N4 NS gradually decreased, whereas the anode ECL from Ru@MOF pyramidally enhanced along with the increasing concentration of Aβ in a 0.1 M phosphate-buffered saline solution containing 0.1 M S2O82-. Additionally, it is worth noting that 2-amino terephthalic acid from MOF not only can load abundant amounts of luminophor Ru(bpy)32+ but also promote the conversion of more amounts of S2O82- that served as a coreactant accelerator into SO4•-, further enhancing the ECL signal of Ru@MOF. Besides, the ECL intensity from the g-C3N4 NS had a tremendous spectrum overlap with the UV-vis spectrum of Ru@MOF, demonstrating the high-efficiency ECL-RET from g-C3N4 NS to Ru@MOF. According to the ratio of ECL460nm/ECL620nm, the constructed aptasensor for the detection of Aβ showed a wide linear range from 10-5 to 500 ng/mL and a low detection limit of 3.9 fg/mL (S/N = 3) with a correction coefficient of 0.9965. The obtained results certified that the dual-wavelength ratiometric ECL sensor could provide a reliable direction and have the potential for application in biosensing and clinical diagnosis fields.
Collapse
Affiliation(s)
- Yinfang Wang
- Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Department of Chemistry , Shanghai Normal University , Shanghai 200234 , China
| | - Yao Zhang
- Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Department of Chemistry , Shanghai Normal University , Shanghai 200234 , China
| | - Haifeng Sha
- Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Department of Chemistry , Shanghai Normal University , Shanghai 200234 , China
| | - Xin Xiong
- Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Department of Chemistry , Shanghai Normal University , Shanghai 200234 , China
| | - Nengqin Jia
- Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Department of Chemistry , Shanghai Normal University , Shanghai 200234 , China
| |
Collapse
|
12
|
Kantize K, Booysen IN, Mambanda A. Electrochemical sensing of acetaminophen using nanocomposites comprised of cobalt phthalocyanines and multiwalled carbon nanotubes. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113391] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
13
|
Colorimetric aminotriazole assay based on catalase deactivation-dependent longitudinal etching of gold nanorods. Mikrochim Acta 2019; 186:565. [DOI: 10.1007/s00604-019-3677-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 07/06/2019] [Indexed: 12/15/2022]
|
14
|
Ngwenya V, Booysen IN, Mambanda A. A cobalt(II) phthalocyanine with indole substituents: formation, characterization and electrocatalytic studies. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1599108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Vuyelwa Ngwenya
- School of Chemistry and Physics, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Irvin Noel Booysen
- School of Chemistry and Physics, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Allen Mambanda
- School of Chemistry and Physics, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| |
Collapse
|
15
|
Usai V, Mugadza T, Chigondo F, Shumba M, Nharingo T, Moyo M, Tshuma P. Synthesis and characterisation of cobalt oxide nanoparticles decorated graphene oxide and its electrocatalytic behaviour. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
16
|
Mafuwe PT, Moyo M, Mugadza T, Shumba M, Nyoni S. Cobalt oxide nanoparticles anchored polyaniline-appended cobalt tetracarboxy phthalocyanine, modified glassy carbon electrode for facile electrocatalysis of amitrole. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-4131-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
17
|
Wang Y, Guo W, Jia N. High-Sensitivity Electrochemiluminescence Biosensor Based on Silver-Carbon Nitride for the Detection of Dopamine utilizing Enhancement Effects. ChemElectroChem 2018. [DOI: 10.1002/celc.201800877] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yinfang Wang
- Department of Chemistry; Shanghai Normal University; Shanghai 200234 China
| | - Weiwei Guo
- Department of Chemistry; Shanghai Normal University; Shanghai 200234 China
| | - Nengqin Jia
- Department of Chemistry; Shanghai Normal University; Shanghai 200234 China
| |
Collapse
|
18
|
Synthesis, characterization, and preparation of nickel nanoparticles decorated electrochemically reduced graphene oxide modified electrode for electrochemical sensing of diclofenac. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-4071-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
19
|
El Khamlichi R, Bouchta D, Ben Atia M, Choukairi M, Khalid RT, Raissouni I, Tazi S, Mohammadi A, Soussi A, Draoui K, Faiza C, Lamarti Sefian M. A novel carbon/chitosan paste electrode for electrochemical detection of normetanephrine in the urine. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-3906-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
20
|
