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Hoang DT, Pham VN, Yu H, Kwak IH, Baik J, Kim HS, Lee H. Enhanced Photocatalytic Activities of Sodium Borohydride-Calcined Magnetic Manganese Ferrite Nanoparticles. Inorg Chem 2024. [PMID: 38870407 DOI: 10.1021/acs.inorgchem.4c00993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The synthesis, enhancement, and maintenance of magnetite-based catalyst nanoparticles (NPs) are important for photocatalytic activity and recovery rates. We used a sodium borohydride (NaBH4) calcination method to modify MnFe2O4 nanoparticles to optimize their performance in the photocatalytic oxidation of 2,5-hydroxymethylfurfural. The results indicated a 94% increase in photocatalytic efficiency, while magnetic assessments performed using a vibrating sample magnetometer showed an 8.9% improvement in magnetic properties without degradation. These findings show the dual benefits of increased photocatalytic performance with strong magnetic properties, which are important for the application and reusability of photocatalysts. The recycling of these photocatalysts reduces secondary pollution and increases the process cost-effectiveness. These results contribute to the solution of problems with the use of photocatalytic materials.
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Affiliation(s)
- Dung Thanh Hoang
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Vy Ngoc Pham
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Hyejin Yu
- Department of Chemistry, Pukyong National University, Busan 48513, Republic of Korea
| | - In Hye Kwak
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Jaeyoon Baik
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang 37673, Republic of Korea
| | - Hyun Sung Kim
- Department of Chemistry, Pukyong National University, Busan 48513, Republic of Korea
| | - Hangil Lee
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, Republic of Korea
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Jabeen T, Khan MS, Javaid S, Azeem W, Ayoub R, Motola M. Synergistic effects of β-NaFeO 2 ferrite nanoparticles for photocatalytic degradation, antibacterial, and antioxidant applications. RSC Adv 2024; 14:12513-12527. [PMID: 38633481 PMCID: PMC11022939 DOI: 10.1039/d4ra02430c] [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: 03/30/2024] [Accepted: 04/12/2024] [Indexed: 04/19/2024] Open
Abstract
Here, synthesis and thorough characterization of β-NaFeO2 nanoparticles utilizing a co-precipitation technique is presented. XRD analysis confirmed a hexagonal-phase structure of β-NaFeO2. SEM revealed well-dispersed spherical nanoparticles with an average diameter of 45 nm. The FTIR spectrum analysis revealed weak adsorption bands at 1054 cm-1 suggested metal-metal bond stretching (Fe-Na). UV-Visible spectroscopy indicates a 4.4 eV optical band gap. Colloidal stability of β-NaFeO2 was evidenced via Zeta potential (-28.5 mV) and Dynamic Light Scattering (DLS) measurements. BET analysis reveals a substantial 343.27 m2 g-1 surface area with mesoporous characteristics. Antioxidant analysis indicates efficacy comparable to standard antioxidants, while concentration-dependent antibacterial effects suggest enhanced efficacy against Gram-positive bacteria, particularly Streptococcus. The Photocatalytic activity of β-NaFeO2 showed significant pollutant degradation (>90% efficiency), with increased degradation rates at higher nanoparticle concentrations, indicating potential for environmental remediation applications.
