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Taghavi Fardood S, Ganjkhanlu S, Moradnia F, Ramazani A. Green synthesis, characterization, and photocatalytic activity of superparamagnetic MgFe 2O 4@ZnAl 2O 4 nanocomposites. Sci Rep 2024; 14:16670. [PMID: 39030331 PMCID: PMC11271622 DOI: 10.1038/s41598-024-67655-w] [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: 03/14/2024] [Accepted: 07/15/2024] [Indexed: 07/21/2024] Open
Abstract
MgFe2O4@ZnAl2O4 magnetic nanocomposites were synthesized with the easy and green sol-gel method, and their photocatalytic efficiency was followed toward degradation of reactive blue 222 (RB222) dye under visible light irradiation. Prepared nanocomposites were fully characterized. The SEM and TEM images revealed the spherical morphology of the produced nanocomposites, with average size of 20-25 nm. The XRD pattern of sample exhibited the successful synthesis of the MgFe2O4@ZnAl2O4 MNCs with crystallite size 13 nm. The saturation magnetization (Ms) of the nanocomposites was examined using VSM, indicating a value of 6.59 emu/g. The absence of Hc and Mr values confirms the superparamagnetic nature of the nanoparticles. In addition, the surface area was calculated to be 78.109 m2/g utilizing BET analysis, and the band gap was determined to be 1.88 eV by DRS analysis. The photocatalytic, photolysis, and adsorption performance were investigated and result shown photodegradation activity was higher than others. These results confirm the synergetic effect between the MgFe2O4@ZnAl2O4 MNCs and visible light irradiation to degradation of organic dye. The results indicate that rapid degradation of 96% of RB222 dye occurred in just 10 min, with a TOC removal rate of approximately 59%. Furthermore, radical scavenger agents also clarified photodegradation of RB222 dye.
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Affiliation(s)
- Saeid Taghavi Fardood
- Department of Chemistry, Faculty of Science, Ilam University, Ilam, 69315-516, Iran.
| | - Sara Ganjkhanlu
- Department of Chemistry, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Farzaneh Moradnia
- Department of Chemistry, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Ali Ramazani
- Department of Chemistry, University of Zanjan, Zanjan, 45371-38791, Iran
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Gomathi A, Ramesh Kumar KA, Maadeswaran P. CeO 2 nanospheres incorporated with Bi 2MoO 6/g-C 3N 4 enhanced photocatalysis towards environmental pollutant Rhodamine B removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34073-4. [PMID: 39017869 DOI: 10.1007/s11356-024-34073-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 06/18/2024] [Indexed: 07/18/2024]
Abstract
We have adopted a novel CeO2/Bi2MoO6/g-C3N4-based ternary nanocomposite that was synthesized via hydrothermal technique. The physiochemical characterization of as-prepared samples was examined through various analytical techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy TEM, photoluminescent spectra (PL), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), and ultraviolet diffuse reflectance spectroscopy (UV-DRS) technique. In addition, the photocatalytic performance was carried out by degradation of Rhodamine B dye under visible light irradiation using this nanocatalyst. The ternary nanocomposite achieved 94% of the degradation efficiency within 100 min which is higher than the pristine and binary composites under the predetermined condition pH = 7, Rhodamine B dye = 5 mg/L, and catalyst concentration = 150 mg/L. The experimental synergetic effect of CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite has been ascribed to the interfacial charge carrier migration between CeO2, Bi2MoO6, and g-C3N4. The optical absorption range of CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite was enhanced, and the band gap was reduced up to 2.2 eV. In addition, scavenger trapping experiment proves that the super oxide anions (O2-.) and photogenerated holes are the major active species. The reusability and stability experiment proved the CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite keeps good durability during the photocatalytic degradation process after the five successive cycles. Furthermore, based on the results, the charge carrier transfer photocatalytic mechanism was also discussed. This CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite may offer the cheapest material and extend the great opportunity for clean and environmental remediation approach under the visible light irradiation.
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Affiliation(s)
- Abimannan Gomathi
- Advanced Nanomaterials and Energy Research Laboratory, Department of Energy Science and Technology, Periyar University, Salem, 636011, India
| | - Kandasamy Athiyanan Ramesh Kumar
- Advanced Bioenergy and Biofuels Research Laboratory, Department of Energy Science and Technology, Periyar University, Salem, 636011, India
| | - Palanisamy Maadeswaran
- Advanced Nanomaterials and Energy Research Laboratory, Department of Energy Science and Technology, Periyar University, Salem, 636011, India.
