Self-supported nickel nanoparticles on germanophosphate glasses : synthesis and applications in catalysis
| Autor: | Rafael A. Bini, Kelen Menezes Flores Rossi de Aguiar, Jorlandio F. Felix, Guilherme Felipe Lenz, Giancarlo V. Botteselle, Ricardo Schneider, Peter Hammer, Rodrigo Schneider, Juliano A. Chaker |
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| Přispěvatelé: | Universidade Federal do Paraná (UFPR), Group of Polymers and Nanostructures, Universidade Federal de São Carlos (UFSCar), Universidade de Brasília (UnB), Universidade Estadual Paulista (Unesp), Universidade Estadual Do Oeste Do Paraná - UNIOESTE |
| Rok vydání: | 2019 |
| Předmět: |
Níquel
Materials science Scanning electron microscope General Chemical Engineering chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound symbols.namesake X-ray photoelectron spectroscopy Thermal analysis Catalisadores Nanopartículas General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Nickel chemistry Chemical engineering Benzyl alcohol symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Repositório Institucional da UnB Universidade de Brasília (UnB) instacron:UNB Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2019-10-06T17:12:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 The development of supported catalysts based on simple procedures without waste products and time-consuming 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 melt-quenching 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. Universidade Federal Do Paraná - UFPR Departamento de Engenharias e Exatas Universidade Tecnológica Federal Paraná - UTFPR Group of Polymers and Nanostructures Universidade Federal de São Carlos Departamento de Química Universidade de Brasília - UNB Instituto de Química Universidade Do Estado de São Paulo - UNESP Instituto de Química Universidade Estadual Do Oeste Do Paraná - UNIOESTE Departamento de Química Universidade de Brasília - UNB Instituto de Física Núcleo de Física Aplicada Universidade Do Estado de São Paulo - UNESP Instituto de Química |
| Databáze: | OpenAIRE |
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