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Molecules 2017, 22(6), 950; doi:10.3390/molecules22060950

Nanocrystalline TiO2 Composite Films for the Photodegradation of Formaldehyde and Oxytetracycline under Visible Light Irradiation

1
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
2
Jinan Institute of Product Quality Inspections, Jinan 250022, China
*
Author to whom correspondence should be addressed.
Academic Editor: Rongchao Jin
Received: 3 May 2017 / Revised: 4 June 2017 / Accepted: 6 June 2017 / Published: 14 June 2017
(This article belongs to the Special Issue Nanocrystals: Synthesis, Characterization and Applications)
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Abstract

In order to effectively photodegradate organic pollutants, ZnO composite and Co-B codoped TiO2 films were successfully deposited on glass substrates via a modified sol-gel method and a controllable dip-coating technique. Combining with UV–Vis diffuse reflectance spectroscopy (DRS) and photoluminescence spectra (PL) analyses, the multi-modification could not only extend the optical response of TiO2 to visible light region but also decrease the recombination rate of electron-hole pairs. XRD results revealed that the multi-modified TiO2 film had an anatase-brookite biphase heterostructure. FE-SEM results indicated that the multi-modified TiO2 film without cracks was composed of smaller round-like nanoparticles compared to pure TiO2. BET surface area results showed that the specific surface area of pure TiO2 and the multi-modified TiO2 sample was 47.8 and 115.8 m2/g, respectively. By degradation of formaldehyde and oxytetracycline, experimental results showed that the multi-modified TiO2 film had excellent photodegradation performance under visible light irradiation. View Full-Text
Keywords: TiO2 film; multi-modification; photodegradation TiO2 film; multi-modification; photodegradation
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Wei, M.; Peng, X.-L.; Liu, Q.-S.; Li, F.; Yao, M.-M. Nanocrystalline TiO2 Composite Films for the Photodegradation of Formaldehyde and Oxytetracycline under Visible Light Irradiation. Molecules 2017, 22, 950.

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