- Center for Instrumentation and Maintenance Facility, Periyar University, 636011, Salem, Tamil Nadu, India.
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3
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Manzoor S, Aziz K, Raza H, Manzoor S, Khan MI, Naz A, Shanableh A, A M Salih A, Elboughdiri N. Tailoring Vanadium-Based Magnetic Catalyst by In Situ Encapsulation of Tungsten Disulfide and Applications in Abatement of Multiple Pollutants. ACS OMEGA 2023; 8:48966-48974. [PMID: 38162758 PMCID: PMC10753748 DOI: 10.1021/acsomega.3c06580] [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: 09/01/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024]
Abstract
A magnetic nanocomposite of tungsten and vanadium was employed as a catalyst for the mitigation of water contaminants, including a carcinogenic dye (Congo red, CR), a widely used pesticide (glyphosate), and the bacterial strain Escherichia coli. Additionally, it was subjected to several characterization techniques. X-ray diffraction spectroscopy examination validated the synthesized nanoparticles' crystalline nature, and scanning electron microscopy and energy-dispersive X-ray analysis were employed to examine the morphology and elemental composition of the catalyst. The use of thermogravimetric analysis enabled the elaboration of the thermal behavior of tungsten sulfide-vanadium decorated with Fe2O3 nanoparticles. The experiments were conducted under visible light conditions. The highest levels of photodegradation of 96.24 ± 2.5% for CR and 98 ± 1.8% for glyphosate were observed following a 180 min exposure to visible light at pH values of 6 and 8, respectively. The quantum yields for CR and Gly were calculated to be 9.2 × 10-3 and 4.9 × 10-4 molecules photon-1, respectively. The findings from the scavenger analysis suggest the involvement of hydroxyl radicals in the degradation mechanism. The study evaluated the inhibition of E. coli growth when exposed to a concentration of 0.1 g/10 mL of the photocatalyst, utilizing a 1 mL sample of the bacterial strain. The successful elimination of CR and glyphosate from water-based solutions, along with the subsequent antibacterial experiments, has substantiated the efficacy of the photocatalyst in the field of environmental remediation.
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Affiliation(s)
- Suryyia Manzoor
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60000, Pakistan
| | - Khalid Aziz
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60000, Pakistan
| | - Hina Raza
- Faculty
of Pharmacy, Bahauddin Zakariya Unviersity, Multan 60000, Pakistan
| | - Shamaila Manzoor
- Department
of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina, Bratislava 842 48, Slovakia
| | - Muhammad Imran Khan
- Research
Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah 27272, United Arab
Emirates
| | - Asma Naz
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60000, Pakistan
| | - Abdallah Shanableh
- Research
Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah 27272, United Arab
Emirates
| | - Alsamani A M Salih
- Chemical
Engineering Department, College of Engineering, University of Ha’il, P.O. Box
2440, Ha’il 81441, Saudi Arabia
- Department
of Chemical Engineering, Faculty of Engineering, Al Neelain University, Khartoum 12702, Sudan
| | - Noureddine Elboughdiri
- Chemical
Engineering Department, College of Engineering, University of Ha’il, P.O. Box
2440, Ha’il 81441, Saudi Arabia
- Chemical
Engineering Process Department, National School of Engineers Gabes, University of Gabes, Gabes 6029, Tunisia
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Sharma R, Garg R, Bali M, Eddy NO. Potential applications of green-synthesized iron oxide NPs for environmental remediation. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1397. [PMID: 37910248 DOI: 10.1007/s10661-023-12035-6] [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: 04/13/2023] [Accepted: 10/23/2023] [Indexed: 11/03/2023]
Abstract
Water pollution is a significant issue worldwide due to an increase in anthropogenic activities. Heavy metals and dyes are among the most problematic contaminants that threaten the environment and negatively impact human health. Iron oxide nanoparticles (IONPs) synthesized using green methods have shown potential in these areas due to their significant adsorption capacity and photocatalytic potential. The size and morphology of biogenic IONPs can be tailored depending upon the concentration of the reducing medium and metal salt precursor. Green-synthesized IONPs have been found to be effective, economical, and environmentally friendly with their large surface area, making them suitable for removing toxic matter from contaminated water. Furthermore, they exhibit antibacterial potential against harmful microorganisms. The study emphasizes the importance of using such environmentally friendly tools to remove heavy metal ions and organic compounds from contaminated water. The underlying mechanism for the adsorption of heavy metal ions, photocatalytic degradation of organic compounds, and antimicrobial action has been explored in detail. The future prospective for the beneficial utilization of biogenic IONPs has also been signified to provide a detailed overview.
