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Lai YR, Wang SSS, Lin TH. Using silver nanoparticle-decorated whey protein isolate amyloid fibrils to modify the electrode surface used for electrochemical detection of para-nitrophenol. Int J Biol Macromol 2024; 264:130404. [PMID: 38417752 DOI: 10.1016/j.ijbiomac.2024.130404] [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: 12/29/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/01/2024]
Abstract
Due to their organized structures, remarkable stiffness, and nice biocompatibility and biodegradability, amyloid fibrils serve as building blocks for versatile sustainable materials. Silver nanoparticles (AgNPs) are commonly used as the nano-catalysts for various electrochemical reactions. Given their large specific surface area and high surface energy, AgNPs exhibit high aggregation propensity, which hampers their electrocatalytic performance. Food protein wastes have been identified to be associated with climate change and environmental impacts, and a surplus of whey proteins in dairy industries causes high biological and chemical demands, and greenhouse gas emissions. This study is aimed at constructing sustainable electrode surface modifiers using AgNP-deposited whey protein amyloid fibrils (AgNP/WPI-AFs). AgNP/WPI-AFs were synthesized and characterized via spectroscopic techniques, electron microscopy, and X-ray diffraction. Next, the electrocatalytic performance of AgNP/WPI-AF modified electrode was assessed via para-nitrophenol (p-NP) reduction combined with various electrochemical analyses. Moreover, the reaction mechanism of p-NP electrocatalysis on the surface of AgNP/WPI-AF modified electrode was investigated. The detection range, limit of detection, sensitivity, and selectivity of the AgNP/WPI-AF modified electrode were evaluated accordingly. This work not only demonstrates an alternative for whey valorization but also highlights the feasibility of using amyloid-based hybrid materials as the electrode surface modifier for electrochemical sensing purposes.
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Affiliation(s)
- You-Ren Lai
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Steven S-S Wang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Ta-Hsien Lin
- Laboratory of Nuclear Magnetic Resonance, Department of Medical Research, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
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2
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Mejri A, Mandriota G, Hamza E, Curri ML, Ingrosso C, Mars A. Pencil Graphite Electrocatalytic Sensors Modified by Pyrene Coated Reduced Graphene Oxide Decorated with Molybdenum Disulfide Nanoroses for Hydrazine and 4-Nitrophenol Detection in Real Water Samples. Molecules 2023; 28:7311. [PMID: 37959731 PMCID: PMC10648802 DOI: 10.3390/molecules28217311] [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: 10/07/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
Novel nanostructured platforms based on Pencil Graphite Electrodes (PGEs), modified with pyrene carboxylic acid (PCA) functionalized Reduced Graphene Oxide (rGO), and then decorated by chronoamperometry electrodeposition of MoS2 nanoroses (NRs) (MoS2NRs/PCA-rGO/PGEs) were manufactured for the electrocatalytic detection of hydrazine (N2H4) and 4-nitrophenol, pollutants highly hazardous for environment and human health. The surface morphology and chemistry of the MoS2NRs/PCA-rGO/PGEs were characterized by scanning electron microscopy (SEM), Raman, and X-ray photoelectron spectroscopy (XPS), assessing the coating of the PCA-rGO/PGEs by dense multilayers of NRs. N2H4 and 4-nitrophenol have been monitored by Differential Pulse Voltammetry (DPV), and the MoS2NRs/PCA-rGO/PGEs electroanalytical properties have been compared to the PGEs, as neat and modified by PCA-rGO. The MoS2NRs/PCA-rGO/PGEs demonstrated a higher electrochemical and electrocatalytic activity, due to their high surface area and conductivity, and very fast heterogeneous electron transfer kinetics at the interphase with the electrolyte. LODs lower than the U.S. EPA recommended concentration values in drinking water, namely 9.3 nM and 13.3 nM, were estimated for N2H4 and 4-nitrophenol, respectively and the MoS2NRs/PCA-rGO/PGEs showed good repeatability, reproducibility, storage stability, and selectivity. The effectiveness of the nanoplatforms for monitoring N2H4 and 4-nitrophenol in tap, river, and wastewater was addressed.
