In this work, we report the obtention of the LDH@Bi₂WO₆ heterostructure using an easy and low-cost method. The LDH was synthesized through the co-precipitation method with the metallic ratio of Mg²⁺/Al³⁺ = 2.0, while the bismuth tungstate nanoplates were prepared using the hydrothermal method. The LDH@Bi₂WO₆ heterostructure was obtained mixing LDH in water with 20 wt% of Bi₂WO₆. The LDH, Bi₂WO₆ and LDH@Bi₂WO₆ heterostructure were characterized by XRD, FTIR, N₂ sorption, SEM, TEM, Raman, and DRS. The photocatalytic activity of these materials was evaluated by the photodegradation of RhB in aqueous solution under simulated sunlight irradiation. The characterization revealed the deposition of LDH on the surface of Bi₂WO₆, as well as a considerable increase in the photocatalytic activity (synergistic effect) of the LDH@Bi₂WO₆ heterostructure when compared with pure LDH and Bi₂WO₆. For this material, the degradation rate, velocity constant rate, and half-life time experimentally obtained were equal to 98.7%, 51.9 × 10^–3 min⁻¹, and 13.3 min, at the end of 75 min in the photodegradation of RhB. It is also 166 times faster than the photolysis test, with a high stability after five consecutive photocatalytic cycles. Therefore, the LDH@Bi₂WO₆ heterostructure is a promising material in the photodegradation of organic pollutants using visible-light as the source of radiation.

在这项工作中，我们报告了使用一种简单且低成本的方法获得了LDH @ Bi ₂ WO ₆异质结构。通过共沉淀法以金属比Mg ²⁺ / Al ³⁺ = 2.0合成LDH ，而水热法制备钨酸铋纳米板。通过将LDH在水中与20wt％的Bi ₂ WO ₆混合而获得LDH @ Bi ₂ WO ₆异质结构。通过XRD，FTIR，N ₂对LDH，Bi ₂ WO ₆和LDH @ Bi ₂ WO ₆异质结构进行表征。吸附，SEM，TEM，拉曼和DRS。这些材料的光催化活性通过在模拟阳光照射下水溶液中RhB的光降解来评估。表征显示LDH在Bi ₂ WO ₆表面上的沉积，以及与纯LDH和Bi ₂ WO ₆相比，LDH @ Bi ₂ WO ₆异质结构的光催化活性（协同效应）显着增加。对于这种材料，实验获得的降解率，速度恒定率和半衰期等于98.7％，51.9×10 ^–3  min ^-1在RhB的光降解过程中，在75分钟结束时为13.3分钟。它也比光解试验快166倍，在五个连续的光催化循环后具有很高的稳定性。因此，LDH @ Bi ₂ WO ₆异质结构是使用可见光作为辐射源光降解有机污染物的有前途的材料。