Nanoflowers (NFs)-shape-controlled noble metal nanocrystals-have garnered significant attention because of their novel catalytic properties and applicability. In this paper, we report the preparation and catalytic performance of a magnetic FeO-supported AuNF catalyst with a clean surface. The magnetically supported AuNFs were obtained by using magnetic FeO as the support. However, when nonmagnetic γ-AlO was utilized as the support, the AuNFs did not exhibit a magnetic response. These supported AuNFs were utilized to catalyze the oxidation of 1-phenylethyl alcohol to acetophenone using air (1 atm) as the oxidant. The rate of formation of acetophenone using supported AuNFs was 8-fold higher than that of acetophenone using supported spherical Au nanoparticles of comparable size. In addition, the FeO-supported AuNFs exhibited a higher rate of formation of acetophenone than the AlO-supported AuNFs. The FeO-supported AuNFs were recovered using a magnet, and the recovered catalyst was reused under identical catalytic reaction conditions. The rate of formation of acetophenone using recovered FeO-supported AuNFs remained unchanged, demonstrating no loss of catalytic activity.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7331204 | PMC |
| http://dx.doi.org/10.1021/acsomega.0c02340 | DOI Listing |
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