One-Step Synthesis of Ultra-Small RhNPs in the Microreactor System and Their Deposition on ACF for Catalytic Conversion of 4–Nitrophenol to 4–Aminophenol.
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| Title: | One-Step Synthesis of Ultra-Small RhNPs in the Microreactor System and Their Deposition on ACF for Catalytic Conversion of 4–Nitrophenol to 4–Aminophenol. |
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| Authors: | Pach, Adrianna1 (AUTHOR), Wojtaszek, Konrad1 (AUTHOR), Elhadad, Ahmed Ibrahim1 (AUTHOR), Michałek, Tomasz1 (AUTHOR), Kula, Anna1 (AUTHOR), Luty-Błocho, Magdalena1 (AUTHOR) mlb@agh.edu.pl |
| Source: | Nanomaterials (2079-4991). Sep2025, Vol. 15 Issue 17, p1375. 16p. |
| Subjects: | Metal nanoparticles, Catalytic activity, Aminophenols, Platinum group, Carbon fibers, Nitrophenols, Solvents, Microreactors |
| Abstract: | The rising demand for platinum-group metals, driven by their essential applications in catalysis, energy storage, and chemical conversion, underscores the need to identify new sources for their recovery. Waste solutions originating from industrial processes offer a promising alternative source of noble metals. However, due to their typically low concentrations, effective recovery requires a highly targeted approach. In this study, we present a synthetic waste solution containing trace amount of Rh(III) ions as both a medium for metal ion recovery and a direct precursor for catalyst synthesis. Using a bimodal water–ethanol solvent system, ultra-small rhodium nanoparticles were synthesized and subsequently immobilized onto activated carbon fibers (ACFs) within a microreactor system. The resulting Rh@ACF catalyst demonstrated high efficiency in the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP), serving as a model catalytic reaction. The Rh@ACF catalyst, containing 4.24 µg Rh per milligram of sample, exhibited notable catalytic activity, achieving 75% conversion of 4-NP to 4-AP within 1 h. Full conversion to 4-AP was also reached within 5 min, but requires extra NaBH4 addition to the catalytic mixture. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 187983479 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: One-Step Synthesis of Ultra-Small RhNPs in the Microreactor System and Their Deposition on ACF for Catalytic Conversion of 4–Nitrophenol to 4–Aminophenol. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pach%2C+Adrianna%22">Pach, Adrianna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wojtaszek%2C+Konrad%22">Wojtaszek, Konrad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Elhadad%2C+Ahmed+Ibrahim%22">Elhadad, Ahmed Ibrahim</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Michałek%2C+Tomasz%22">Michałek, Tomasz</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kula%2C+Anna%22">Kula, Anna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luty-Błocho%2C+Magdalena%22">Luty-Błocho, Magdalena</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mlb@agh.edu.pl</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Sep2025, Vol. 15 Issue 17, p1375. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Metal+nanoparticles%22">Metal nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink><br /><searchLink fieldCode="DE" term="%22Aminophenols%22">Aminophenols</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum+group%22">Platinum group</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fibers%22">Carbon fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrophenols%22">Nitrophenols</searchLink><br /><searchLink fieldCode="DE" term="%22Solvents%22">Solvents</searchLink><br /><searchLink fieldCode="DE" term="%22Microreactors%22">Microreactors</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The rising demand for platinum-group metals, driven by their essential applications in catalysis, energy storage, and chemical conversion, underscores the need to identify new sources for their recovery. Waste solutions originating from industrial processes offer a promising alternative source of noble metals. However, due to their typically low concentrations, effective recovery requires a highly targeted approach. In this study, we present a synthetic waste solution containing trace amount of Rh(III) ions as both a medium for metal ion recovery and a direct precursor for catalyst synthesis. Using a bimodal water–ethanol solvent system, ultra-small rhodium nanoparticles were synthesized and subsequently immobilized onto activated carbon fibers (ACFs) within a microreactor system. The resulting Rh@ACF catalyst demonstrated high efficiency in the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP), serving as a model catalytic reaction. The Rh@ACF catalyst, containing 4.24 µg Rh per milligram of sample, exhibited notable catalytic activity, achieving 75% conversion of 4-NP to 4-AP within 1 h. Full conversion to 4-AP was also reached within 5 min, but requires extra NaBH4 addition to the catalytic mixture. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano15171375 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1375 Subjects: – SubjectFull: Metal nanoparticles Type: general – SubjectFull: Catalytic activity Type: general – SubjectFull: Aminophenols Type: general – SubjectFull: Platinum group Type: general – SubjectFull: Carbon fibers Type: general – SubjectFull: Nitrophenols Type: general – SubjectFull: Solvents Type: general – SubjectFull: Microreactors Type: general Titles: – TitleFull: One-Step Synthesis of Ultra-Small RhNPs in the Microreactor System and Their Deposition on ACF for Catalytic Conversion of 4–Nitrophenol to 4–Aminophenol. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pach, Adrianna – PersonEntity: Name: NameFull: Wojtaszek, Konrad – PersonEntity: Name: NameFull: Elhadad, Ahmed Ibrahim – PersonEntity: Name: NameFull: Michałek, Tomasz – PersonEntity: Name: NameFull: Kula, Anna – PersonEntity: Name: NameFull: Luty-Błocho, Magdalena IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 15 – Type: issue Value: 17 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
| ResultId | 1 |
