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Darvishi S, Ensafi AA, Mousaabadi KZ. Design and fabrication of electrochemical sensor based on NiO/Ni@C-Fe 3O 4/CeO 2 for the determination of niclosamide. Sci Rep 2024; 14:7576. [PMID: 38555408 PMCID: PMC10981725 DOI: 10.1038/s41598-024-58319-w] [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: 12/13/2023] [Accepted: 03/27/2024] [Indexed: 04/02/2024] Open
Abstract
In this study, we aimed to enhance and accelerate the electrochemical properties of a glassy carbon-based voltammetric sensor electrode. This was achieved through the modification of the electrode using a nanocomposite derived from a metal-organic framework, which was embedded onto a substrate consisting of metal oxide nanoparticles. The final product was an electrocatalyst denoted as NiO/Ni@C-Fe3O4/CeO2, tailored for the detection of the drug niclosamide. Several techniques, including FT-IR, XRD, XPS, FE-SEM, TEM, and EDS, were employed to characterize the structure and morphology of this newly formed electroactive catalyst. Subsequently, the efficiency of this electrocatalyst was evaluated using cyclic voltammetry and electrochemical impedance spectroscopy techniques. Differential pulse voltammetry was also utilized to achieve heightened sensitivity and selectivity. A comprehensive exploration of key factors such as the catalyst quantity, optimal instrumental parameters, scan rate influence, and pH effect was undertaken, revealing a well-regulated reaction process. Furthermore, the sensor's analytical performance parameters were determined. This included establishing the linear detection range for the target compound within a specified concentration interval of 2.92 nM to 4.97 μM. The detection limit of 0.91 nM, repeatability of 3.1%, and reproducibility of 4.8% of the sensor were calculated, leading to the observation of favorable stability characteristics. Conclusively, the developed electrochemical sensor was successfully employed for the quantification of niclosamide in urine samples and niclosamide tablets. This application highlighted not only the sensor's high selectivity but also the satisfactory and accurate outcomes obtained from these measurements.
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Affiliation(s)
- Setayesh Darvishi
- Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Ali A Ensafi
- Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, 72701, USA.
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Mallik G, Kabiraj A, Swain DK, Dash PP, Kumari P, Rath S. Entropy-driven nonequilibrium phonon-stimulated electron-phonon coupling in tin dioxide nanorods. Phys Rev E 2024; 109:024213. [PMID: 38491670 DOI: 10.1103/physreve.109.024213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 01/15/2024] [Indexed: 03/18/2024]
Abstract
Nonequilibrium (NEQ) phonon fluctuation in a nanosystem has been studied through the statistical assessment of the entropy-production and -consumption events in ultrasmall tin dioxide (SnO_{2}) nanorods. Size- and shape-dependent alteration in free energy leading to modulation of the probability distribution function of the phonon dynamics has been observed from the x-ray diffraction and Raman scattering characterizations. The Gallavotti-Cohen nonequilibrium fluctuation theorem has been utilized to qualitatively describe the aforementioned behaviors under the influence of a global flux. The observation of entropy consumption and thermodynamically favorable entropy-production events indicates the presence of NEQ fluctuations in the phonon modes. The effective energy scale of fluctuation in driven phonon modes, dissipating energy faster than relaxation time, is quantified on the order of nanojoules. From optical absorption and photoluminescence studies, the observation of the electron-phonon coupled state confirms the interaction of the NEQ phonons with electrons. The strength of the coupling has been estimated from the temperature-independent Barry center shift and found to be enhanced to 5.35. Valence band x-ray photoelectron spectroscopy and Fourier transformed infrared spectroscopy analyses reconcile NEQ phonon mediated alteration of the valence band density of states, activation of silent phonon modes, and superior excitonic transitions, suitable for the new generation of ultrafast quantum device applications.
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Affiliation(s)
- G Mallik
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Jatni-752050, Khordha, Odisha, India
| | - A Kabiraj
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Jatni-752050, Khordha, Odisha, India
| | - D K Swain
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Jatni-752050, Khordha, Odisha, India
| | - P P Dash
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Jatni-752050, Khordha, Odisha, India
| | - P Kumari
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Jatni-752050, Khordha, Odisha, India
| | - S Rath
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Jatni-752050, Khordha, Odisha, India
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Liu P, Sivakov V. Tin/Tin Oxide Nanostructures: Formation, Application, and Atomic and Electronic Structure Peculiarities. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2391. [PMID: 37686899 PMCID: PMC10490065 DOI: 10.3390/nano13172391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 09/10/2023]
Abstract
For a very long period, tin was considered one of the most important metals for humans due to its easy access in nature and abundance of sources. In the past, tin was mainly used to make various utensils and weapons. Today, nanostructured tin and especially its oxide materials have been found to possess many characteristic physical and chemical properties that allow their use as functional materials in various fields such as energy storage, photocatalytic process, gas sensors, and solar cells. This review discusses current methods for the synthesis of Sn/SnO2 composite materials in form of powder or thin film, as well as the application of the most advanced characterization tools based on large-scale synchrotron radiation facilities to study their chemical composition and electronic features. In addition, the applications of Sn/SnO2 composites in various fields are presented in detail.