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Affiliation(s)
- Tahira Jabeen
- Institute of Physics, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan +923016979528 +923006421403
| | - Muhammad Shahid Khan
- Institute of Physics, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan +923016979528 +923006421403
| | - Sana Javaid
- Institute of Physics, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan +923016979528 +923006421403
| | - Waqar Azeem
- Faculty of Resilience, Rabdan Academy Abu Dhabi United Arab Emirates
| | - Rabia Ayoub
- Institute of Physics, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan +923016979528 +923006421403
| | - Martin Motola
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava Ilkovicova 6 842 15 Bratislava Slovakia +421 2 9014 9374
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Aggelopoulos CA, Dolinski O. A comprehensive insight on plasma-catalytic degradation of organic pollutants in water: Comparison between ZnO and TiO 2. CHEMOSPHERE 2024; 347:140667. [PMID: 37951406 DOI: 10.1016/j.chemosphere.2023.140667] [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: 08/24/2023] [Revised: 10/30/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
A novel system combining underwater plasma bubbles and high voltage nanopulses was combined for the first time with ZnO and TiO2 for the degradation of organic pollutants in water. The effect of catalyst loading, discharge power and plasma gas on pollutant degradation was investigated whereas the plasma-catalytic mechanism was explored through the quantification of plasma species, COD/TOC measurements and scavenging experiments in the presence and absence of catalysts. The increased efficiency in the presence of either ZnO or TiO2, especially under plasma gases (air and oxygen) able to produce UV radiation in the range of wavelengths absorbed by both catalysts, lies on the increased concentration of the critical reactive species (e.g. ·O2-, ·ΟΗ, H2O2). Compared to plasma alone process, H2O2 was significantly enhanced in the presence of TiO2 and decreased in the presence of ZnO, whereas ·OH concentration was higher in the plasma-ZnO but lower in the plasma-TiO2 system which supports the overall superior performance of ZnO compared to TiO2. The synergy of plasma-ZnO process compared to that of plasma-TiO2 was ∼2.4 and ∼1.5 times higher for Orange II (OII) and Methylene Blue (MB), respectively, exhibiting a very low electrical energy per order (1.4 kWh m-3 for OII and 0.31 kWh m-3 or MB). The present effort contributes on providing fundamental insights and further expand of plasma-catalysis for water treatment.
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Affiliation(s)
- C A Aggelopoulos
- Laboratory of Cold Plasma and Advanced Techniques for Improving Environmental Systems, Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICE-HT), 26504, Patras, Greece.
| | - O Dolinski
- Laboratory of Cold Plasma and Advanced Techniques for Improving Environmental Systems, Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICE-HT), 26504, Patras, Greece
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Salih SJ, Mahmood WM. Review on magnetic spinel ferrite (MFe 2O 4) nanoparticles: From synthesis to application. Heliyon 2023; 9:e16601. [PMID: 37274649 PMCID: PMC10238938 DOI: 10.1016/j.heliyon.2023.e16601] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 05/09/2023] [Accepted: 05/22/2023] [Indexed: 06/06/2023] Open
Abstract
Magnetic spinel ferrite materials offer various applications in biomedical, water treatment, and industrial electronic devices, which has sparked a lot of attention. This review focuses on the synthesis, characterization, and applications of spinel ferrites in a variety of fields, particularly spinel ferrites with doping. Spinel ferrites nanoparticles doped with the elements have remarkable electrical and magnetic properties, allowing them to be used in a wide range of applications such as magnetic fields, microwave absorbers, and biomedicine. Furthermore, the physical properties of spinel ferrites can be modified by substituting metallic atoms, resulting in improved performance. The most recent and noteworthy applications of magnetic ferrite nanoparticles are reviewed and discussed in this review. This review goes over the synthesis, doping and applications of different types of metal ferrite nanoparticles, as well as views on how to choose the appropriate magnetic ferrites based on the intended application.