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Affiliation(s)
- Alma Mejri
- Laboratory of Natural Water Treatment (LADVEN), Water Researches and Technologies Center, Techno-Park Borj-Cedria, University of Carthage, BP 273, Soliman 8020, Tunisia
| | - Giacomo Mandriota
- CNR-IPCF Sez. Bari, c/o Department of Chemistry, Università degli Studi di Bari, Via Orabona 4, I-70126 Bari, Italy
| | - Elfil Hamza
- Laboratory of Natural Water Treatment (LADVEN), Water Researches and Technologies Center, Techno-Park Borj-Cedria, University of Carthage, BP 273, Soliman 8020, Tunisia
| | - Maria Lucia Curri
- CNR-IPCF Sez. Bari, c/o Department of Chemistry, Università degli Studi di Bari, Via Orabona 4, I-70126 Bari, Italy
- Department of Chemistry, Università degli Studi di Bari, Via Orabona 4, I-70126 Bari, Italy
| | - Chiara Ingrosso
- CNR-IPCF Sez. Bari, c/o Department of Chemistry, Università degli Studi di Bari, Via Orabona 4, I-70126 Bari, Italy
| | - Abdelmoneim Mars
- Laboratory of Natural Water Treatment (LADVEN), Water Researches and Technologies Center, Techno-Park Borj-Cedria, University of Carthage, BP 273, Soliman 8020, Tunisia
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3
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Wang S, Li Y, Song J, Zhang J, Ma Y. Recent progress in the electrochemical quantification of nitrophenols. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Jia L, Hao J, Wang S, Yang L, Liu K. Sensitive detection of 4-nitrophenol based on pyridine diketopyrrolopyrrole-functionalized graphene oxide direct electrochemical sensor. RSC Adv 2023; 13:2392-2401. [PMID: 36741183 PMCID: PMC9837858 DOI: 10.1039/d2ra07239d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/07/2022] [Indexed: 01/15/2023] Open
Abstract
For highly sensitive detection of 4-nitrophenol (4-NP) in the environment, a novel pyridine diketopyrrolopyrrole-functionalized graphene oxide (PDPP-GO) composite was constructed for the first time by an improved Hummers' method. Herein, PDPP was completely dissolved in sulfuric acid (6 mol L-1) and reacted with GO, promoting PDPP evenly adhering to the GO surface. Moreover, the specific surface area increased from 15.51 to 22.033 m2 g-1. Infrared spectroscopy and X-ray photoelectron spectroscopy simultaneously demonstrated that PDPP was bound to GO by the strong intermolecular hydrogen bonding and π-π stacking conjugation. During the cyclic voltammetry test, the PDPP-GO coated glassy carbon electrode (PDPP-GO/GCE) direct electrochemical sensor gave expression to the best electrocatalytic activity for 4-nitrophenol detection than GO/GCE and bare GCE. Under optimization conditions, the as-prepared PDPP-GO/GCE sensor brought out remarkable sensitivities of 18.54 (0.5-50 μM) and 6.61 μA μM-1 cm-2 (50-163 μM) in the linear detection of 4-NP. Besides, a low detection limit of 0.10 μM, reliable long-term stability, excellent selectivity, and reproducibility were obtained. In the real sample test, the PDPP-GO/GCE demonstrated sensitive and reliable determination.
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Affiliation(s)
- Lingpu Jia
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Institute for Advanced Study, Chengdu UniversityChengdu 610106China
| | - Juan Hao
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu UniversityChengdu 610106China
| | - Shuangshuang Wang
- State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and TechnologyMianyang 621010China
| | - Long Yang
- State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and TechnologyMianyang 621010China
| | - Kunping Liu
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu UniversityChengdu 610106China
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Electrochemical Sensors Based on Au Nanoparticles Decorated Pyrene-Reduced Graphene Oxide for Hydrazine, 4-Nitrophenol and Hg 2+ Detection in Water. Molecules 2022; 27:molecules27238490. [PMID: 36500583 PMCID: PMC9738402 DOI: 10.3390/molecules27238490] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/25/2022] [Accepted: 11/27/2022] [Indexed: 12/12/2022] Open
Abstract
Monitoring hazardous chemical compounds such as hydrazine (N2H4), 4-nitrophenol (4-NP) and Hg2+ in natural water resources is a crucial issue due to their toxic effects on human health and catastrophic impact on the environment. Electrochemical nanostructured platforms integrating hybrid nanocomposites based on graphene derivatives and inorganic nanoparticles (NPs) are of great interest for such a purpose. In this work, disposable screen-printed carbon electrodes (SPCEs) have been modified with a hybrid nanocomposite formed by reduced graphene oxide (RGO), functionalized by 1-pyrene carboxylic acid (PCA), and decorated by colloidal Au NPs. These hybrid platforms have been tested for the electrocatalytic detection of N2H4 and 4-NP by differential pulse voltammetry and have been modified with an electropolymerized film of Hg2+ ions imprinted polycurcumin for the electroanalytical detection of Hg2+ by DPV. LODs, lower and in line with the lowest ones reported for state-of-the-art electrochemical sensors, integrating similar Au-graphene < nanocomposites, have been estimated. Additionally, good repeatability, reproducibility, and storage stability have been assessed, as well as a high selectivity in the presence of a 100-fold higher concentration of interfering species. The applicability of the proposed platforms for the detection of the compounds in real complex matrices, such as tap and river water samples, has been effectively demonstrated.