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Affiliation(s)
- Poting Liu
- Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein Str. 9, 07745 Jena, Germany;
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Vladimir Sivakov
- Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein Str. 9, 07745 Jena, Germany;
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Jasrotia T, Dhiman N, Sharma N, Singh A, Chaudhary S, Chaudhary GR, Kumar R. Biomonitoring and risk assessment of naturally and chemically synthesized iron-oxide nanoparticles: A comparative approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 872:161960. [PMID: 36739026 DOI: 10.1016/j.scitotenv.2023.161960] [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: 12/27/2022] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Nanostructured oxides and oxyhydroxides of iron are imperative constituents of the Earth's geological and biological processes i.e. biogeochemical cycles. So, the characteristic applications of iron oxide nanoparticles (FeONps) are closely linked to their surroundings and biological sinks. This work reports a low-cost green approach to promote 'waste-to-wealth' ideology by the direct and self-catalysis of iron rust into its nanoparticles (N-FeONps). A comparison is drawn based on the properties, morphologies, and applications after synthesizing FeONps by chemical precipitation method (C-FeONps). Spherical nanoparticles with vibrational properties are obtained in the size domain of 32 nm (N-FeONps) and 23 nm (C-FeONps). The application of Uniform deformation model, Uniform stress deformation model, Uniform deformation energy density model, and Size-strain plot models reveal comparatively greater defects in the crystal structures of C-FeONps. The biosafety profiling of natural and chemically designed nano-units performed on the species of bacteria, fungus, algae, and plants have shown enhanced safety terms associated with N-FeONps. The performance of N-FeONps has surpassed its chemical counterpart in medical applications such as antioxidant activity and anti-inflammatory activity with approximate percentages of 26 % and 51 % respectively. The findings of this piece of work favors the naturally obtained FeONps (N-FeONps), as they are economically viable, non-toxic, and have a greater antioxidant and anti-inflammatory arena. Hence, this waste-to-wealth ideology should be promoted for maintaining waste and designing solutions for the medical industries in one go.
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Affiliation(s)
- Teenu Jasrotia
- Department of Environment Studies, Panjab University, Chandigarh 160014, India; Department of Chemistry & Centre of Advanced studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Nikita Dhiman
- Department of Environment Studies, Panjab University, Chandigarh 160014, India
| | - Neha Sharma
- Department of Environment Studies, Panjab University, Chandigarh 160014, India
| | - Avtar Singh
- Research and Development, Molekule Inc, 3802 Spectrum Blvd., Tampa, FL 33612, United States of America; Department of Chemistry, Sri Guru Teg Bahadur Khalsa College, Anandpur Sahib, Punjab 140118, India
| | - Savita Chaudhary
- Department of Chemistry & Centre of Advanced studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Ganga Ram Chaudhary
- Department of Chemistry & Centre of Advanced studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Rajeev Kumar
- Department of Environment Studies, Panjab University, Chandigarh 160014, India.
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Khan MZ, Gul IH, Baig MM, Akram MA. Facile synthesis of a multifunctional ternary SnO2/MWCNTs/PANI nanocomposite: Detailed analysis of dielectric, electrochemical, and water splitting applications. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Colossal dielectric constant, electric modulus and electrical conductivity of nanocrystalline SnO2: Role of Zr/Mn, Fe or Co dopants. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.122902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Arumugam S, Sivaprakash P, Dixit A, Chaurasiya R, Govindaraj L, Sathiskumar M, Chatterjee S, Suryanarayanan R. Complex magnetic structure and magnetocapacitance response in a non-oxide NiF 2 system. Sci Rep 2019; 9:3200. [PMID: 30824711 PMCID: PMC6397207 DOI: 10.1038/s41598-019-39083-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 01/09/2019] [Indexed: 11/08/2022] Open
Abstract
We report here on the complex magnetic structure and magnetocapacitance in NiF2, a non-oxide multifunctional system. It undergoes an anti-ferromagnetic transition near 68.5 K, superimposed with canted Ni spin driven weak ferromagnetic ordering, followed by a metastable ferromagnetic phase at or below 10 K. Our density functional calculations account for the complex magnetic structure of NiF2 deduced from the temperature and the field dependent measurements. Near room temperature, NiF2 exhibits a relatively large dielectric response reaching >103 with a low dielectric loss of <0.5 at frequencies >20 Hz. This is attributed to the intrinsic grain contribution in contrast to the grain boundary contribution in most of the known dielectric materials. The response time is 10 μs or more at 280 K. The activation energy for such temperature dependent relaxation is ~500 meV and is the main source for grain contribution. Further, a large negative magneto capacitance >90% is noticed in 1 T magnetic field. We propose that our findings provide a new non-oxide multifunctional NiF2, useful for dielectric applications.
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Affiliation(s)
- S Arumugam
- Center for High Pressure Research, School of Physics, Bharathidasan University, Tiruchirappalli, 620 024, India.
| | - P Sivaprakash
- Center for High Pressure Research, School of Physics, Bharathidasan University, Tiruchirappalli, 620 024, India
| | - Ambesh Dixit
- Department of Physics & C for Solar Energy, Indian Institute of Technology Jodhpur, 342 037, Jodhpur, India
| | - Rajneesh Chaurasiya
- Department of Physics & C for Solar Energy, Indian Institute of Technology Jodhpur, 342 037, Jodhpur, India
| | - L Govindaraj
- Center for High Pressure Research, School of Physics, Bharathidasan University, Tiruchirappalli, 620 024, India
| | - M Sathiskumar
- Center for High Pressure Research, School of Physics, Bharathidasan University, Tiruchirappalli, 620 024, India
| | - Souvik Chatterjee
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, Kolkata, 700 098, India
| | - R Suryanarayanan
- Retired ICMMO, University of Paris- Sud, Orsay, 91405, France
- 3, allée des Marronniers, Les Ulis, 91940, France
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