Fe-modified TiO2 nanocatalyst under blue-light irradiation

Y. L. Wei; K. W. Chen; H. P. Wang

doi:10.1116/1.3079700

Fe-modified TiO₂ nanocatalyst under blue-light irradiation

Y. L. Wei, K. W. Chen, H. P. Wang

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11 引文斯高帕斯（Scopus）

摘要

Ultraviolet (UV) and visible light active photocatalysts, 13-20 nm in size, were prepared by doping iron into anatase TiO₂ (Fe/Ti at. ratio: 0.11% and 0.49%). Greater Fe dosage led to stronger light absorbance in both UV and visible regions, and also to generally better photocatalytic activity. Fe²⁺ and Fe³⁺ coexisted in 0.11% Fe- TiO₂, while only Fe³⁺ existed in 0.49% Fe-TiO₂. A dramatic change in the molecular environment of Fe was observed after the doping process; from cubic (Fe₃ O₄) and trigonal (Fe₂ O ₃) structures into tetragonal TiO₂. Different Fe speciation in catalysts led to different kinetics for methylene blue photocatalytic degradation.

原文	English
頁（從 - 到）	1385-1387
頁數	3
期刊	Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
卷	27
發行號	3
DOIs	https://doi.org/10.1116/1.3079700
出版狀態	Published - 2009

All Science Journal Classification (ASJC) codes

電子、光磁材料
儀器
製程化學與技術
表面、塗料和薄膜
電氣與電子工程
材料化學

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10.1116/1.3079700

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abstract = "Ultraviolet (UV) and visible light active photocatalysts, 13-20 nm in size, were prepared by doping iron into anatase TiO2 (Fe/Ti at. ratio: 0.11% and 0.49%). Greater Fe dosage led to stronger light absorbance in both UV and visible regions, and also to generally better photocatalytic activity. Fe2+ and Fe3+ coexisted in 0.11% Fe- TiO2, while only Fe3+ existed in 0.49% Fe-TiO2. A dramatic change in the molecular environment of Fe was observed after the doping process; from cubic (Fe3 O4) and trigonal (Fe2 O 3) structures into tetragonal TiO2. Different Fe speciation in catalysts led to different kinetics for methylene blue photocatalytic degradation.",

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AB - Ultraviolet (UV) and visible light active photocatalysts, 13-20 nm in size, were prepared by doping iron into anatase TiO2 (Fe/Ti at. ratio: 0.11% and 0.49%). Greater Fe dosage led to stronger light absorbance in both UV and visible regions, and also to generally better photocatalytic activity. Fe2+ and Fe3+ coexisted in 0.11% Fe- TiO2, while only Fe3+ existed in 0.49% Fe-TiO2. A dramatic change in the molecular environment of Fe was observed after the doping process; from cubic (Fe3 O4) and trigonal (Fe2 O 3) structures into tetragonal TiO2. Different Fe speciation in catalysts led to different kinetics for methylene blue photocatalytic degradation.

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Fe-modified TiO2 nanocatalyst under blue-light irradiation

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Fe-modified TiO₂ nanocatalyst under blue-light irradiation