| Autor: |
Zhongping Li, Yuxin Zhang, Ruiqi Zhu, Guangming Wen, Chuan Dong, Hung-Wing Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Electrochemistry Communications, Vol 104, Iss , Pp - (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1388-2481 |
| DOI: |
10.1016/j.elecom.2019.106484 |
| Popis: |
Loading metal nanoparticles on the surface of nanosheet supports is an attractive approach to enhancing their catalytic performance. Herein, palladium nanoflowers (Pd NFs) were prepared on amino-functionalized fullerene (C60-NH2) by hydrothermal self-assembly using ethylenediamine (EA). Reduction of Pd ions resulted in the formation of Pd nanoflowers with a fullerene bottom layer and Pd petals. Ethylenediamine, a functionalized fullerene precursor, afforded a nitrogen-rich fullerene that ensures strong interactions between Pd2+ and functionalized fullerene and improves the chemical and morphological stability of the resulting Pd nanoflowers. Compared with spherical Pd nanoparticles supported on amino-functionalized fullerene (C60-NH2), the Pd nanoflowers (Pd NFs/C60-NH2) exhibit greatly superior activity towards the reduction of 4-nitrophenol (4-NP). The nanoflowers exhibit not only a remarkable UV–vis response for the conversion of 4-nitrophenol to 4-aminophenol (4-AP) (99% in 2.0 min) with a turnover frequency of 12.35 min−1 but also a high electrochemical sensitivity to 4-nitrophenol over a wide linear concentration range (5–1000 μM), providing a detection limit of 0.09 μM (S/N = 3) at room temperature. The excellent catalytic stability and durability of Pd NFs/C60-NH2 offer promising applications in catalysis. Keywords: 4-Nitrophenol reduction, Fullerene (C60), Self-assembly, Pd nanoflowers |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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