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6
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Highly Sensitive and Selective Eco-Toxic 4-Nitrophenol Chemical Sensor Based on Ag-Doped ZnO Nanoflowers Decorated with Nanosheets. Molecules 2021; 26:molecules26154619. [PMID: 34361772 PMCID: PMC8347949 DOI: 10.3390/molecules26154619] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/18/2021] [Accepted: 07/20/2021] [Indexed: 11/17/2022] Open
Abstract
Herein, we have developed a novel sensing electrode to detect the eco-toxic 4-nitrophenol (4-NP). Ag-doped-ZnO nanoflowers were synthesized by facile hydrothermal method and examined by several characterization techniques in order to understand the morphology, crystal structure, composition, and surface properties. Morphological results were confirmed by the formation of Ag-doped ZnO nanoflowers decorated with nanosheets. Ag-doped ZnO/glassy carbon electrode (GCE) electrode-material-matrix was used for electrochemical sensing of toxic 4-NP. Under optimized conditions, Ag-doped ZnO/GCE modified electrode exhibits high-sensitivity and selectivity compared to the bare GCE electrode. The Ag-doped ZnO/GCE modified electrode exhibits high electrocatalytic oxidation towards 4-NP. Anodic peak current of 4-NP is increased linearly by increasing the concentration of nitrophenol. Additionally, Ag-doped ZnO/GCE shows a wide range of sensitivity from 10 µM to 500 µM, and a linear calibration plot with a good detection limit of 3 µM (S/N = 3). The proposed Ag-doped ZnO/GCE modified electrode showed high sensing stability. In addition, the oxidation mechanism was studied. The obtained results revealed that the Ag-ZnO/GCE electrode could be the promising sensing electrode for 4-NP sensing.
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7
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Mohanta D, Mahanta A, Mishra SR, Jasimuddin S, Ahmaruzzaman M. Novel SnO 2@ZIF-8/gC 3N 4 nanohybrids for excellent electrochemical performance towards sensing of p-nitrophenol. ENVIRONMENTAL RESEARCH 2021; 197:111077. [PMID: 33794171 DOI: 10.1016/j.envres.2021.111077] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 06/12/2023]
Abstract
Herein, a novel synthetic strategy has been proposed to prepare engineered SnO2@ZIF-8/gC3N4 nanohybrids for electrochemical sensing of p-nitrophenol (p-NP). The electrochemical properties were investigated using cyclic voltammetry (CV), chronoamperometry (CA), and differential pulse voltammetry (DPV). The developed nanohybrid sensor displayed an excellent electrochemical performance towards sensing of p-NP with a detection limit of 0.565 μM. The sensitivity of the prepared nanohybrid was found to be 2.63 μAcm-2μM-1. Moreover, the newly fabricated sensor exhibited remarkable selectivity (over tenfold excess) in the presence of common interferents. The simultaneous detection of isomers of nitrophenol is difficult using the developed sensor. However, other common interferents, such as phenol and aminophenol have negligible effects on the sensitivity of SnO2@ZIF-8/gC3N4 towards the detection of p-nitrophenol. Further, the newly developed sensor showed consistency of sensing response up to 30 days. Thus, implementation of SnO2@ZIF-8/gC3N4 nanohybrids as a p-NP electrochemical sensor offers the advantages of simplicity, selectivity, and stability.
