1
|
Sriram B, Stanley MM, Wang SF, Hsu YF, George M. Two-Dimensional CuMn-Layered Double Hydroxides: A Study of Interlayer Anion Variants on the Electrochemical Sensing of Trichlorophenol. Inorg Chem 2024; 63:2833-2843. [PMID: 38261278 PMCID: PMC10848258 DOI: 10.1021/acs.inorgchem.3c04568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024]
Abstract
Despite their diverse application profile, aromatic organochlorides such as 2,4,6-trichlorophenol (TP) are widely renowned for creating a negative toll on the balance of the ecosystem. Strict regulatory regimes are required to limit exposure to such organic pollutants. By deployment of a straightforward detection scheme, electrochemical sensing technology offers a competitive edge over the other techniques and practices available for pollutant monitoring. Here, we present a streamlined hydrothermal approach for synthesizing copper-manganese layered double hydroxide (CuMn-LDH) rods to be employed as electrocatalysts for detecting TP in various media. With a focused intention to leverage the full potential of the prepared CuMn-LDHs, the interlamellar region is configured using a series of intercalants. Further, a thorough comparative analysis of their structures, morphologies, and electrochemical performance is accomplished using various analytical techniques. The electrocatalytic oxidation ability of the CuMn-LDH toward TP molecules is markedly altered by incorporating various anions into the gallery region. The dynamic attributes of the developed sensor, such as a wide linear response (0.02-289.2 μM), a low detection limit (0.0026 μM), and good anti-interfering ability, acclaim its superior viability for real-time detection of TP with exceptional tolerance to the presence of foreign moieties. Hence, this work manifests that the nature of intercalants is a vital aspect to consider while designing LDH-based electrochemical probes to detect priority pollutants.
Collapse
Affiliation(s)
- Balasubramanian Sriram
- Department
of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan
| | - Megha Maria Stanley
- Department
of Chemistry, Stella Maris College, Affiliated
to the University of Madras, Chennai, Tamil Nadu 600086, India
| | - Sea-Fue Wang
- Department
of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan
| | - Yung-Fu Hsu
- Department
of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan
| | - Mary George
- Department
of Chemistry, Stella Maris College, Affiliated
to the University of Madras, Chennai, Tamil Nadu 600086, India
| |
Collapse
|
2
|
Xu Z, Jin X, Li Y, Zhang M, Yin W, Yang Y, Jia W, Xie D. Conductive imprinted polymeric interfacially modified electrochemical sensors based on covalently bonded layer-by-layer assembly of Gr/Au with flower-like morphology for sensitive detection of 2,4,6-TCP. RSC Adv 2024; 14:3834-3840. [PMID: 38274160 PMCID: PMC10809438 DOI: 10.1039/d3ra06668a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 12/07/2023] [Indexed: 01/27/2024] Open
Abstract
Polymeric membrane sensors based on molecular imprinted polymers (MIPs) have been attractive analytical tools for detecting organic species. However, the MIPs in electrochemical sensors developed so far are usually prepared by in situ polymerization of pre-polymers and non-covalent adsorption on the surface of the working electrode. Meanwhile, the MIPs in the electrochemical sensors developed are typically made of a non-conductive polymer film. This results in a relatively low current due to the lack of electron transfer. Additionally, the smoothness of the traditional electrochemical substrate results in a low specific surface area, which reduces the sensitivity of the electrochemical sensor. Here, we describe a novel electrochemical sensor with a conductive interface and MIPs modification. The electrochemical sensor was modified by covalent coupled layer by layer self-assembly with the imprinted polymer film. The incorporation of these two conductive functional materials improves the conductivity of the electrodes and provides interface support materials to obtain high specific surface area. By using 2,4,6-trichlorophenol as the model, the sensitivity of the developed conductive sensor was greatly improved compared to that of the traditional MIPs sensor. We believe that the proposed MIPs-based sensing strategy provides a general and convenient method for making sensitive and selective electrochemical sensors.
