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Solvothermal synthesis of Fe–C codoped TiO2 nanoparticles for visible-light photocatalytic removal of emerging organic contaminants in water

Paper ID Volume ID Publish Year Pages File Format Full-Text
41083 45876 2011 10 PDF Available
Title
Solvothermal synthesis of Fe–C codoped TiO2 nanoparticles for visible-light photocatalytic removal of emerging organic contaminants in water
Abstract

Anatase Fe/C–TiO2 nanoparticles were synthesized by a facile solvothermal method. The results showed that Fe was incorporated into TiO2 lattice by substituting Ti4+, while C was present in the form of carbonate species on the surface. Fe3+ dopants could introduce a new dopant energy level into TiO2 band gap while the carbonate species served as photosensitizer. Both of them were responsible for the visible-light photocatalytic activity of the Fe/C–TiO2. In addition, the presence of Fe dopants and carbonate species could favor the formation of surface hydroxyl groups, and inhibit recombination of photo-generated electrons and holes. Moreover, the Fe/C–TiO2 displayed larger surface area than C–TiO2 and Fe–TiO2. The synergistic effects of Fe and C codoping into TiO2 resulted in improved photocatalytic activities of Fe/C–TiO2 for degradation of bisphenol A (BPA) and clofibric acid (CA) as compared to C–TiO2, Fe–TiO2 and P25 under visible light and simulated solar light irradiation. The toxicities of BPA solutions gradually decreased throughout BPA mineralization. The photocatalytic activity of the Fe/C–TiO2 was maintained effectively even after several cyclic experiments. Finally, the possible photocatalytic mechanisms over the Fe/C–TiO2 under visible light and UV irradiation were proposed.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (200 K)Download as PowerPoint slideHighlights► Solvothermal synthesis of visible-light photoresponsive Fe–C codoped TiO2. ► Photocatalytic degradation and mineralization of bisphenol A and clofibric acid. ► Toxicity evolution of the solutions containing pollutants in the course of photocatalytic process. ► Proposed photocatalytic mechanisms over the Fe/C–TiO2 under visible light and UV irradiation.

Keywords
Fe–C codoping; Carbonate species; Photocatalytic degradation; Toxicity
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Solvothermal synthesis of Fe–C codoped TiO2 nanoparticles for visible-light photocatalytic removal of emerging organic contaminants in water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 409–410, 15 December 2011, Pages 257–266
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us