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Molecules 2017, 22(6), 950;

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

Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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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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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