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Affiliation(s)
- Shameran Jamal Salih
- Department of Chemistry, Koya University Koya KOY45, Kurdistan Region – F.R, Iraq
- Department of Pharmaceutical Basic Sciences, Faculty of Pharmacy, Tishk International University, KRG, Erbil, Iraq
| | - Wali M. Mahmood
- Department of Chemistry, Koya University Koya KOY45, Kurdistan Region – F.R, Iraq
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Santos SBF, Hollanda LR, Vieira Y, Dotto GL, Foletto EL, Chiavone-Filho O. Enhanced UV-light driven photocatalytic performance of magnetic CoFe 2O 4/TiO 2 nanohybrid for environmental applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27762-z. [PMID: 37213008 DOI: 10.1007/s11356-023-27762-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 05/15/2023] [Indexed: 05/23/2023]
Abstract
In this work, CoFe2O4/TiO2 nanostructure was prepared through a facile and effective solvothermal route for efficient use in the degradation of the Erionyl Red A-3G model pollutant under ultraviolet irradiation. Characterization analysis indicated the successful heterojunction among the precursors. The composite presented band gap value of 2.75 eV, being smaller than that of the pristine TiO2, as well as mesoporous structure. The catalytic activity of nanostructure was investigated by employing a 22 factorial experimental design with 3 central points. The optimized reaction conditions were set as pH = 2 and catalyst dosage = 1.0 g L-1 for an initial pollutant concentration of 20 mg L-1. The prepared nanohybrid presented remarkable catalytic activity, reaching color removal efficiency of 95.39% after 15 min, as well as total organic carbon (TOC) removal of 69.4% after 120 min. The kinetic studies of TOC removal followed the pseudo-first order model, with a rate constant of 0.10 min-1. Moreover, the nanostructure presented magnetic behavior, being easily separated from the aqueous medium through the use of a simple external magnetic field.
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Affiliation(s)
| | - Luana Rabelo Hollanda
- Department of Chemical Engineering, Federal University of Rio Grande do Norte, Natal, 59078-970, Brazil
| | - Yasmin Vieira
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Guilherme Luiz Dotto
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil.
- Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil.
| | - Edson Luiz Foletto
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Osvaldo Chiavone-Filho
- Department of Chemical Engineering, Federal University of Rio Grande do Norte, Natal, 59078-970, Brazil
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Varpe AS, Deshpande MD, Tope DR, Borhade AV. Enhanced photocatalytic performance of CdFe 2O 4/Al 2O 3 nanocomposite for dye degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:52549-52560. [PMID: 36841911 DOI: 10.1007/s11356-022-24834-4] [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: 07/08/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
In the present work, CdFe2O4/Al2O3 magnetic nanocomposite photocatalyst is successfully synthesized by simple sol-gel auto-combustion method. The role of this sample is studied as a photocatalyst. The influence of Al2O3 concentration with CdFe2O4 on the photocatalytic property is also studied. We have considered three weight percentage of Al2O3, 5%, 10%, and 20% with CdFe2O4. All the samples are characterized with X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) with selected area electron diffraction (SAED), vibrating sample magnetometer (VSM), UV-Visible, and photoluminescence (PL) spectroscopy techniques. The 10% composite sample showed the lower particle size, higher surface area, enhanced porosity, higher saturation magnetization, and considerable band gap as compared to that of 5% and 20% CdFe2O4/Al2O3 as well as bare CdFe2O4 nanoparticles. The photocatalytic activity of the sample is evaluated towards the degradation of the xylenol orange (XO) dye under UV light. The degradation process of the dye is monitored spectrophotometrically. The performance in terms of removal efficiency is studied by varying the contact time, dye concentration and amount of catalyst. Among the three concentrations of Al2O3, the 10% weight concentration of Al2O3 with CdFe2O4 is found to be the optimal concentration and showed the higher degradation rate. After 30 min photocatalytic reaction, the degradation rate is 92.29% for 10% CdFe2O4/Al2O3 and for bare CdFe2O4, it is 85.79%. This work provides a new reference for designing Al2O3-based spinel ferrite nanocomposites and their role in wastewater management.
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Affiliation(s)
- Ashwini S Varpe
- Department of Physics, H.P.T. Arts and R.Y.K. Science College, Nashik, 422005, Maharashtra, India
| | - Mrinalini D Deshpande
- Department of Physics, H.P.T. Arts and R.Y.K. Science College, Nashik, 422005, Maharashtra, India.