Collapse
Affiliation(s)
- Ziang Xu
- College of Chemistry and Environmental Science, Hebei University Baoding 071002 China
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Xiangying Jin
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Yuqing Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Manwen Zhang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Wenhua Yin
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Yanyan Yang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Wenchao Jia
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| | - Danping Xie
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment Guangzhou 510655 China
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Rajaji U, Raghu MS, Yogesh Kumar K, Almutairi TM, Mohammed AA, Juang RS, Liu TY. A sonochemical synthesis of SrTiO 3 supported N-doped graphene oxide as a highly efficient electrocatalyst for electrochemical reduction of a chemotherapeutic drug. ULTRASONICS SONOCHEMISTRY 2023; 93:106293. [PMID: 36638650 PMCID: PMC9852652 DOI: 10.1016/j.ultsonch.2023.106293] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 06/03/2023]
Abstract
A sonochemical based green synthesis method playa powerful role in nanomaterials and composite development. In this work, we developed a perovskite type of strontium titanate via sonochemical process. SrTiO3 particles were incorporated with nitrogen doped graphene oxide through simple ultrasonic irradiation method. The SrTiO3/NGO was characterized by various analytical methods. The nanocomposite of SrTiO3/NGO was modified with laser-induced graphene electrode (LIGE). The SrTiO3/NGO/LIGE was applied for electrochemical sensor towards chemotherapeutic drug detection (nilutamide). Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques have been used to examine the electrochemical performance of nilutamide (anti-cancer drug). DPV was found to be more sensitive and found to exhibit a sensitivity 8.627 µA µM-1 cm-2 for SrTiO3/NGO/LIGE with a wide linear range (0.02-892 µM) and low Limit of detection (LOD: 1.16 µM). SrTiO3/NGO/LIGE has been examined for the detection of nilutamide in blood serum and urine samples and obtained a good recovery in the range of 97.2-99.72 %. The enhanced stability and selectivity and practical application results indicates the suitability of SrTiO3/NGO/LIGE towards the detection of nilutamide drug in pharmaceutical industries.
Collapse
Affiliation(s)
- Umamaheswari Rajaji
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan
| | - M S Raghu
- Department of Chemistry, New Horizon College of Engineering, Outer Ring Road, Bangalore 560103, India
| | - K Yogesh Kumar
- Department of Chemistry, Faculty of Engineering and Technology, Jain University, Bangalore 562112, India; Korea University of Technology and Education, Cheonan-si 31253, Chungcheongnam-do, Cheonan-si, Republic of Korea
| | - Tahani M Almutairi
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - AbdallahA A Mohammed
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ruey-Shin Juang
- Department of Chemical and Materials Engineering, Chang Gung University 259 Wenhua First Road Guishan, Taoyuan 33302, Taiwan; Division of Nephrology, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou, Taiwan; Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, Taishan, New Taipei City 243303, Taiwan.
| | - Ting-Yu Liu
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Research Center for Intelligent Medical Devices, Center for Plasma and Thin Film Technologies, Ming Chi University of Technology, New Taipei City 243303, Taiwan.
| |
Collapse
|
5
|
Santhan A, Hwa KY, Ganguly A. Self-assembled nanorods with reduced graphene oxide as efficient nano-catalyst for dual modality sensing of hazardous phenolic compound. CHEMOSPHERE 2022; 307:135715. [PMID: 35843434 DOI: 10.1016/j.chemosphere.2022.135715] [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: 04/06/2022] [Revised: 06/13/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
The modern development in the agricultural production has huge influential factors being highly beneficial and also includes some health hazards. Under the class of chlorophenols, 2,4,6-trichlorophenol is a widely used chemical which remains as a major pollutant in the environment. The detection of 2,4,6-trichlorophenol was initiated as a controlling measure to decrease the seriousness prevailing in the ecosystem. The electrochemical and UV-vis absorption sensing platform are simple and low-cost detection techniques with precise and sensitive analysis. Cadmium tin oxide integrated with the reduced graphene oxide was employed as a nanohybrid for the construction of the working electrode. The structural and morphological analysis confirmed the high degree of crystallinity of the nanocomposite with nanorod formation. The high surface area, with high charge carrier mobility, and increased electrical conductivity of the material boosted the 2,4,6-trichlorophenol detection. The active surface area was calculated to be 0.068 cm-1, 0.089 cm-1, 0.118 cm-1 and 0.146 cm-1 for all the modified electrodes. The resistance of the electrodes was about 91.4 Ω, 72.9 Ω, 48.8 Ω and 41.6 Ω. The linear range of 2,4,6-trichlorophenol was 0.019 μM-0.299 μM and 1.299 μM-1678.97 μM in electrochemical sensing and 10.99 μM-24.84 μM in UV detection. The obtained limit of detection with the formulation 3σ/SD was about 3.05 nM and 80 nM with sensitivity about 14.01 μA μM-1 cm-2. The real sample detection in environmental real samples showed good recovery results. The specific selectivity, good repeatability, reproducibility and stability analysis proves the good sensing parameters. Thus, the fabricated electrode is highly sufficient of sensing 2,4,6-trichlorophenol. These excellent features of the material can be applied for several other applications which will provide good performances.