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Affiliation(s)
- Rajat Sharma
- Department of Chemistry, USS, Rayat-Bahra University, Mohali, Punjab, 140104, India
| | - Rajni Garg
- Department of Applied Sciences, Galgotias College of Engineering & Technology, Greater Noida, Uttar Pradesh, 201310, India.
| | - Manoj Bali
- Department of Chemistry, USS, Rayat-Bahra University, Mohali, Punjab, 140104, India
| | - Nnabuk O Eddy
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
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Zaman Y, Ishaque MZ, Yousaf Y, Shahzad M, Siddique AB, Arshad MI, Sajid M, Ali N, Nabi G. Physical properties of multifunctional TM-doped ZnO nanorods and their photocatalytic and anti-bacterial activities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:95860-95874. [PMID: 37561304 DOI: 10.1007/s11356-023-29163-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 07/31/2023] [Indexed: 08/11/2023]
Abstract
Dilute magnetic semiconductor Zn1-xCuxO (x = 0, 1.5, 3.0, and 4.5%) nanorods were prepared by hydrothermal method. The impact of dopant concentration on the physical properties was investigated along with the anti-bacterial and photocatalytic activities. Synthesis of ZnO nanorods was confirmed by the characteristic band at 380 nm in UV-Visible spectra of the synthesized samples. A red shift in absorbance spectra was observed from 380 to 465 nm with an increase in dopant concentration. The hexagonal wurtzite geometry and rod-like morphology of Cu-doped ZnO nanorods having an average size of 29 nm were confirmed by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM), respectively. An increase in the crystallinity of the material was observed with an increase in the dopant (Cu) ratio without any alteration in geometry. EDX analysis was used to confirm the purity of samples. FTIR spectra were recorded to explore the functional group present in samples. The hysteresis loop drawn by a vibrating-sample magnetometer (VSM) was utilized to analyze the ferromagnetic behavior. As-synthesized pure and Cu-ZnO nanorods were evaluated for their photocatalytic behavior for the photodegradation of methyl orange (MO) dye. Zn1 - xCuxO with x = 4.5%, pH 3, and catalyst dosage of 0.5 g has shown the maximum efficiency. Results elucidated > 81% degradation of MO dye with a rate constant (k) value of - 1.930 × 10-2 min-1 in just 90 min of exposure to a visible light source. ZnO nanorods have also exhibited anti-bacterial potential against gram-positive and gram-negative strains of bacteria. However, smaller size nanorods were found more effective to suppress the growth of gram-negative bacteria. A slight decrease (11%) in catalytic potential was observed in the 5th cycle during recycling and reuse experiments.
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Affiliation(s)
- Yasir Zaman
- Department of Physics, University of Sargodha, Sargodha, 40100, Pakistan
| | | | - Yasir Yousaf
- Department of Physics, University of Sargodha, Sargodha, 40100, Pakistan
| | - Muhammad Shahzad
- Department of Physics, University of Sargodha, Sargodha, 40100, Pakistan
| | - Abu Bakar Siddique
- Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan
| | - Muhammad Imran Arshad
- Department of Physics, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Sajid
- National & Local United Engineering Laboratory for Power Batteries, College of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, China.
