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Catalysts 2018, 8(2), 70; https://doi.org/10.3390/catal8020070

Low Temperature Synthesis of Nest-Like Microsphere with Exposed (001) Facets and Its Enhanced Photocatalytic Performance by NaOH Alkalization

College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China
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Received: 31 December 2017 / Revised: 5 February 2018 / Accepted: 5 February 2018 / Published: 8 February 2018
(This article belongs to the Special Issue Organic Photoredox Catalysis)
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Abstract

In this study, we completed a simple low-temperature synthesis of nest-like titanium oxide (TiO2) microspheres with exposed (001) facets. For the first time, the photocatalytic performance was enhanced by sodium hydroxide (NaOH) alkalization. The characterization of as-synthesized F-TiO2 and OH-TiO2 were analyzed by field emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, fourier transform infrared spectroscopic analysis, ultraviolet-vis diffuse reflection spectra and Raman spectroscopy. The photocatalytic activity of the as-prepared catalyst was evaluated through the photocatalytic degradation of methylene blue (MB) and Rhodamine B (RhB) under simulated solar light. The results showed that modification using NaOH can lead to an increase in the percentage of (001) facets from 27.8% for F-TiO2 to 39.2% for OH-TiO2. OH-TiO2 showed superior catalytic photoactivity toward MB. The mechanism of NaOH on TiO2 is also discussed. View Full-Text
Keywords: F-TiO2; OH-TiO2; (001)TiO2; methylene blue; nest-like F-TiO2; OH-TiO2; (001)TiO2; methylene blue; nest-like
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hou, C.; Zhu, J.; Song, Q. Low Temperature Synthesis of Nest-Like Microsphere with Exposed (001) Facets and Its Enhanced Photocatalytic Performance by NaOH Alkalization. Catalysts 2018, 8, 70.

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