棒状 NbO/NbCT 复合材料的简便水热合成及其可见光驱动下有机污染物的光催化降解性能。
Facile hydrothermal synthesis of rod-like NbO/NbCT composites for visible-light driven photocatalytic degradation of organic pollutants.
机构信息
College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China.
College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China.
出版信息
Environ Res. 2021 Feb;193:110587. doi: 10.1016/j.envres.2020.110587. Epub 2020 Dec 9.
The MXene-based transition metal oxide composite is a potential candidate for photocatalysts. Rod-like pseudohexagonal phase NbO/NbCT composites were synthesized by a simple hydrothermal oxidation of 2D layered NbCT. The NbO/NbCT composites show superior photocatalytic activity for 98.5% of degradation of Rhodamine B (RhB) for 120 min and 91.2% of tetracycline hydrochloride (TC-HCl) for 180 min under visible light irradiation. The Schottky junction is formed between NbO nanorods and NbCT and the photo-generated carriers are effectively separated, enhancing the photocatalytic activity of the NbO/NbCT. High photoactivity and cycle stability of NbO/NbCT composites indicate that hydrothermal oxidation of 2D layered NbCT is an alternative to prepare efficient photocatalyst for degradation of organic pollutants.
基于 MXene 的过渡金属氧化物复合材料是一种有潜力的光催化剂候选材料。通过对 2D 层状 NbCT 的简单水热氧化，合成了棒状类六方相 NbO/NbCT 复合材料。在可见光照射下，NbO/NbCT 复合材料对 Rhodamine B（RhB）的降解率在 120 min 内达到 98.5%，对盐酸四环素（TC-HCl）的降解率在 180 min 内达到 91.2%，表现出优异的光催化活性。NbO 纳米棒和 NbCT 之间形成肖特基结，光生载流子得到有效分离，从而提高了 NbO/NbCT 的光催化活性。NbO/NbCT 复合材料具有高光活性和循环稳定性，表明通过 2D 层状 NbCT 的水热氧化是制备高效光催化剂以降解有机污染物的一种替代方法。
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