BORON-DOPED TIN DIOXIDE FILMS FOR ENVIRONMENTAL APPLICATIONS

Xiang-Bin Kong, Fang Li, Zhong-Nan Qi, Lei Qi and Ming-Ming Yao
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Xiang-Bin Kong: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
Fang Li: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
Zhong-Nan Qi: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
Lei Qi: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
Ming-Ming Yao: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China

Surface Review and Letters (SRL), 2017, vol. 24, issue 05, 1-10

Abstract: In order to enhance the photodegradation of organic pollutants, Boron-doped tin dioxide (B-doped SnO2) composite films with narrowed band gap were successfully prepared by the sol–gel method. The samples are characterized by UV–Vis absorption spectroscopy, photoluminescence (PL), X-ray diffraction (XRD), high-resolution field emission scanning electron microscope (FE-SEM), X-ray energy dispersive spectroscopy (EDS), and Brunauer–Emmett–Teller (BET). UV–Vis absorption spectroscopy results revealed that the absorption of the B-doped SnO2 film was clearly broadened to the visible light area. PL results showed that the recombination rate of the photo-generated species was effectively prohibited by B doping. The photocatalytic properties of the films were evaluated by degradation of organic pollutants including acid naphthol red (ANR) dye and formaldehyde solutions. Experimental results indicated that the B-doped SnO2 film exhibited an excellent photocatalytic activity under visible light irradiation due to its strong visible light response and diminished electron–hole recombination.

Keywords: SnO2 film; B doping; visible light response; photodegradation (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1142/S0218625X17500597

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