Collapse
Affiliation(s)
- Aravindan Santhan
- Graduate Institute of Energy and Optoelectronic Materials, National Taipei University of Technology, Taipei, Taiwan; Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Kuo-Yuan Hwa
- Graduate Institute of Energy and Optoelectronic Materials, National Taipei University of Technology, Taipei, Taiwan; Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan; Center for Biomedical Industry, National Taipei University of Technology, Taipei, Taiwan.
| | - Anindita Ganguly
- Graduate Institute of Energy and Optoelectronic Materials, National Taipei University of Technology, Taipei, Taiwan; Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
| |
Collapse
|
6
|
Mohamed M, Gondal M, Hassan M, Khan A, Surrati A, Almessiere M. Exceptional co-catalysts free SrTiO3 perovskite coupled CdSe nanohybrid catalyst by green pulsed laser ablation for electrochemical hydrogen evolution reaction. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
7
|
Maheshwaran S, Renganathan V, Chen SM, Balaji R, Kao CR, Chandrasekar N, Ethiraj S, Samuel MS, Govarthanan M. Hydrothermally constructed AgWO 4-rGO nanocomposites as an electrode enhancer for ultrasensitive electrochemical detection of hazardous herbicide crisquat. CHEMOSPHERE 2022; 299:134434. [PMID: 35351476 DOI: 10.1016/j.chemosphere.2022.134434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/10/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
The advancements in electrode materials with high efficiency has been prioritized to effectively monitor the presence of harmful pesticides concerning the environment. In such a way, we hydrothermally constructed a hybrid AgWO4-rGO nanocomposites for the rapid electrochemical detection of crisquat (CQT). The structural, compositional, morphological and topographical characterization for AgWO4-rGO nanocomposites is thoroughly performed to understand its electrocatalytic properties. The AgWO4-rGO nanocomposites are used as an electrode enhancer (rGO@AgWO4/GCE) for the electrochemical investigations towards CQT detection. The results indicated that the rGO@AgWO4/GCE possessed an excellent catalytic activity with a wide linear detection range 1-1108 μM coupled with an ultrasensitive limit of detection (LOD) 0.0661 μM for electrochemical CQT detection. The rGO@AgWO4/GCE CQT sensor also expressed remarkable sensitivity of 0.6306 μAμM-1cm-2 in addition to good selectivity and reproducibility. Furthermore, the commercial CQT, river water, tap water and washed vegetable water are used as a representative for real world analysis using rGO@AgWO4/GCE and results are highly appreciable for the real time CQT detection. Our work proposes a novel hybrid rGO@AgWO4 nanocomposites reinforced electrodes for ultra-trace level CQT detection with good reliability and can be advocated for real time detection of pesticides.
Collapse
Affiliation(s)
- Selvarasu Maheshwaran
- 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.
| | - Ramachandran Balaji
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - C R Kao
- Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan.