Pu B, Wang L, Guo H, Yang J, Chen H, Zhou Y, Yang J, Zhao B, Niu X. Influence of PEG Stoichiometry on Structure-Tuned Formation of Self-Assembled Submicron Nickel Particles. MATERIALS 2018; 11:ma11020222. [PMID: 29385092 PMCID: PMC5848919 DOI: 10.3390/ma11020222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 01/29/2018] [Accepted: 01/29/2018] [Indexed: 11/16/2022]
Abstract
Self-assembled submicron nickel particles were successfully synthesized via the one-step surfactant-assisted solvothermal method. The impact of surfactant and reducing agent stoichiometry is investigated in this manuscript. Different morphologies and structures of Ni particles, including flower-like nanoflakes, hydrangea-like structures, chain structures, sphere-like structures, and hollow structures were prepared through different processing conditions with two parameters such as temperature and time. Based on scanning electron microscopy (SEM), X-ray diffraction (XRD), thermal gravimetric analysis (TGA) and vibrating sample magnetometry (VSM), the submicron nickel particles show good saturation magnetization and excellent thermal stabilities with a possible growth mechanism for the variety of the structure-tuned formation. Importantly, the microwave absorption properties of the submicron nickel particles were studied. The lowest reflection loss of Ni-P₉/T200/H15 with a thin layer thickness of 1.7 mm can reach -42.6 dB at 17.3 GHz.
Collapse
Affiliation(s)
- Bingxue Pu
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Liping Wang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Heng Guo
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Jian Yang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Haiyuan Chen
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Yajun Zhou
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Jin Yang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Bin Zhao
- School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan 250101, China.
| | - Xiaobin Niu
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| |
Collapse
|
21
|
Khan I, Pandit UJ, Limaye SN. Design of Electrochemically Modified fMWCNT-pencil Graphite Electrode Decorated with Cu and Ag Nanofilm and its Electrocatalytic Behavior Towards Imazethapyr. ELECTROANAL 2017. [DOI: 10.1002/elan.201700128] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Imran Khan
- Rare Earth and Electroanalytical Research Laboratory; Department of Chemistry; Dr. HariSingh Gour Vishwavidyalaya (A Central University) Sagar, (M.P.); India
| | - Umar J. Pandit
- Rare Earth and Electroanalytical Research Laboratory; Department of Chemistry; Dr. HariSingh Gour Vishwavidyalaya (A Central University) Sagar, (M.P.); India
| | - Sudhir N. Limaye
- Rare Earth and Electroanalytical Research Laboratory; Department of Chemistry; Dr. HariSingh Gour Vishwavidyalaya (A Central University) Sagar, (M.P.); India
| |
Collapse
|
22
|
Khan I, Pandit UJ, Wankar S, Limaye SN. Design of Electrochemical Sensor Based on fMWCNT-CPE Decorated with Ti Nanofilm and Its Electrocatalytic Behavior Towards Aminotriazole. Electrocatalysis (N Y) 2017. [DOI: 10.1007/s12678-017-0358-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
23
|
A novel l-leucine modified Sol-Gel-Carbon electrode for simultaneous electrochemical detection of homovanillic acid, dopamine and uric acid in neuroblastoma diagnosis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 71:870-878. [PMID: 27987784 DOI: 10.1016/j.msec.2016.10.076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 09/14/2016] [Accepted: 10/30/2016] [Indexed: 11/23/2022]
Abstract
Neuroblastoma is a pediatric neuroblastic tumor arising in the sympathetic nervous crest cells. A high grade of Neuroblastoma is characterized by a high urinary excretion of homovanillic acid and dopamine. In this work l-leucine modified Sol-Gel-Carbon electrode was used for a sensitive voltammetric determination of homovanillic acid and dopamine in urine. The electrochemical response characteristics were investigated by cyclic and differential pulse voltammetry; the modified electrode has shown an increase in the effective area of up to 40%, a well-separated oxidation peaks and an excellent electrocatalytic activity. High sensitivity and selectivity in the linear range of 0,4-100μML-1 of homovanillic acid and 10-120μML-1 of dopamine were also obtained. Moreover, a sub-micromolar limit of detection of 0.1μM for homovanillic acid and 1.0μM for the dopamine was achieved. Indeed, high reproducibility with simple preparation and regeneration of the electrode surface made this electrode very suitable for the determination of homovanillic acid and dopamine in pharmaceutical and clinical preparations. The mechanism of homovanillic acid and the electrochemical oxidation at l-leucine modified Sol-Gel-Carbon electrode is described out the B3P86/6-31+G(d,p) level of theory as implemented in Gaussian software.