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Affiliation(s)
- Dipyaman Mohanta
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Abhinandan Mahanta
- Department of Chemistry, Assam University, Silchar, Assam, 788010, India
| | - Soumya Ranjan Mishra
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Sk Jasimuddin
- Department of Chemistry, Assam University, Silchar, Assam, 788010, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India.
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8
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Sajjan VA, Aralekallu S, Nemakal M, Palanna M, Keshavananda Prabhu C, Koodlur Sannegowda L. Nanomolar detection of 4-nitrophenol using Schiff-base phthalocyanine. Microchem J 2021. [DOI: 10.1016/j.microc.2021.105980] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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9
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Ramu AG, Salla S, Gopi S, Silambarasan P, Yang DJ, Song MJ, Ali HM, Salem MZM, Choi D. Surface-tuned hierarchical ɤ-Fe 2O 3-N-rGO nanohydrogel for efficient catalytic removal and electrochemical sensing of toxic nitro compounds. CHEMOSPHERE 2021; 268:128853. [PMID: 33187664 DOI: 10.1016/j.chemosphere.2020.128853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 06/11/2023]
Abstract
4- Nitrophenol (4-NP) is a top rated hazardous environmental pollutant and secondary explosive chemicals. For the sake of ecology and environment safety, the catalytic reduction and detection of 4-NP is highly important. In this work, ɤ-Fe2O3-nitrogen doped rGO (ɤ-Fe2O3-N-rGO) nanohydrogel was synthesized by green hydrothermal method. The morphology and phase purity of prepared ɤ-Fe2O3-N-rGO nanohydrogel were confirmed by various analytical (SEM, TEM, XRD, and XPS) and electrochemical techniques. The morphological structure of ɤ-Fe2O3-N-rGO nanohydrogel confirmed that the nanocrystals are well covered over the 2D N-rGO layer. Further, ɤ-Fe2O3-N-rGO nanohydrogel was applied for the catalytic reduction and electrochemical detection of ecotoxic 4-NP. A low cost, ɤ-Fe2O3-N-rGO nanohydrogel displayed an excellent catalytic activity, high recyclability (>5 cycles) and high conversion efficiency of 4-NP to 4-Aminophenol (4-AP). In addition, ɤ-Fe2O3-N-rGO nanohydrogel modified GCE displayed a wide linear sensing range (0.1-1000 μM), and a low detection limit (LOD) of 0.1 μM with excellent sensitivity, high selectivity (<1.2%) and good stability (>4 weeks). The developed sensor electrode shows the low reduction potential of -0.3 V and -0.60 V for the determination of 4-NP. The proposed ɤ-Fe2O3-N-rGO nanohydrogel is promising catalyst for the detection and removal of toxic aromatic nitro compounds in real site applications.
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Affiliation(s)
- A G Ramu
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon-eup, Sejong-city, 30016, Republic of Korea
| | - Sunitha Salla
- Department of Chemistry, Sathyabama Institute of Science and Technology (Deemed to Be University), Chennai, 600119, India
| | - S Gopi
- Department of BioNano Technology, Gachon University, Seongnam, 13120, Republic of Korea
| | - P Silambarasan
- Department of Chemical Engineering, Sunchon University, Jolanamdo, 540-950, Republic of Korea
| | - D J Yang
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon-eup, Sejong-city, 30016, Republic of Korea
| | - M J Song
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon-eup, Sejong-city, 30016, Republic of Korea
| | - Hayssam M Ali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia; Timber Trees Research Department, Sabahia Horticulture Research Station, Horticulture Research Institute, Agriculture Research Center, Alexandria, 21526, Egypt
| | - Mohamed Z M Salem
- Forestry and Wood Technology Department, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria, 21545, Egypt
| | - Dongjin Choi
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon-eup, Sejong-city, 30016, Republic of Korea.
