Wei Gan, Yan Guo, Dan Zhu, Min Ling, Can Jiang, Shengfu Zhang
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引用次数: 0
Abstract
With the increasing problems caused by water pollution, the use of photocatalytic oxidation to remove pollutants from wastewater is a sustainable strategy. However, it is challenging to develop well-designed photocatalysts with high photo-quantum efficiency and the comprehension of their photocatalytic reaction mechanisms. Herein, a R/A-TiO2/Ti3C2Tx (R: rutile; A: anatase) photocatalyst with different ratios of rutile and anatase phases was prepared by a facile hydrothermal method. The results showed that the number of rutile and anatase phases could be readily regulated by adjusting the dosage of titanium isopropoxide (TTIP) and Ti3C2Tx. The prepared R/A-TiO2/Ti3C2Tx-0.2 contained a mass fraction of 42% rutile phase and 58% anatase phase, with the interface between the two phases exhibited a tightly bonded structure. Meanwhile, the heterojunction between the heterophase TiO2 and Ti3C2Tx interfaces improved the photo-quantum efficiency of R/A-TiO2/Ti3C2Tx, and the degradation efficiency of Rhodamine B (RhB) by R/A-TiO2/Ti3C2Tx-0.2 was 77.82% in 2 h under ultraviolet light illumination. Ultimately, the active species capture experiments verified that the primary active species in the photocatalytic reaction was h+, ·OH, and·O2−. This work could shed light on the new approach to the rational design of high-efficiency heterophase TiO2-based photocatalysts.
Graphical Abstract
R/A-TiO2/Ti3C2Tx photocatalysts with heterojunctions were controllably synthesized by an EDTA-2Na-assisted hydrothermal method.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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