Efecto de la longitud de onda en la fotodegradación de azul de metileno con perovskitas del tipo sr(1-x)hoxzrtio.9o3, (x= 1%, 3%, 6%, 9%)
El dióxido de titanio es el fotocatalizador lider en la industría utilizado principalmente para procesos de remediación del medio ambiente y manofactura de productos químicos, sin embargo es necesario explorar otros materiales que presenten propiedades catalíticas similares o mejores a las del TiO2...
- Autores:
-
Huertas Montoya, Edison
- Tipo de recurso:
- http://purl.org/coar/version/c_b1a7d7d4d402bcce
- Fecha de publicación:
- 2016
- Institución:
- Universidad Industrial de Santander
- Repositorio:
- Repositorio UIS
- Idioma:
- spa
- OAI Identifier:
- oai:noesis.uis.edu.co:20.500.14071/34965
- Palabra clave:
- Perovskitas
Dopaje Con Lantanidos
Azul De Metileno
Estudio Cinético
Actividad Fotocatalítica.
Titanium dioxide is the most used photocatalyst for processes of environmental remediation and chemical manufacturing
however it is necessary to explore other catalytic materials with similar or better characteristics than TiO2 and also to be active in a wider spectral range like visible light
since this absorbs at wavelengths near to 380 nm corresponding to the ultraviolet range (UV). Given this Delgado et al have developed synthetic methods for the preparation of strontium titanates doped with rare earth elements (A1-y LnyZr0.1Ti0.9O3
con Ln = Eu
Sm
Dy
Ho) which exhibit a redshift on Eg band. In a previous study conducted at the Center for Research in Catalysis
the photocatalytic activity of mixed oxide perovskite doped with rare earth elements such as europium
samarium
dysprosium and holmium were evaluated
results show that the solid doped with Ho has more activity at wavelengths between 450-750 nm. In this research the photocatalytic activity of perovskites Sr(1-x)HoxZrTi0.9O3 con x = 1%
3%
6%
9%
was evaluated using as model reaction photodegradation of methylene blue under aerobically conditions at neutral pH
thus varying the concentration of Ho in the catalyst is expected that Eg band moves to the visible
therefore the effect of incident wavelength was studied for the degradation of methylene blue.
- Rights
- License
- Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)