Bibliographic Details
| Summary: | A new δ-FeOOH supported nano-Au catalyst was prepared by a facile method using HAuCl4 as the gold source and NaBH4 as the reducing agent. The samples (denoted as AuNPs/FeOOH) were characterized by means of X-ray diffraction (XRD), UV-vis and infrared spectroscopies and scanning electron microscope (SEM). The obtained characterization data confirmed the formation of Au nanoparticles on the δ-FeOOH matrix surface. SEM observations showed that Au nanoparticles have a spherical morphology and good dispersion with a narrow size distribution on the surface of iron (III) oxyhydroxide. The catalyst exhibits significantly high catalytic activity for hydrogenation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) at room temperature. The high performance obtained can be attributed to the specific characteristics of the nanostructure of the catalyst of nano-Au deposited on the external surface of δ-FeOOH, including plenty of oxygen-containing groups of δ-FeOOH for anchoring AuNPs. Moreover, the catalytic activity increased when the AuNPs content in the δ-FeOOH support. The AuNPs-based δ-FeOOH hybrids are interesting catalysts for hydrogenation of nitrophenols to aminophenols. |
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| Main Authors: | Azevedo,Camila Kauany da Silva |
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| Other Authors: | Reis,Eduardo Arizono dos; Germino,José Carlos; Moreto,Jéferson Aparecido; Terezo,Ailton José; Quites,Fernando Júnior |
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| Subject: | gold nanoparticles iron (III) oxyhydroxide catalysis nitrophenols |
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| Year: | 2017 |
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| Country: | Brazil |
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| Document type: | article |
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| Access type: | open access |
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| Associated institution: | IBICT |
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| Language: | Portuguese |
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| Origin: | Oasisbr |
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