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10
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Hyder A, Sanam Memon S, Memon S, Sirajuddin, Memon ZUA, Bux Rajpar D, Gul Shaikh S, Ahmed Buledi J. A highly discerning p-tetranitrocalix[4]arene (p-TNC4) functionalized copper nanoparticles: A smart electrochemical sensor for the selective determination of Diphenhydramine drug. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105908] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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D'Almeida SR, Buoro RM. Determination of
p
‐Nitrophenol in Synthetic Textile Wastewater Samples Using a Graphene Oxide/Palladium Nanoparticles Modified Carbon Paste Electrode. ELECTROANAL 2021. [DOI: 10.1002/elan.202060539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Suysia R. D'Almeida
- Instituto de Química de São Carlos Universidade de São Paulo Av. Trabalhador São-Carlense, 400 SP, 13566-590 São Carlos Brazil
| | - Rafael M. Buoro
- Instituto de Química de São Carlos Universidade de São Paulo Av. Trabalhador São-Carlense, 400 SP, 13566-590 São Carlos Brazil
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12
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Ramu AG, Yang DJ, Al Olayan EM, AlAmri OD, Aloufi AS, Almushawwah JO, Choi D. Synthesis of hierarchically structured T-ZnO-rGO-PEI composite and their catalytic removal of colour and colourless phenolic compounds. CHEMOSPHERE 2021; 267:129245. [PMID: 33321274 DOI: 10.1016/j.chemosphere.2020.129245] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/02/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Phenolic compounds bisphenol A (BPA) and 4-nitrophenol (4-NP) are the prime water contaminants. As reported, these compounds are some of the highly hazardous ones to the human and living species. In this study, T-ZnO-rGO-PEI composite was synthesized employing hydrothermal method and the obtained composite samples were systematically characterized by FTIR, XPS, FE-SEM and HR-TEM studies. The FTIR, XPS analysis confirmed the successful surface modification of T-ZnO-rGO-PEI composite. The FE-SEM morphology confirmed the formation of ZnO (arm length about 2.5 μm) tetrapod structured in synthesized T-ZnO-rGO-PEI composite. The thickness of formed ZnO arm (0.44 μm) was increased after the polymer coating which confirmed the successful surface modification by PEI polymer. The HR-TEM images confirm the uniform coating of PEI polymer on T-ZnO-rGO surface. The catalytic activity and adsorption capacity of the synthesized T-ZnO-rGO-PEI composite was successfully explored using 4-nitrophenol and bisphenol-A as model pollutants .T-ZnO-rGO-PEI composite and found that 4-NP reduction reaction was completed within 10 min with the rate of 0.224 min-1. The BPA adsorption over T-ZnO-rGO-PEI exhibited high adsorption rate of 0.0210 min-1. In addition, the detailed 4-NP reduction and BPA adsorption mechanism was demonstrated. Hence the synthesized T-ZnO-rGO-PEI composite is a promising catalyst for the removal of micropollutants in aqueous medium.
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Affiliation(s)
- A G Ramu
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon- Eup, Sejong-city, 30016, Republic of Korea
| | - D J Yang
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon- Eup, Sejong-city, 30016, Republic of Korea
| | - Ebtesam M Al Olayan
- Department of Zoology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ohoud D AlAmri
- Department of Zoology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abeer S Aloufi
- Department of Zoology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia; The Research Chair of Vaccines for Infectious Disease - Deanship of Scientific Research - King Saud University, Riyadh, Saudi Arabia
| | - Jory Omer Almushawwah
- Department of Zoology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
| | - Dongjin Choi
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- Ro, Jochiwon- Eup, Sejong-city, 30016, Republic of Korea.
