Influence of solvent on the morphology and photocatalytic properties of ZnS decorated CeO2 nanoparticles

Author(s):Show less -

Raubach, Cristiane W. ^[1] ; Polastro, Lisanias ^[1] ; Ferrer, Mateus M. ^[1] ; Perrin, Andre ^[1] ; Perrin, Christiane ^[1] ; Albuquerque, Anderson R. ^[2] ; Buzolin, Prescila G. C. ^[2] ; Sambrano, Julio R. ^[2] ; de Santana, Yuri B. V. ^[3] ; Varela, Jose A. ^[3] ; Longo, Elson ^[3]

Affiliation

^[1] Univ Fed Sao Carlos, INCTMN UFSCar, BR-13565905 Sao Carlos, SP - Brazil

^[2] Sao Paulo State Univ, UNESP, INCTMN, Grp Modelagem & Simulacao Mol, BR-17033360 Bauru, SP - Brazil

^[3] Univ Estadual Paulista, UNESP, INCTMN, BR-14801907 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Journal of Applied Physics; v. 115, n. 21 JUN 7 2014.
• Web of Science Citations: 11

Abstract

Herein, we report a theoretical and experimental study on the photocatalytic activity of CeO2 ZnS, and ZnS decorated CeO2 nanoparticles prepared by a microwave-assisted solvothermal method. Theoretical models were established to analyze electron transitions primarily at the interface between CeO2 and ZnS. As observed, the particle morphology strongly influenced the photocatalytic degradation of organic dye Rhodamine B. A model was proposed to rationalize the photocatalytic behavior of the prepared decorated systems taking into account different extrinsic and intrinsic defect distributions, including order-disorder effects at interfacial and intra-facial regions, and vacancy concentration. (C) 2014 AIP Publishing LLC. (AU)

• FAPESP's process: 10/19484-0 - Calcium sulfide: morphological and optical properties
• Grantee: Cristiane Wienke Raubach Ratmann
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 12/17500-3 - Investigation of growth mechanisms and properties of photoluminescent Ag2WO4
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Visiting Researcher Grant - International