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Deep Utilization Technology of Rock-Salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Ghulam Nabi
- Institute of Nature Conservation, Polish Academy of Sciences, Krakow, Poland
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Ajibade PA, Mbuyazi TB, Paca AM. Synthesis and Crystal Structures of Bis(diallydithiocarbamato)zinc(II) and Silver(I) Complexes: Precursors for Zinc Sulfide and Silver Sulfide Nanophotocatalysts. ACS OMEGA 2023; 8:24750-24760. [PMID: 37483185 PMCID: PMC10357456 DOI: 10.1021/acsomega.2c07490] [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: 11/22/2022] [Accepted: 03/27/2023] [Indexed: 07/25/2023]
Abstract
We report the preparation and crystal structures of bis(diallydithiocarbamato)zinc(II) and silver(I) complexes. The compounds were used as single-source precursors to prepare zinc sulfide and silver sulfide nanophotocatalysts. The molecular structure of bis(diallydithiocarbamato)zinc(II) consists of a dimeric complex in which each zinc(II) ion asymmetrically coordinates with two diallydithiocarbamato anions in a bidentate chelating mode, and the centrosymmetrically related molecule is bridged through the S-atom that is chelated to the adjacent zinc(II) ion to form a distorted trigonal bipyramidal geometry around the zinc(II) ions. The molecular structure of bis(diallydithiocarbamato)silver(I) formed a cluster complex consisting of a trimetric Ag3S3 molecule in which the diallydithiocarbamato ligand is coordinated to all the Ag(I) ions. The complexes were thermolyzed in dodecylamine, hexadecylamine, and octadecylamine (ODA) to prepare zinc sulfide and silver sulfide nanoparticles. The powder X-ray diffraction patterns of the zinc sulfide nanoparticles correspond to the hexagonal wurtzite while silver sulfide is in the acanthite crystalline phase. The high-resolution transmission electron microscopy images show that quantum dot zinc sulfide nanoparticles are obtained with particle sizes ranging between 1.98 and 5.49 nm, whereas slightly bigger silver sulfide nanoparticles are obtained with particle sizes of 2.70-13.69 nm. The surface morphologies of the ZnS and AgS nanoparticles capped with the same capping agent are very similar. Optical studies revealed that the absorption band edges of the as-prepared zinc sulfide and silver sulfide nanoparticles were blue-shifted with respect to their bulk materials with some surface defects. The zinc sulfide and silver sulfide nanoparticles were used as nanophotocatalysts for the degradation of bromothymol blue (BTB) and bromophenol blue (BPB). ODA-capped zinc sulfide is the most efficient photocatalyst and degraded 87% of BTB and 91% of BPB.
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Ahmed D, Ahmed A, Usman M, Rafiq M, Tufail MK, Ahmed T, Memon AM, Khokhar WA. Efficient degradation of atrazine from synthetic water through photocatalytic activity supported by titanium dioxide nanoparticles. Z PHYS CHEM 2023. [DOI: 10.1515/zpch-2022-0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Abstract
The oxidation of atrazine herbicide from water was performed by using titanium dioxide (TiO2) nanoparticles synthesized via the sol-gel method. A batch-scale photocatalytic reactor was designed for experimental work. The process was monitored using a UV–visible spectrophotometer. Operational parameters such as catalyst loading and pollutant concentration were investigated. The X-ray diffraction confirmed the anatase phase and high purity of the synthesized particles. Fourier transform infrared showed the functional group of titanium (Ti–O–Ti). The morphology of synthesized nanoparticles was characterized by scanning electron microscopy and transmission electron microscopy, which exhibited the irregular shape of nanoparticles along with aggregations. The average size of TiO2 was found to be 56.92 nm as measured from dynamic light scattering analysis. UV–visible spectrometry showed an absorbance of 0.13 (<1). The nanoparticles displayed UV light-responsive catalytic ability with a bandgap energy of 3.14 eV. Furthermore, atrazine was discovered using mass spectrometry, which revealed a clear and sharp peak at 173, 95, and 76 m/z, respectively, at collision energies of 16 and 24 eV. The photocatalytic activity of the TiO2 nanoparticles was examined for the degradation of atrazine. Overall, the obtained results displayed the great efficiency of TiO2 nanoparticles towards ultra-violet light, which was 92.56% at 100 mg of dosages, highlighting the great potential of the photocatalysis process for atrazine degradation. Furthermore, the process followed pseudo-first-order kinetics and the rate was seen to depend on catalyst loading.
