Home >

news Help

Publication Information


Title
Japanese: 
English:Photocatalytic activity of sol-gel derived TiO2 co-doped with Fe and Nb 
Author
Japanese: ｴｽﾄﾚﾗﾝ ｶｰﾙ ﾚﾅﾝ ｴｽｺﾘﾄﾞ, SALIM CHRIS, 日野出洋文.  
English: CARL RENAN ESTRELLAN, CHRIS SALIM, HIROFUMI HINODE.  
Language English 
Journal/Book name
Japanese: 
English:15th Regional Symposium on Chemical Engineering, Proceedings 
Volume, Number, Page Volume 2        pp. 655-659
Published date Dec. 2008 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English:15th Regional Symposium on Chemical Engineering 
Conference site
Japanese: 
English:Kuala Lumpur, Malaysia 
Abstract Iron (Fe) and Niobium (Nb) were used as co-dopant metals to synthesize titanium dioxide (TiO2) photocatalysts using a temperature-controlled sol-gel method. The photocatalysts powder were characterized for their physico-chemical properties such as crystallinity (XRD), specific surface area (BET), surface composition (SEM/EDX), and transformation during the calcination process (TG/DTA). These properties were correlated against photocatalytic activity of the photocatalysts towards aqueous methyl orange (MO) solution under UV-vis and visible light irradiation. The 0.25%mol Fe:Nb loading egerged to be the most favorable co-doping amount to achieve the highest photocatalytic activity as indicated by the highest conversion of MO. Enhanced photocatalytic activity compared to undoped TiO2 was attributed to the cooperative effects of metal dopants; Fe with its band gap narrowing effect and Nb serving as electron trap, prompting the formation of ・OH radicals and leading to improved photocatalytic activity.

©2007 Tokyo Institute of Technology All rights reserved.