Collapse
|
24
|
Mani V, Devasenathipathy R, Chen SM, Vasantha VS, Ajmal Ali M, Huang ST, Al-Hemaid FMA. A simple electrochemical platform based on pectin stabilized gold nanoparticles for picomolar detection of biologically toxic amitrole. Analyst 2016; 140:5764-71. [PMID: 26171468 DOI: 10.1039/c5an00930h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Amitrole is a biologically toxic nonselective herbicide which contaminates surface and ground waters at unprecedented rates. All reported modified electrodes that detect amitrole within sub-micromolar to nanomolar levels were based on the electro-oxidation of amitrole. Herein, we developed a new conceptual idea to detect picomolar concentrations of amitrole based on calcium cross linked pectin stabilized gold nanoparticle (CCLP-GNP) film modified electrode which was prepared by electrodeposition. When the electrochemical behavior of amitrole was investigated at the CCLP-GNP film, the reduction peak current of the GNPs linearly decreased as the concentration of amitrole increases. We have designed a determination platform based on the amitrole dependent decrease of the GNP cathodic peak. The described concept and high sensitivity of square wave voltammetry together facilitate the great sensing ability; as a result the described approach is able to reach a low detection limit of 36 pM which surpassed the detection limits of existing protocols. The sensor presents a good ability to determine amitrole in two linear concentration ranges: (1) 100 pM-1500 pM with a detection limit of 36 pM; (2) 100 nM-1500 nM with a detection limit of 20 nM. The preparation of CCLP-GNPs is simple, rapid and does not require any reducing agents.
Collapse
Affiliation(s)
- Veerappan Mani
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, Republic of China.
| | | | | | | | | | | | | |
Collapse
|
25
|
Moyo P, Mugadza T, Mehlana G, Guyo U. Synthesis and characterization of activated carbon–ethylenediamine–cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2477-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
26
|
Demirbaş Ü, Akyüz D, Mermer A, Akçay HT, Demirbaş N, Koca A, Kantekin H. The electrochemical and spectroelectrochemical properties of metal free and metallophthalocyanines containing triazole/piperazine units. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 153:478-487. [PMID: 26397034 DOI: 10.1016/j.saa.2015.08.050] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 08/12/2015] [Accepted: 08/30/2015] [Indexed: 06/05/2023]
Abstract
The synthesis and characterization of novel peripherally tetra [1,2,4]-triazole substituted metal-free phthalocyanine and its metal complexes (Zn(II), Ni(II), Pb(II), Cu(II) and Fe(II)) and the investigation of electrochemical and spectroelectrochemical properties of metal-free, Zn(II), Pb(II), Fe(II) phthalocyanines were performed for the first time in this study. Electrochemical characterizations of the complexes were performed with voltammetric and in situ spectroelectrochemical measurements. Voltammetric responses of the complexes supported the proposed structures, since complexes bearing redox inactive Pc ring metal centers just gave Pc based electron transfer reactions, while iron phthalocyanine went to metal based electron transfer reaction in addition to the Pc based ones. Electron withdrawing nature of [1,2,4]-triazole substituents shifted the redox processes toward the positive potentials. All complexes were electropolymerized during the oxidation reactions in dichloromethane (DCM) solvent. Types of the metal center of the complexes altered the electropolymerization reactions of the complexes. Spectra and colors of the electrogenerated redox species of the complexes were also determined with in situ spectroelectrochemical and in situ electrocolorimetric measurements.