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Yang R, Peng Q, Ahmed A, Gao F, Yu B, Shen Y, Cong H. Yolk-shell Co 3 O 4 @Fe 3 O 4 /C Nanocomposites as a Heterogeneous Fenton-like Catalyst for Organic Dye Removal. Chemistry 2023; 29:e202203097. [PMID: 36453090 DOI: 10.1002/chem.202203097] [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: 10/04/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/03/2022]
Abstract
The yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites with Co3 O4 as the core, Fe3 O4 /C as the shell, and a cavity structure were synthesized by the hard template method. The physical and chemical properties of the composites were characterized by SEM, TEM, XRD, TGA, XPS, BET, and VSM. The specific surface area of yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites is 175.9 m2 g-1 , showing superparamagnetic properties. The yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites were used as heterogeneous Fenton catalysts to activate peroxymonosulfate (PMS) to degrade MB, which showed high catalytic degradation performance. The degradation rate of MB reached 100 % within 30 min under the circumstances of the yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites dosage of 0.1 g L-1 , the PMS dosage of 1.0 g L-1 , the initial MB concentration of 100 mg L-1 , an initial pH of 5.5, and a temperature of 30±2 °C. The enhanced catalytic performance of the yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites can be attributed to the synergistic effect of the two catalytically active materials and the middle cavity. The effects of different operating parameters and co-existing anion species on MB degradation were also investigated. Electron paramagnetic resonance (EPR) analysis and quenching experiments confirmed that the formation of SO4 ⋅- in the yolk-shell Co3 O4 @Fe3 O4 /C/PMS system contributes to MB degradation. In addition, yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites can be easily separated from the pollutant solution under the action of an external magnetic field, and the degradation rate of MB can still reach 98 % after five cycles, indicating that it has good stability and reusability and has broad application prospects in the field of water purification.
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Affiliation(s)
- Ruixia Yang
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Qiaohong Peng
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Adeel Ahmed
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Fengyuan Gao
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Bing Yu
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China.,State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071, P. R. China
| | - Youqing Shen
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China.,State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071, P. R. China.,School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
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Phyto-mediated synthesis of Ag nanoparticles/attapulgite nanocomposites using olive leaf extract: Characterization, antibacterial activities and cytotoxicity. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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10
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Maqbool S, Ahmed A, Mukhtar A, Jamshaid M, Rehman AU, Anjum S. Efficient photocatalytic degradation of Rhodamine B dye using solar light-driven La-Mn co-doped Fe 2O 3 nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:7121-7137. [PMID: 36029444 DOI: 10.1007/s11356-022-22701-w] [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: 04/04/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
This work aims to develop a highly efficient solar light-induced photocatalyst based on La-Mn co-doped Fe2O3 nanoparticles. Pure Fe2O3 and La-Mn co-doped Fe2O3 nanoparticles were fabricated by a simple co-precipitation method. The photocatalysts were analyzed for their morphological, structural, and magnetic characteristics. Scanning electron microscopy analysis demonstrated the formation of semi-spherical nanoparticles along with small aggregations. The size of nanoparticles was measured using a transmission electron microscope and found in the range of 42-49 nm. The crystalline nature and geometry of synthesized nanoparticles were investigated using X-ray diffraction analysis. Due to the incorporation of La-Mn, the saturation magnetization and remanent magnetization of the nanoparticles decreased from 6.17 to 2.89 emu/g and 1.15 to 0.52 emu/g, respectively, while the coercivity was reduced from 756.72 to 756.67 Oe. The surface area of nanoparticles was increased from 77.93 to 87.45 m2/g as a result of La-Mn co-doping. The photocatalytic performance of the Fe2O3, La0.1Mn0.3Fe1.6O3, and La0.2Mn0.2Fe1.6O3 catalysts was assessed by their capability to degrade Rhodamine B (RhB) under solar light illumination. La0.2Mn0.2Fe1.6O3 displayed exceptional degradation performance, degrading RhB to 91.78% in 240 min, in comparison to La0.1Mn0.3Fe1.6O3 (71.09%) and pristine Fe2O3 (58.21%) under specified reaction conditions ((RhB) = 50 ppm; (catalyst) = 40 mg/L; pH = 7; T = 25 °C)). RhB degradation was affected by changing pH, catalytic dosage, dye concentration, and temperature. The degradation of RhB was found to be pseudo-1st order kinetics. The exceptional photocatalytic performance of La0.2Mn0.2Fe1.6O3 catalysts showed that the synthesized nanoparticles could be effectively utilized to remove organic pollutants from industrial wastewater.
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Affiliation(s)
- Sobia Maqbool
- Department of Chemistry, The Government Sadiq College Women University Bahawalpur, Punjab, 63100, Pakistan
| | - Adeel Ahmed
- College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
| | - Arif Mukhtar
- Institute of Chemistry, The Islamia University of Bahawalpur, Punjab, 63100, Pakistan
| | - Muhammad Jamshaid
- Institute of Chemistry, The Islamia University of Bahawalpur, Punjab, 63100, Pakistan
| | - Aziz Ur Rehman
- Institute of Chemistry, The Islamia University of Bahawalpur, Punjab, 63100, Pakistan
| | - Saima Anjum
- Department of Chemistry, The Government Sadiq College Women University Bahawalpur, Punjab, 63100, Pakistan.
