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Janani BJ, Syed A, Majeed NA, Shleghm MR, Abdulkhudur Ali Azlze Alkhafaij M, Bahair H, Abdulwahab HMH, Elgorban AM, Al-Shwaiman HA, Wong LS. Synergistic effect of SrTiO 3/CuFe 2O 4/MIL-101(Co) as a MOF composite under Gamma-rays for antimicrobial potential versus bacteria and pathogenic fungi. Colloids Surf B Biointerfaces 2024; 241:114015. [PMID: 38878658 DOI: 10.1016/j.colsurfb.2024.114015] [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: 03/21/2024] [Revised: 05/13/2024] [Accepted: 06/04/2024] [Indexed: 07/29/2024]
Abstract
The primary emphasis of this study was on the innovative and scientifically valuable hydrothermal synthesis of MIL-101(Co) as a metal-organic framework (MOF) material. Subsequently, the CuFe2O4 was incorporated into the MOF by a reduction-precipitation technique. The SrTiO3/CuFe2O4/MIL-101(Co) composite was synthesized by using hydrothermal in situ growth process. The XRD and FESEM investigations of the SrTiO3/CuFe2O4/MIL-101(Co) composite definitively verified its crystalline structure and proved its production with exact shape and dimensions. The data indicated that Candida albicans displayed the greatest vulnerability to all three produced materials, with reported Minimum Inhibitory Concentration (MIC) values of 500 µg mL-1 for MIL-101(Co). The CuFe2O4/MIL-101(Co) compound, when produced, exhibits MIC values of 200 µg mL-1. Additionally, the combination of CuFe2O4/MIL-101(Co) with SrTiO3, shows MIC values of 50 µg mL-1. The results also indicated that the MIC values for MIL-101(Co), and CuFe2O4/MIL-101(Co) against S. aureus were 100 µg mL-1. Ultimately, SrTiO3/CuFe2O4/MIL-101(Co) exhibited identical MIC values of 50 µg mL-1 against S. aureus. The concentration of the bacterial protein was increased by adding MIL-101(Co), CuFe2O4/MIL-101(Co), and SrTiO3/CuFe2O4/MIL-101(Co). The antibacterial capabilities of the SrTiO3/CuFe2O4/MIL-101(Co) were increased after being subjected to gamma doses of 100.0 kGy. This process paves a ways for manufacturing innovation in near future.
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Affiliation(s)
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia.
| | | | - Maytham Razaq Shleghm
- Collage of Pharmacy, National University of Science and Technology, Dhi Qar 64001, Iraq
| | | | - Hala Bahair
- Medical technical college, Al-Farahidi University, Iraq
| | | | - Abdallah M Elgorban
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia
| | - Hind A Al-Shwaiman
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia
| | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Putra Nilai, Nilai, Negeri Sembilan 71800, Malaysia
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Joshi P, Patel R, Singh A, Nenavathu BPN, Sharma M, Verma S, Sillanpää M. Sunlight-mediated removal of endocrine disruptors from wastewater using trimetallic core-shell Ag-TeO 2@ZnO nanocomposites. NANOTECHNOLOGY 2024; 35:395601. [PMID: 38955171 DOI: 10.1088/1361-6528/ad5dc4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 07/02/2024] [Indexed: 07/04/2024]
Abstract
The current work emphasizes the preparation of trimetallic core-shell Ag-TeO2@ZnO nanocomposites (NCs) by thermo-mechanical method for the efficient photocatalytic degradation of 2,4-Dichlorophenol and β-naphthol pollutants. FE-SEM shows that Ag and TeO2nanoparticles are deposited on the surface of ZnO nanotubes. The band gap of pristine ZnO NPs and 5 wt% Ag-TeO2@ZnO nanocomposites are found to be 3.16 and 2.96 eV, respectively. The calculated specific surface area (SBET) of pristine ZnO NPs and 5 wt% Ag-TeO2@ZnO nanocomposites are 40.47 and 45.66 m2g-1respectively, confirming that Ag and TeO2nanoparticles contribute to increasing in surface area of pure ZnO. The synthesised nanocomposite showed excellent photocatalytic performance for the degradation of β -naphthol (95.6%) in 40 min at the concentration of (0.6 mg ml-1) and 2,4-DCP (99.6%) in 180 min (0.4 mg ml-1) under natural sunlight. Cyclic Voltammetry and Electrochemical Impedance Spectroscopy were carried out to study the electrochemical properties. The determination of reactive oxygen species (ROS) confirmed that the degradation of the pollutants by 5 wt% Ag-TeO2@ZnO NCs was due to the formation of superoxide radicals. Electron paramagnetic resonance revealed the presence of sharp signals in pure ZnO nanoparticles at g ∼1.95 and oxygen vacancy peak at g ∼2.01 in 5 wt% Ag-TeO2@ZnO NCs. To study the mechanism behind the degradation of pollutants, Scavenger test using histidine and ascorbic acid (ROS scavengers) was performed. The synthesised nanocomposites are highly stable and showed enhanced efficiency up to three cycles, confirming their reusability as a photocatalyst.
