Comparative study on photocatalytic performances of crystalline α- and β-Bi2O3 nanoparticles under visible light

Autor:	Jea-Gun Park, Houcine Bouzid, Adel A. Ismail, Saleh A. Al-Sayari, Mohd Faisal, Mohammed Jalalah
Rok vydání:	2015
Předmět:	Materials science General Chemical Engineering Nanoparticle Polyethylene glycol Photochemistry Hydrothermal circulation chemistry.chemical_compound symbols.namesake chemistry Photocatalysis symbols Photodegradation Raman spectroscopy Monoclinic crystal system Visible spectrum Nuclear chemistry
Zdroj:	Journal of Industrial and Engineering Chemistry. 30:183-189
ISSN:	1226-086X
Popis:	α- and β-Bi2O3 nanoparticles were synthesized in the presence of either urea or polyethylene glycol. The XRD, TEM, and Raman analysis indicated that α-(monoclinic) Bi2O3 nanoparticles were obtained using either sol–gel or hydrothermal method in the presence of urea; however β-(tetragonal) phase of Bi2O3 was formed using hydrothermal method in the presence of polyethylene glycol. The β-Bi2O3 nanoparticles exhibited higher photocatalytic activity than α-Bi2O3. MB was completely photodegraded after 6 h of visible light illumination using β-Bi2O3 photocatalyst whereas only 30% was photodegraded using α-Bi2O3. The photodegradation rate of β-Bi2O3 was 5.7 times greater than that α-Bi2O3 nanoparticles.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8a90b2a24c62acea1e67e545c3d65074 https://doi.org/10.1016/j.jiec.2015.05.020 Zobrazit plný text záznamu Full Text from ScienceDirect