Photocatalytic degradation of methylene blue using a zinc oxide-cerium oxide catalyst

Autor:	Preetham Halugondanahalli Sadashivaiah, Venkatesham Vuppala, Satyanarayana Suggala Venkata, Madhu Gattumane Motappa
Rok vydání:	2012
Předmět:	Cerium oxide Aqueous solution Inorganic chemistry Oxide chemistry.chemical_element Zinc law.invention Catalysis chemistry.chemical_compound chemistry law Photocatalysis Calcination Methylene blue
Zdroj:	European Journal of Chemistry. 3:191-195
ISSN:	2153-2257 2153-2249
DOI:	10.5155/eurjchem.3.2.191-195.564
Popis:	The photocatalytic degradation of methylene blue in aqueous solution was studied using a UV source in the presence of zinc oxide-cerium oxide (ZnO-Ce 2 O 3 ) as photocatalyst, which was synthesized by a gel combustion technique and characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy. The particle size of the catalyst was found to be in between 45 to 60 nm. The effects of catalyst loading (1.0-8.0 g/L), pH (4.0-9.2) and dye concentration (5.0-20.0 mg/L) on the degradation were studied in a batch reactor. The degradation rate was found to be strongly dependent on these experimental parameters. Appreciable degradation of methylene blue was achieved when the catalyst was calcined before use. Best results were observed with a catalyst loading of 5 g/L at pH = 9.2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bef14ecec6424059633e543295404bed https://doi.org/10.5155/eurjchem.3.2.191-195.564 Zobrazit plný text záznamu