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Affiliation(s)
- Preeti Joshi
- Department of Applied Sciences and Humanities, Indira Gandhi Delhi Technical University for Women, Delhi 110006, India
| | - Rajendra Patel
- School of Nano Sciences, Central University of Gujarat, Gandhinagar, Gujarat 382030, India
| | - Aishwarya Singh
- Department of Applied Sciences and Humanities, Indira Gandhi Delhi Technical University for Women, Delhi 110006, India
| | - Bhavani Prasad Naik Nenavathu
- Department of Applied Sciences and Humanities, Indira Gandhi Delhi Technical University for Women, Delhi 110006, India
| | - Manu Sharma
- School of Nano Sciences, Central University of Gujarat, Gandhinagar, Gujarat 382030, India
| | - Swati Verma
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, PO Box 17011, Doornfontein 2028, South Africa
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Elhmali HT, Stajcic I, Stajcic A, Pesic I, Jovanovic M, Petrovic M, Radojevic V. Influence of Novel SrTiO 3/MnO 2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. Polymers (Basel) 2024; 16:278. [PMID: 38276687 PMCID: PMC10820619 DOI: 10.3390/polym16020278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/30/2023] [Accepted: 12/30/2023] [Indexed: 01/27/2024] Open
Abstract
While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.
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Affiliation(s)
- Houda Taher Elhmali
- Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia; (H.T.E.); (M.J.); (M.P.); (V.R.)
| | - Ivana Stajcic
- Department of Physical Chemistry, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, P.O. Box 522, 11001 Belgrade, Serbia
| | - Aleksandar Stajcic
- Center for Microelectronic Technologies, Institute of Chemistry, Technology and Metallurgy—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.S.); (I.P.)
| | - Ivan Pesic
- Center for Microelectronic Technologies, Institute of Chemistry, Technology and Metallurgy—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.S.); (I.P.)
| | - Marija Jovanovic
- Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia; (H.T.E.); (M.J.); (M.P.); (V.R.)
| | - Milos Petrovic
- Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia; (H.T.E.); (M.J.); (M.P.); (V.R.)
| | - Vesna Radojevic
- Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia; (H.T.E.); (M.J.); (M.P.); (V.R.)
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Neti S, Rani Nanmangalam A, Narasimhulu Chintakuntla C, Ramasamy T, Sankaranarayanan S. Structural influence of strontium titanate nanocubes for photocatalytic dye degradation and electrochemical applications. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2022.110299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Jovanoski Kostić A, Kanas N, Rajić V, Sharma A, Bhattacharya SS, Armaković S, Savanović MM, Armaković SJ. Evaluation of Photocatalytic Performance of Nano-Sized Sr 0.9La 0.1TiO 3 and Sr 0.25Ca 0.25Na 0.25Pr 0.25TiO 3 Ceramic Powders for Water Purification. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4193. [PMID: 36500815 PMCID: PMC9736647 DOI: 10.3390/nano12234193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 06/17/2023]
Abstract
Water pollution is a significant issue nowadays. Among the many different technologies for water purification, photocatalysis is a very promising and environment-friendly approach. In this study, the photocatalytic activity of Sr0.9La0.1TiO3 (SLTO) and Sr0.25Ca0.25Na0.25Pr0.25TiO3 (SCNPTO) nano-sized powders were evaluated by degradation of pindolol in water. Pindolol is almost entirely insoluble in water due to its lipophilic properties. The synthesis of the SCNPTO was performed using the reverse co-precipitation method using nitrate precursors, whereas the SLTO was produced by spray pyrolysis (CerPoTech, Trondheim Norway). The phase purity of the synthesized powders was validated by XRD, while HR-SEM revealed particle sizes between 50 and 70 nm. The obtained SLTO and SCNPTO powders were agglomerated but had relatively similar specific surface areas of about 27.6 m2 g-1 and 34.0 m2 g-1, respectively. The energy band gaps of the SCNPTO and SLTO were calculated (DFT) to be about 2.69 eV and 3.05 eV, respectively. The photocatalytic performances of the materials were examined by removing the pindolol from the polluted water under simulated solar irradiation (SSI), UV-LED irradiation, and UV irradiation. Ultra-fast liquid chromatography was used to monitor the kinetics of the pindolol degradation with diode array detection (UFLC-DAD). The SLTO removed 68%, 94%, and 100% of the pindolol after 240 min under SSI, UV-LED, and UV irradiation, respectively. A similar but slightly lower photocatalytic activity was obtained with the SCNPTO under identical conditions, resulting in 65%, 84%, and 93% degradation of the pindolol, respectively. Chemical oxygen demand measurements showed high mineralization of the investigated mixtures under UV-LED and UV irradiation.
