Self-supported nickel nanoparticles on germanophosphate glasses : synthesis and applications in catalysis
The development of supported catalysts based on simple procedures without waste products and timeconsuming steps is highly desirable. In this paper, self-supported nickel-based nanoparticles were obtained at the surface of the germanophosphate glasses by bottom-up process and evaluated as potential...
| Main Authors: | Lenz, Guilherme Felipe, Schneider, Rodrigo, Aguiar, Kelen M. F. Rossi de, Bini, Rafael A., Chaker, Juliano Alexandre, Hammer, Peter, Botteselle, Giancarlo V., Felix, Jorlandio Francisco, Schneider, Ricardo |
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| Format: | Artigo |
| Language: | Inglês |
| Published: |
Royal Society of Chemistry
2020
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| Subjects: | |
| Online Access: |
https://repositorio.unb.br/handle/10482/37043 |
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| Summary: |
The development of supported catalysts based on simple procedures without waste products and timeconsuming
steps is highly desirable. In this paper, self-supported nickel-based nanoparticles were obtained at the surface of the germanophosphate glasses by bottom-up process and evaluated as potential catalysts for the benzyl alcohol oxidation and bis(indolyl)methanes synthesis. A classical meltquenching technique was used for preparing the nickel-doped germanophosphate glasses, followed by annealing under a hydrogen atmosphere at 400 C for two different times. The approach enabled the
synthesis of self-supported nanoparticles as a homogeneous film, covering the glass surface. The physical and chemical properties of synthesized glasses were characterized by UV-vis and Raman spectroscopies and thermal analysis. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were performed to monitor the growth process, morphology and chemical bonding structure of the nanoparticles surface. |
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