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Selvaraj R, Pai S, Vinayagam R, Varadavenkatesan T, Kumar PS, Duc PA, Rangasamy G. A recent update on green synthesized iron and iron oxide nanoparticles for environmental applications. CHEMOSPHERE 2022; 308:136331. [PMID: 36087731 DOI: 10.1016/j.chemosphere.2022.136331] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/18/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Nanotechnology is considered the budding discipline in various fields of science and technology. In this review, the various synthesis methods of iron and iron oxide nanoparticles were summarised with more emphasis on green synthesis - a sustainable and eco-friendly method. The mechanism of green synthesis of these nanomaterials was reviewed in recent literature. The magnetic properties of these nanomaterials were briefed which makes them unique in the family of nanomaterials. An overview of various removal methods for the pollutants such as dye, heavy metals, and emerging contaminants using green synthesized iron and iron oxide nanoparticles is discussed. The mechanism of pollutant removal methods like Fenton-like degradation, photocatalytic degradation, and adsorption techniques was also detailed. The review is concluded with the challenges and possible future aspects of these nanomaterials for various environmental applications.
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Affiliation(s)
- Raja Selvaraj
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Shraddha Pai
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Ramesh Vinayagam
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Thivaharan Varadavenkatesan
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Ponnusamy Senthil Kumar
- Green Technology and Sustainable Development in Construction Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Vietnam.
| | - Pham Anh Duc
- Faculty of Safety Engineering, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Vietnam
| | - Gayathri Rangasamy
- University Centre for Research and Development & Department of Civil Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
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Saied E, Salem SS, Al-Askar AA, Elkady FM, Arishi AA, Hashem AH. Mycosynthesis of Hematite (α-Fe2O3) Nanoparticles Using Aspergillus niger and Their Antimicrobial and Photocatalytic Activities. Bioengineering (Basel) 2022; 9:bioengineering9080397. [PMID: 36004922 PMCID: PMC9404788 DOI: 10.3390/bioengineering9080397] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/02/2022] [Accepted: 08/10/2022] [Indexed: 12/13/2022] Open
Abstract
Nanoparticles (NPs) and nanomaterials (NMs) are now widely used in a variety of applications, including medicine, solar energy, drug delivery, water treatment, and pollution detection. Hematite (α-Fe2O3) nanoparticles (Hem-NPs) were manufactured in this work by utilizing a cost-effective and ecofriendly approach that included a biomass filtrate of A. niger AH1 as a bio-reducer. The structural and optical properties of Hem-NPs were investigated using X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), and UV-visible and Fourier-transform infrared (FTIR) spectroscopies. The results revealed that all of the studied parameters, as well as their interactions, had a significant impact on the crystallite size. The average diameter size of the biosynthesized Hem-NPs ranged between 60 and 80 nm. The antimicrobial and photocatalytic activities of Hem-NPs were investigated. The antimicrobial results of Hem-NPs revealed that Hem-NPs exhibited antibacterial activity against E. coli, B. subtilis, and S. mutans with MICs of 125, 31.25, and 15.62 µg/mL, respectively. Moreover, Hem-NPs exhibited antifungal activity against C. albicans and A. fumigatus, where the MICs were 2000 and 62.5 µg/mL, respectively. The efficiency of biosynthesized Hem-NPs was determined for the rapid biodegradation of crystal violet (CV) dye, reaching up to 97 percent after 150 min. Furthermore, Hem-NPs were successfully used more than once for biodegradation and that was regarded as its efficacy. In conclusion, Hem-NPs were successfully biosynthesized using A. niger AH1 and demonstrated both antimicrobial activity and photocatalytic activity against CV dye.
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Affiliation(s)
- Ebrahim Saied
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City 11884, Egypt
- Correspondence: (E.S.); (A.A.A.-A.); (A.H.H.)
| | - Salem S. Salem
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City 11884, Egypt
| | - Abdulaziz A. Al-Askar
- Department of Botany and Microbiology, Faculty of Science, King Saud University, Riyadh 12372, Saudi Arabia
- Correspondence: (E.S.); (A.A.A.-A.); (A.H.H.)
| | - Fathy M. Elkady
- Microbiology and Immunology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11884, Egypt
| | - Amr A. Arishi
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Amr H. Hashem
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City 11884, Egypt
- Correspondence: (E.S.); (A.A.A.-A.); (A.H.H.)
