In this study, the preparation of ternary photocatalyst using a simple hydrothermal method is shown with high performance. A ternary composite consisting of tungsten sulfide (WS2) nanosheets, titanium oxide (TiO2) and gold (Au) nanoparticles is used to the extend the visible-light absorption region of TiO₂. The morphological and spectroscopic natures of the prepared sample were analyzed using scanning electron microscopy (SEM), Raman spectroscopy and ultraviolet–visible (UV–vis) photospectroscopy. The photocatalysis measurement for photodegradation of methylene blue dye was performed under the visible light. The photocatalytic studies suggest that in the ternary composite, consisting of three materials with different energy levels, the electrons excited form a cycle to lower the probability for the recombination of electron–hole pairs enhancing the property of photocatalytic activity of TiO₂.

中文翻译：

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水热合成法制备 WS2-TiO2-Au 用于可见光下的光催化

在这项研究中，使用简单的水热法制备三元光催化剂具有高性能。由硫化钨 (WS) 组成的三元复合材料2)纳米片，二氧化钛（TiO2)_{金(Au)纳米粒子用于扩展TiO 2}的可见光吸收区域。使用扫描电子显微镜 (SEM)、拉曼光谱和紫外-可见 (UV-vis) 光光谱分析制备的样品的形态和光谱性质。亚甲基蓝染料光降解的光催化测量在可见光下进行。光催化研究表明，在由三种不同能级材料组成的三元复合材料中，激发的电子形成一个循环，降低了电子-空穴对复合的概率，增强了TiO ₂的光催化活性。