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13
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Solaem Akond U, Barman K, Mahanta A, Jasimuddin S. Electrochemical Sensor for Detection of p‐Nitrophenol Based on Nickel Oxide Nanoparticles/α‐Cyclodextrin Functionalized Reduced Graphene Oxide. ELECTROANAL 2020. [DOI: 10.1002/elan.202060450] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | - Koushik Barman
- Department of Chemistry Assam University Silchar Assam-788011 India
- Department of Chemistry Queens College-CUNY Flushing NY, 11367 USA
| | | | - Sk. Jasimuddin
- Department of Chemistry Assam University Silchar Assam-788011 India
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14
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Nanomolar detection of lead using electrochemical methods based on a novel phthalocyanine. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119564] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Dighole RP, Munde AV, Mulik BB, Sathe BR. Bi 2O 3 Nanoparticles Decorated Carbon Nanotube: An Effective Nanoelectrode for Enhanced Electrocatalytic 4-Nitrophenol Reduction. Front Chem 2020; 8:325. [PMID: 32457869 PMCID: PMC7227376 DOI: 10.3389/fchem.2020.00325] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/30/2020] [Indexed: 12/19/2022] Open
Abstract
4-Nitrophenol (4-NP) is present in most industrial waste water resources as an organic pollutant, and is a highly toxic and environmentally hazardous pollutant. Herein, we report that bismuth oxide (Bi2O3) decorated multi-walled carbon nanotubes (Bi2O3@MWCNTs) are the most prominent electrocatalyst for 4-NP electroreduction in acidic conditions. The electrocatalyst is synthesized by a simple chemical reduction method using ethylene glycol as a capping agent. The synthesized Bi2O3@MWCNTs electrocatalyst has been well-characterized by Fourier-transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy. Bi2O3@MWCNTs have a cubic structure which is confirmed by XRD. TEM imaging reveals Bi2O3 NPs are ~2 nm in size, are grown on MWCNTs and that these nanoparticles are active toward 4-NP electroreduction. The electrochemical studies by cyclic voltammetry measurements show that the Bi2O3@MWCNTs electrocatalyst can sense 4-NP at a very low potential i.e., -0.17 vs. saturated calomel electrode (SCE). Furthermore, electroanalytical parameters like scan rate and concentration dependence were studied with electrochemcial impedance spectroscopy (EIS) and the effect of pH on cathodic current was examined under experimental conditions. The lower limit of detection (LOD) was found to be 0.1 μM for the Bi2O3@MWCNTs nanomaterial and is excellent toward 4-NP. The present study has applications for reducing water pollution and for sorting out related issues.
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Affiliation(s)
| | | | | | - Bhaskar R. Sathe
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad, Aurangabad, India
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Puyo M, Fau P, Kahn ML, Mesguich D, Launay J, Fajerwerg K. Removable Composite Electrode Made of Silver Nanoparticles on Pyrolyzed Photoresist Film for the Electroreduction of 4-Nitrophenol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14194-14202. [PMID: 31550887 DOI: 10.1021/acs.langmuir.9b02405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Access to removable nanocomposite electrodes for electrosensing of pollutants is of great importance. However, the preparation of reproducible and reliable carbon electrodes decorated with metallic nanoparticles, a prerequisite for trustworthy devices, remains a challenge. Here we describe an innovative and easy method to prepare such electrodes. These latter are silicon-coated with a thin carbon film on which controlled silver nanostructures are grafted. Different silver nanostructures and surface coverage of the carbon electrode (16, 36, 51, and 67%) can be obtained through a careful control of the time of the hydrogenolysis of the N-N' isopropyl butylamidinate silver organometallic precursor (t = 1, 5, 15, and 60 min, respectively). Importantly, all nanocomposite surfaces are efficient for the electrodetection of 4-nitrophenol with a remarkable decrease of the overpotential of the reduction of such molecule up to 330 mV. The surfaces are characterized by atomic force microscopy, grazing incidence X-ray diffraction, scanning electronic microscopy, and Raman spectroscopy. Furthermore, surface-enhanced Raman scattering effect is also observed. The exaltation of the Raman intensity is proportional to the surface coverage of the electrode; the number of hot spots increases with the surface coverage.
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Affiliation(s)
- Maxime Puyo
- LCC-CNRS , University of Toulouse , 205 route de Narbonne , F-31077 Toulouse , France
| | - Pierre Fau
- LCC-CNRS , University of Toulouse , 205 route de Narbonne , F-31077 Toulouse , France
| | - Myrtil L Kahn
- LCC-CNRS , University of Toulouse , 205 route de Narbonne , F-31077 Toulouse , France
| | - David Mesguich
- CIRIMAT , University of Toulouse, CNRS, Université Toulouse 3 Paul-Sabatier , 118 route de Narbonne , F-31062 Toulouse cedex 9 , France
| | - Jérôme Launay
- LAAS-CNRS , University of Toulouse , 7 avenue du colonel Roche , F-31077 Toulouse , France
| | - Katia Fajerwerg
- LCC-CNRS , University of Toulouse , 205 route de Narbonne , F-31077 Toulouse , France
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