Artículos de revistas
Self-supported nickel nanoparticles on germanophosphate glasses: Synthesis and applications in catalysis
Fecha
2019-01-01Registro en:
RSC Advances, v. 9, n. 30, p. 17157-17164, 2019.
2046-2069
10.1039/c9ra02927c
2-s2.0-85067512832
6466841023506131
0000-0002-3823-0050
Autor
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
Institución
Resumen
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.