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Open AccessArticle

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

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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Catalysts, EISSN 2073-4344, Published by MDPI AG
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