| | - Narendhar Chandrasekar
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India
| | - Selvarajan Ethiraj
- Department of Genetic Engineering, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Melvin S Samuel
- Department of Material Science and Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India
| |
Collapse
|
8
|
Ozcelikay G, Karadurmus L, Bilge S, Sınağ A, Ozkan SA. New analytical strategies Amplified with 2D carbon nanomaterials for electrochemical sensing of food pollutants in water and soils sources. CHEMOSPHERE 2022; 296:133974. [PMID: 35181423 DOI: 10.1016/j.chemosphere.2022.133974] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 01/13/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
Pharmaceutical and food pollutants have threatened global health. Pharmacotherapy has left a positive impression in the field of health and life of people and animals. However, the many unresolved problems brought along with residues of pharmaceuticals in the environmental and food. Consumption of the world's freshwater resources, toxic chemicals, air pollution, plastic waste directly affects water and soil resources. Pesticides have a wide role in pollutants. Therefore, the determination of pesticides is significant to eliminate their negative effects on living things. Nowadays, there are many analytical methods available. However, new analysis methods are still being researched due to certain limitations of traditional methods. Electrochemical sensors have drawn attention because of their superior properties, such as short analysis time, affordability, high sensitivity, and selectivity. The development of new analytical strategies for assessing risks from pharmaceutical to food pollutants in water and soil sources is important for the measurement of different pollutants. Moreover, the 2D-carbon nanomaterials used in the development of electrochemical sensors are widely utilized to enlarge the surface area, increase porosity, and make easy immobilization. Graphene (graphene derivations) and carbon nanotubes integrated nanosensors are widely used for the determination of pesticides. 2D-carbon nanomaterials can be tailored according to the purpose of the study. The characterization and synthesis methods of 2D-carbon nanomaterials are widely explained. Furthermore, enzyme nanobiosensors, especially Acetylcholinesterase (AChE), are widely used to determine pesticides. The three main topics are focused on in this review: 2D-carbon nanomaterials, pesticides that threaten life, and the application of 2D-carbon nanomaterials-based electrochemical sensors. The various developed 2D-carbon nanomaterials-based electrochemical sensors were applied in pharmaceutical forms, fruits, tap/lake water, beverages, and soils sources. This work aims to indicate the recently published paper related to pesticide analysis and highlight the importance of 2D-nanomaterials on sensors.
Collapse
Affiliation(s)
- Goksu Ozcelikay
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560, Ankara, Turkey
| | - Leyla Karadurmus
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560, Ankara, Turkey; Adıyaman University, Faculty of Pharmacy, Department of Analytical Chemistry, Adıyaman, Turkey
| | - Selva Bilge
- Ankara University, Faculty of Science, Department of Chemistry, 06100, Ankara, Turkey
| | - Ali Sınağ
- Ankara University, Faculty of Science, Department of Chemistry, 06100, Ankara, Turkey
| | - Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560, Ankara, Turkey.
| |
Collapse
|
9
|
Modification of glassy carbon electrode with manganese cobalt oxide-cubic like structures incorporated graphitic carbon nitride sheets for the voltammetric determination of 2,4,6 -trichlorophenol. Mikrochim Acta 2022; 189:205. [PMID: 35488133 DOI: 10.1007/s00604-022-05305-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 04/02/2022] [Indexed: 02/01/2023]
Abstract
Novel cube-like transition metal oxide embedded on graphitic carbon nitride (MCO@GCN) formed a hybrid composite via hydrothermal assisted sonochemical synthesis. The synthesized composite was examined with various physical characterizations such as morphological SEM, EDX, XRD, and FT-IR spectroscopy. The electrocatalytic activity of MCO@GCN composite was further investigated when used to modify a glassy carbon electrode (GCE). The electrochemical sensor was investigated using modified MCO@GCN/GCE towards environmental pollutant 2,4,6-trichlorophenol (2,4,6-TCP) detection with at a potential of (+ 0.654 V vs Ag/AgCl) in pH-7. The structural features have favored a high charge transfer ratio with excellent conductivity which showed a low detection limit (LOD) of 0.0068 μM and sensitivity of 23.57 μA·μM-1·cm-2 comprising a wide linear working range of 0.01-1720 μM by using differential pulse voltammetry. Besides, the MCO@GCN/GCE displayed excellent selectivity , repeatability, reproducibility, storage, and operational stability. Notably, the proposed MCO@GCN/GCE was validated with different environmental samples (tap, river, and industrial water) with RSD 0.62-2.86% and 96.51-99.66% (n = 3) recovery.
