Synthesis of porous TiO2 nanowires and their photocatalytic properties

Yonglun TANG, Haibo REN, Jiarui HUANG

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Front. Optoelectron. ›› 2017, Vol. 10 ›› Issue (4) : 395-401. DOI: 10.1007/s12200-017-0735-3
RESEARCH ARTICLE
RESEARCH ARTICLE

Synthesis of porous TiO2 nanowires and their photocatalytic properties

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Abstract

Porous titanium dioxide (TiO2) nanowires were synthesized via a surfactant-free hydrothermal method followed by acid-washing process and calcination. The structures and morphologies of products were characterized by field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) N2 adsorption-desorption analyses. The analysis of FESEM suggested the precursor was composed of a vast of uniform nanostructures like wires. The nanowire-like precursor was transformed into the porous nanowire after acid-treatment and calcination at 500°C for 2 h in air. The surface area of as-synthesized TiO2 nanowires calculated by BET is 86.4 m2/g. Furthermore, the photocatalytic properties of synthesized porous TiO2 nanowires were evaluated through the degradation of methylene blue (MB) and Rhodamine B (RhB). The results clearly suggested that the as-prepared porous TiO2 nanowires showed remarkable photocatalytic performance on the degradation of RhB and MB due to their small size of nanocrystallites and the porous naonstructure.

Keywords

titanium dioxide (TiO2) / nanowire / porous / photocatalyst / photocatalytic performance

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Yonglun TANG, Haibo REN, Jiarui HUANG. Synthesis of porous TiO2 nanowires and their photocatalytic properties. Front. Optoelectron., 2017, 10(4): 395‒401 https://doi.org/10.1007/s12200-017-0735-3

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2017 Higher Education Press and Springer-Verlag Berlin Heidelberg
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