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Affiliation(s)
- Aleksandra Jovanoski Kostić
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, Serbia
| | - Nikola Kanas
- University of Novi Sad, Institute BioSense, 21000 Novi Sad, Serbia
| | - Vladimir Rajić
- University of Belgrade, INS Vinča, Department of Atomic Physics, 11000 Belgrade, Serbia
| | - Annu Sharma
- Nanofunctional Materials Technology Centre, Department of MME, IIT Madras, Chennai 600001, India
| | | | - Stevan Armaković
- University of Novi Sad, Faculty of Sciences, Department of Physics, 21000 Novi Sad, Serbia
- Association for the International Development of Academic and Scientific Collaboration (AIDASCO), 21000 Novi Sad, Serbia
| | - Maria M. Savanović
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, Serbia
- Association for the International Development of Academic and Scientific Collaboration (AIDASCO), 21000 Novi Sad, Serbia
| | - Sanja J. Armaković
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, Serbia
- Association for the International Development of Academic and Scientific Collaboration (AIDASCO), 21000 Novi Sad, Serbia
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Le VT, Le HS, Tran VA, Sang-Wha L, Doan VD, Joo SW, Vasseghian Y. Enhanced photocatalytic degradation of reactive blue 19 using zeolitic imidazolate framework-8 composited with Fe3O4/MnO2 heterojunction. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Abstract
Strontium titanates were prepared with different morphologies by varying the ratio of solvents used during the synthesis. The effects of morphology and solvent (ethylene glycol to water) ratio were investigated both on the structure and photocatalytic activity of the samples. Structural properties were determined by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and nitrogen adsorption measurements. The photocatalytic activity of the samples was evaluated by the photocatalytic oxidation of phenol and by the photocatalytic reduction of carbon dioxide. The ratio of solvents notably influenced the morphology, strontium carbonate content, primary crystallite size, and specific surface area of the samples. Samples prepared at low ethylene glycol to water ratios were spherical, while the ones prepared at high ethylene glycol to water ratios could be characterized predominantly by lamellar morphology. The former samples were found to have the highest efficiency for phenol degradation, while the sample with the most well-defined lamellar morphology proved to be the best for CO2 reduction.
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Perovskite Zinc Titanate Photocatalysts Synthesized by the Sol–Gel Method and Their Application in the Photocatalytic Degradation of Emerging Contaminants. Catalysts 2021. [DOI: 10.3390/catal11070854] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
In this study, perovskite ZnTiO3 photocatalysts were fabricated by the sol–gel method. The photocatalytic capability was verified by the degradation of the emerging contaminant, the antibiotic amoxicillin (AMX). For the preparation, the parameters of the calcination temperature and the additional amount of polyvinylpyrrolidone (PVP) and ammonia are discussed, including the calcining temperature (500, 600, 700, 800 °C), the volume of ammonia (750, 1500, 3000 μL), and the weight of PVP (3 g and 5 g). The prepared perovskite ZnTiO3 was characterized by XRD, FESEM, BET, and UV-Vis. It is shown that the perovskite ZnTiO3 photocatalysts are structurally rod-like and ultraviolet light-responsive. Consequently, the synthesis conditions for fabricating the perovskite ZnTiO3 photocatalysts with the highest photocatalytic performance were a calcining temperature of 700 °C, an additional ammonia amount of 1500 μL, and added PVP of 5 g. Moreover, the photocatalytic degradation of perovskite ZnTiO3 photocatalysts on other pollutants, including the antibiotic tetracycline (TC), methyl orange (MO), and methylene blue (MB) dyes, was also examined. This provides the basis for the application of perovskite ZnTiO3 as a photocatalyst to decompose emerging contaminants and organic pollutants in wastewater treatment.
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