Collapse
|
10
|
Balaji R, Maheshwaran S, Chen SM, Tamilalagan E, Chandrasekar N, Ethiraj S, Samuel MS. Fabricating BiOI nanostructures armed catalytic strips for selective electrochemical and SERS detection of pesticide in polluted water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 296:118754. [PMID: 34973381 DOI: 10.1016/j.envpol.2021.118754] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/08/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
We have constructed a dual mode catalytic strip equipped with 2D BiOI nanostructures and deployed for dual mode detection sensing of hazardous trichlorophenol (TCP). Synthesized BiOI nanostructures are investigated for its crystal architecture, morphology and chemical composition. The BiOI are loaded onto the catalytic strips with the assistance of gravity offered drying process. The BiOI nanostructures offers a very less charge transfer resistance indicating its superior catalytic properties upon the electrochemical impedance studies. It reflected on providing an excellent limit of detection (LOD) and linear sensing range for TCP in electrochemical mode. For SERS, a thin plasmonic Au layer is sputter coated on BiOI equipped catalytic strips (Au@BiOI) for the TCP detection. An impressive enhancement factor of 107 is obtained for SERS detection of TCP with good LOD of 10-10 M. Fabricated dual mode BiOI based strips are thoroughly examined for operational stability and performance in real time conditions. The fabricated high performance dual mode platform for the detection of hazardous pesticides appears to be a promising prospect for the on-the-spot investigation.
Collapse
Affiliation(s)
- Ramachandran Balaji
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan, ROC
| | - Selvarasu Maheshwaran
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan, ROC
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan, ROC.
| | - Elayappan Tamilalagan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan, ROC
| | - Narendhar Chandrasekar
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India
| | - Selvarajan Ethiraj
- Department of Genetic Engineering, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Melvin S Samuel
- Department of Material Science and Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| |
Collapse
|
11
|
Zamperlin N, Ceccato R, Fontana M, Pegoretti A, Chiappini A, Dirè S. Effect of Hydrothermal Treatment and Doping on the Microstructural Features of Sol-Gel Derived BaTiO 3 Nanoparticles. MATERIALS 2021; 14:ma14154345. [PMID: 34361539 PMCID: PMC8348855 DOI: 10.3390/ma14154345] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/02/2022]
Abstract
Barium Titanate (BaTiO3) is one of the most promising lead-free ferroelectric materials for the development of piezoelectric nanocomposites for nanogenerators and sensors. The miniaturization of electronic devices is pushing researchers to produce nanometric-sized particles to be embedded into flexible polymeric matrices. Here, we present the sol-gel preparation of crystalline BaTiO3 nanoparticles (NPs) obtained by reacting barium acetate (Ba(CH3COO)2) and titanium (IV) isopropoxide (Ti(OiPr)4). The reaction was performed both at ambient conditions and by a hydrothermal process carried on at 200 °C for times ranging from 2 to 8 h. Doped BaTiO3 nanoparticles were also produced by addition of Na, Ca, and Bi cations. The powders were annealed at 900 °C in order to improve NPs crystallinity and promote the cubic-to-tetragonal (c⟶t) phase transformation. The microstructural features of nanoparticles were investigated in dependence of both the hydrothermal reaction time and the presence of dopants. It is found that short hydrothermal treatment (2 h) can produce BaTiO3 spherical and more homogeneous nanoparticles with respect to longer hydrothermal treatments (4 h, 6 h, 8 h). These particles (2 h) are characterized by decreased dimension (approx. 120 nm), narrower size distribution and higher tetragonality (1.007) in comparison with particles prepared at ambient pressure (1.003). In addition, the short hydrothermal treatment (2 h) produces particles with tetragonality comparable to the one obtained after the longest process (8 h). Finally, dopants were found to affect to different extents both the c⟶t phase transformation and the crystallite sizes.
Collapse
Affiliation(s)
- Nico Zamperlin
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
- Correspondence:
| | - Riccardo Ceccato
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
| | - Marco Fontana
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
- Institute of Mechanical Intelligence, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Alessandro Pegoretti
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via G. Giusti, 9, 50121 Firenze, Italy
| | - Andrea Chiappini
- Institute of Photonics and Nanotechnologies (IFN-CNR), CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy;
| | - Sandra Dirè
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
| |
Collapse
|