RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities
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-Fe<sub>2</sub>O<sub>3</sub>) nanoparticles (Hem-NPs) were manufactured in this...
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2022-08-01
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| author | Ebrahim Saied Salem S. Salem Abdulaziz A. Al-Askar Fathy M. Elkady Amr A. Arishi Amr H. Hashem |
| author_facet | Ebrahim Saied Salem S. Salem Abdulaziz A. Al-Askar Fathy M. Elkady Amr A. Arishi Amr H. Hashem |
| author_sort | Ebrahim Saied |
| collection | DOAJ |
| description | 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-Fe<sub>2</sub>O<sub>3</sub>) nanoparticles (Hem-NPs) were manufactured in this work by utilizing a cost-effective and ecofriendly approach that included a biomass filtrate of <i>A. niger</i> 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 <i>E. coli</i>, <i>B. subtilis</i>, and <i>S. mutans</i> with MICs of 125, 31.25, and 15.62 µg/mL, respectively. Moreover, Hem-NPs exhibited antifungal activity against <i>C. albicans</i> and <i>A. fumigatus</i>, 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 <i>A. niger</i> AH1 and demonstrated both antimicrobial activity and photocatalytic activity against CV dye. |
| format | Article |
| id | doaj-art-505c74920cd4411b98b5b94ab80dfb9c |
| institution | Kabale University |
| issn | 2306-5354 |
| language | English |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
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| series | Bioengineering |
| spelling | doaj-art-505c74920cd4411b98b5b94ab80dfb9c2025-02-11T11:24:02ZengMDPI AGBioengineering2306-53542022-08-019839710.3390/bioengineering9080397RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic ActivitiesEbrahim Saied0Salem S. Salem1Abdulaziz A. Al-Askar2Fathy M. Elkady3Amr A. Arishi4Amr H. Hashem5Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City 11884, EgyptBotany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City 11884, EgyptDepartment of Botany and Microbiology, Faculty of Science, King Saud University, Riyadh 12372, Saudi ArabiaMicrobiology and Immunology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11884, EgyptSchool of Molecular Sciences, The University of Western Australia, Perth, WA 6009, AustraliaBotany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City 11884, EgyptNanoparticles (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-Fe<sub>2</sub>O<sub>3</sub>) nanoparticles (Hem-NPs) were manufactured in this work by utilizing a cost-effective and ecofriendly approach that included a biomass filtrate of <i>A. niger</i> 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 <i>E. coli</i>, <i>B. subtilis</i>, and <i>S. mutans</i> with MICs of 125, 31.25, and 15.62 µg/mL, respectively. Moreover, Hem-NPs exhibited antifungal activity against <i>C. albicans</i> and <i>A. fumigatus</i>, 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 <i>A. niger</i> AH1 and demonstrated both antimicrobial activity and photocatalytic activity against CV dye.https://www.mdpi.com/2306-5354/9/8/397hematite (α-Fe<sub>2</sub>O<sub>3</sub>)iron oxide nanoparticlesantimicrobial activityphotocatalytic activity |
| spellingShingle | Ebrahim Saied Salem S. Salem Abdulaziz A. Al-Askar Fathy M. Elkady Amr A. Arishi Amr H. Hashem RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities Bioengineering hematite (α-Fe<sub>2</sub>O<sub>3</sub>) iron oxide nanoparticles antimicrobial activity photocatalytic activity |
| title | RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities |
| title_full | RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities |
| title_fullStr | RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities |
| title_full_unstemmed | RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities |
| title_short | RETRACTED: Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <em>Aspergillus niger</em> and Their Antimicrobial and Photocatalytic Activities |
| title_sort | retracted mycosynthesis of hematite α fe sub 2 sub o sub 3 sub nanoparticles using em aspergillus niger em and their antimicrobial and photocatalytic activities |
| topic | hematite (α-Fe<sub>2</sub>O<sub>3</sub>) iron oxide nanoparticles antimicrobial activity photocatalytic activity |
| url | https://www.mdpi.com/2306-5354/9/8/397 |
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