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Bio-inspired Synthesis of Metal and Metal Oxide Nanoparticles: The Key Role of Phytochemicals. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02276-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Hmamouchi S, El Yacoubi A, El Idrissi BC. Using egg ovalbumin to synthesize pure α-Fe2O3 and cobalt doped α-Fe2O3: structural, morphological, optical and photocatalytic properties. Heliyon 2022; 8:e08953. [PMID: 35243074 PMCID: PMC8857434 DOI: 10.1016/j.heliyon.2022.e08953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/12/2021] [Accepted: 02/09/2022] [Indexed: 01/15/2023] Open
Abstract
Nanoparticles of undoped hematite (α-Fe2O3) and Co doped α-Fe2O3 were prepared by a simple, green, and cost-efficient process using Co and Fe chlorides and freshly isolated hen egg white. Several techniques of characterization, such as differential thermal and thermogravimetric analysis (DTA/TG), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), EDS analysis, X-ray diffraction analysis (XRD), and Ultra-violet Visible (UV–Vis) analysis were applied. The incorporation of Co particles into the hematite matrix limits the growth of the α-Fe2O3 crystalline grain and favours the apparition of γ-Fe2O3 phase. SEM analysis reveals that there are no significant morphological differences among α-Fe2O3 and Co-α-Fe2O3 particles, whereas the XPS analysis confirms the existence of Fe and Co particles in the as-prepared samples. The optical study shows a slight reduction of band gap energy for Co doped α-Fe2O3 compared to the non-doped α-Fe2O3, which has shown enhanced visible light adsorption performance. On the other hand, the α-Fe2O3 and Co-α-Fe2O3 nano-photocatalysts with an average crystallite size of 21 and 43 nm respectively, were used to remove the Methylene Blue (MB) dye from aqueous solutions after being exposed to visible light. In a mechanistic study, the radicals OH• and •O2− were shown to be important in the degradation of MB dye. To optimise the effective parameters on MB dye degradation, the experimental parameters applied in the adsorption experiments, such as pH, photocatalyst dosage, contact time, and temperature, were tested. The optimal conditions were determined as pH = 12, photocatalyst dosage = 0.2 g/L. Degradation efficiency in the optimal conditions is 91.8 % after 120 min of irradiation. The pseudo-first and second orders were used to model the kinetic data. The removal of MB using α-Fe2O3 and Co-α-Fe2O3 photocatalysts matched well with pseudo-second-order reaction kinetics. Furthermore, the thermodynamic study reveals that MB dye adsorption on the Co-Fe2O3 absorbent was an endothermic and spontaneous process.
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Petoussi MA, Kalogerakis N. Olive mill wastewater phytoremediation employing economically important woody plants. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 302:114076. [PMID: 34781052 DOI: 10.1016/j.jenvman.2021.114076] [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: 07/31/2021] [Revised: 11/06/2021] [Accepted: 11/06/2021] [Indexed: 06/13/2023]
Abstract
In this study two plant species, Punica granatum L. and Myrtus communis L., have been tested as candidates for phytoremediation of olive mill wastewater (OMW) through recirculation in soil pilot units, according to the proposed patented technology by Santori and Cicalini [EP1216963 A. 26 Jun 2002]. Wastewater was treated in batches of low to high organics strength (COD: 2 700-45 700 mg/L) during summer months of two consecutive years. Dynamics of the most important wastewater parameters were investigated, and corresponding removal rates were estimated. During treatment of low organic load OMW, average removal rate of organics, phenolics, total nitrogen and total phosphorus were 0.68 g-COD/kg-soil d, 0.073 g-TPh/kg-soil d, 0.033 g-TN/kg-soil d and 0.0074 g-TP/kg-soil d respectively and plants proved to be tolerant to the OMW. During treatment of high organic load OMW removal rates were roughly 10-fold higher although phytotoxic symptoms were observed. Plants were found to contribute greatly to the OMW treatment process since organics removal rates in pilot units were found to be at least 10-fold higher than in wastewater treatment in non-vegetated soil. Plant species with high added value products such as pomegranate and myrtle trees were used in this study, improving the circular economy potential of the aforementioned technology. Moreover, its efficiency has been demonstrated by quantification of the overall removal rates of key constituents as well as the contribution of the plants in the OMW treatment.
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Affiliation(s)
- Margarita A Petoussi
- School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece
| | - Nicolas Kalogerakis
- School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece.
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