| | - Dipak R Tope
- Department of Chemistry, H.P.T. Arts and R.Y.K. Science College, Nashik, 422005, Maharashtra, India
| | - Ashok V Borhade
- Department of Chemistry, H.P.T. Arts and R.Y.K. Science College, Nashik, 422005, Maharashtra, India
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Photocatalysis and Antibacterial Activity Studies of Biopolymer Incorporated Green Synthesized Nano TiO2 Without UV Rays Irradiation. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02531-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kumar A, Gora MK, Lal G, Choudhary BL, Meena PL, Dhaka RS, Singhal RK, Kumar S, Dolia SN. Impact of Gd 3+ doping on structural, electronic, magnetic, and photocatalytic properties of MnFe 2O 4 nanoferrites and application in dye-polluted wastewater remediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:18820-18842. [PMID: 36219287 DOI: 10.1007/s11356-022-23420-y] [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: 07/27/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
The present work focuses on developing Gd-doped Mn spinel nanoferrites and their potential application in the photodegradation of water pollutants. The impact of Gd3+ ion substitution on structural, electronic, and magnetic characteristics of manganese ferrites has been studied. Nanocrystalline samples of MnGdxFe2-xO4 (x = 0.0 to 0.10, in step size of 0.02) ferrites were prepared via sol-gel self-ignition route. The Rietveld, XPS, HRTEM, and SAED characterization methods confirmed the formation of phase pure ferrite nanoparticles (~ 8-22 nm) in the cubic spinel structure. The Gd3+ content in these nanoferrites responded to a systematic reduction in the size of nanocrystallites and an upsurge in the density of nanoferrites. The XPS study revealed fine assimilation of constituent elements in the fcc lattice and ruled out impurities in the nanoferrites. The Fe and the Gd ions were found to be in Fe3+ and Gd3+ states, respectively. While a major fraction of the Mn ions were found to be in the Mn2+ state, a small fraction of Mn4+ ions was observed on the surface of nanoparticles. The nanoferrites were found to exhibit a soft ferromagnetic state from 300 to 20 K limits. The highest saturation magnetization was observed for x = 0.02 (MS = 66.6 emu/g at 20 K). The observed magnetic properties can be understood with the competing (Fe3+ and Mn2+)A-O2--[Fe3+, Mn2+, and Gd3+]B superexchange interactions and magnetocrystalline anisotropy. Due to the small band gap energy of Gd-doped Mn ferrites than that of the pure Mn ferrite, they have demonstrated excellent photocatalytic activity for the degradation of methylene blue (MB) dye under visible light illumination. As much as 96.35% of the MB dye was found to get degraded in 70 min of light illumination over synthesized nanoparticles and the photodegradation reaction followed pseudo-first-order kinetics. The increased optical absorbance due to lower band gap, suppressed recombination rate of charge carriers, and enhanced charge mobility make them effective visible light active photocatalysts. This study revealed that the electronic, optical, and magnetic properties of MnFe2O4 nanoferrites could be easily tuned by varying the Gd3+ content and the prepared Gd-doped MnFe2O4 nanomaterials have boundless potential to be utilized in the future making promising active photocatalysts and degradation of harmful industrial dyes for enhanced protection in the fields of environment and health care.
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Affiliation(s)
- Arvind Kumar
- Department of Physics, University of Rajasthan, Jaipur, 302004, Rajasthan, India.
| | - Mahendra Kumar Gora
- Department of Physics, University of Rajasthan, Jaipur, 302004, Rajasthan, India
| | - Ganesh Lal
- Department of Physics, Mohanlal Sukhadia University, Udaipur, 313002, Rajasthan, India
| | | | - Parmeshwar Lal Meena
- Department of Chemistry, University of Rajasthan, Jaipur, 302004, Rajasthan, India
| | - Rajendra Singh Dhaka
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Rishi Kumar Singhal
- Department of Physics, University of Rajasthan, Jaipur, 302004, Rajasthan, India
| | - Sudhish Kumar
- Department of Physics, Mohanlal Sukhadia University, Udaipur, 313002, Rajasthan, India
| | - Satya Narain Dolia
- Department of Physics, University of Rajasthan, Jaipur, 302004, Rajasthan, India
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