Collapse
Affiliation(s)
- Ümit Demirbaş
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Duygu Akyüz
- Department of Chemical Engineering, Engineering Faculty, Marmara University, 34722, Göztepe, Istanbul, Turkey
| | - Arif Mermer
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Hakkı Türker Akçay
- Department of Chemistry, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, 53100 Rize, Turkey
| | - Neslihan Demirbaş
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Atıf Koca
- Department of Chemical Engineering, Engineering Faculty, Marmara University, 34722, Göztepe, Istanbul, Turkey
| | - Halit Kantekin
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey.
| |
Collapse
|
27
|
Fu Y, Wang T, Su W, Yu Y, Hu J. The electrocatalytic oxidation of carbohydrates at a nickel/carbon paper electrode fabricated by the filtered cathodic vacuum arc technique. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.05.192] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
28
|
Fu Y, Su W, Wang T, Hu J. Characterization and electrochemical properties of a nickel film/carbon paper electrode prepared by a filtered cathodic vacuum arc technique. RSC Adv 2015. [DOI: 10.1039/c5ra09487a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SEM spectrum of bare CP in low magnification (A), bare CP of cross-sectional views (B), bare CP in high magnification (C), Ni/CP in high magnification (D) and EDS spectrum of bare CP (E) and Ni/CP electrode (F).
Collapse
Affiliation(s)
- Yingyi Fu
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- PR China
| | - Wen Su
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- PR China
| | - Tong Wang
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- PR China
| | - Jingbo Hu
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- PR China
- Key Laboratory of Beam Technology and Material Modification of Ministry of Education
| |
Collapse
|
29
|
Thapliyal N, Osman NSE, Patel H, Karpoormath R, Goyal RN, Moyo T, Patel R. NiO–ZrO2 nanocomposite modified electrode for the sensitive and selective determination of efavirenz, an anti-HIV drug. RSC Adv 2015. [DOI: 10.1039/c5ra05286f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A highly sensitive NiO–ZrO2 nanocomposite modified electrode was fabricated for trace analysis of efavirenz in pharmaceutical and biological samples.
Collapse
Affiliation(s)
- Neeta Thapliyal
- Department of Pharmaceutical Chemistry
- College of Health Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Nadir S. E. Osman
- School of Chemistry and Physics
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Harun Patel
- Department of Pharmaceutical Chemistry
- College of Health Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry
- College of Health Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Rajendra N. Goyal
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Thomas Moyo
- School of Chemistry and Physics
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Rajkumar Patel
- Division of Physics & Semiconductor Science
- Dongguk University
- Seoul 100-715
- South Korea
| |
Collapse
|
30
|
TEIXEIRA ME, SEDENHO GC, STRADIOTTO NR. Detection of Several Carbohydrates Using Boron-doped Diamond Electrodes Modified with Nickel Hydroxide Nanoparticles. ANAL SCI 2015; 31:773-80. [DOI: 10.2116/analsci.31.773] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Milena E. TEIXEIRA
- Department of Analytical Chemistry, Institute of Chemistry, Universidade Estadual Paulista (UNESP)
| | - Graziela C. SEDENHO
- Department of Analytical Chemistry, Institute of Chemistry, Universidade Estadual Paulista (UNESP)
| | - Nelson R. STRADIOTTO
- Department of Analytical Chemistry, Institute of Chemistry, Universidade Estadual Paulista (UNESP)
| |
Collapse
|