采用简单的水热法获得了一维结构的α-MoO3纳米带,利用XRD、SEM、TEM、EDS和UV-Vis-DRS光谱等测试手段对其相组成、形貌、纯度和光吸收特性进行表征。以噻吩模拟含硫污染物探讨了α-MoO3纳米带对模拟FCC汽油的光催化氧化脱硫( Photo-Cat-ODS)活性及其光催化氧化脱硫机理。结果表明:一维α-MoO3纳米带有利于抑制光生电子和空穴的复合,对模拟 FCC 汽油光催化脱硫活性远高于商品 MoO3和商品二氧化钛(P25),可见光光照240 min模拟汽油FCC的脱硫率达到86.9%。
1 D α-MoO3 nanobels were prepared by facile hydrothermal synthesis. Phase, morphology, purity and optical adsorption properties of as-synthesized samples were investigated by XRD, SEM, TEM, EDS and UV-Vis-DRS spectra. Furthermore, thiophene was selected as a typical pollutant of simulated fuel to evaluate the photocatalytic oxidative desulfurization (Photo-Cat-ODS) activity of as-prepared 1 D α-MoO3 nanobelt and the mechanism for the photocatalytic oxidation of thiophene was explored. The photocatalysis experimental results in-dicate that photocatalytic oxidative desulfurization activity of 1 Dα-MoO3 nanobelts is better than that of purchased MoO3 and P25 due to their reducing recombination of photogenerated electron-hole pairs. The desulfurization rate of simulated FCC fuel reaches 86.9%under visible light irradiation for 240 min.
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