Three zeolites with different structures (mazzit, faujasite and MFI) were prepared by hydrothermal way, and then were used to stabilize the Fe and Ni nanoparticles using ion exchange followed by treatment with a solution of NaBH₄ as reducing agent. The designed nanocatalysts were used in the catalytic reduction of methylene blue dye (MB) and 4-nitrophenol (4-NP) in a simple and binary system under NaBH₄ solution to determine their effectiveness in wastewater treatment. The obtained samples were characterized by XRD, XPS, nitrogen sorption at 77 K, XRF, FTIR, UV–vis, SEM and TEM. The obtained results revealed that the structure of the zeolites was well retained after immobilization of metal nanoparticles (NPs), but their textural properties were slightly reduced. The XPS results clearly show that the zero charge nanoparticles were well obtained using NaBH₄ solution. As confirmed by TEM the nanoparticles were well dispersed in the surface of the zeolites their sizes were around 3–13 nm for the zeolites modified by Fe NPs and 2–6 nm for those modified by Ni NPs. The catalyst Ni–Y exhibited excellent catalytic activity towards the reduction of MB dye and 4-NP in binary and simple system due to its large surface area containing well dispersed Ni nanoparticles. The rate constant in a simple system was 0.02 s⁻¹ and 0.005 s⁻¹ for 4-NP and MB dye respectively, while in the binary system was 0.002 s⁻¹ and 0.014 s⁻¹. The catalyst Ni–Y was used in five consecutive experiments without important loss of activity, confirming its stability.

通过水热法制备了三种结构不同的沸石（Mazzit，八面沸石和MFI），然后通过离子交换将其稳定在Fe和Ni纳米粒子上，然后用NaBH ₄作为还原剂进行处理。设计的纳米催化剂用于在NaBH ₄下的简单二元体系中催化还原亚甲基蓝染料（MB）和4-硝基苯酚（4-NP）确定其在废水处理中的有效性的解决方案。获得的样品通过XRD，XPS，77 K下的氮吸附，XRF，FTIR，UV-vis，SEM和TEM进行表征。所得结果表明，固定金属纳米颗粒（NPs）后，沸石的结构得到了很好的保留，但其质地却略有降低。XPS结果清楚地表明，使用NaBH _4可以很好地获得零电荷纳米颗粒解。TEM证实，纳米颗粒良好地分散在沸石表面，其尺寸在Fe NPs修饰的沸石约3–13 nm处，而在Ni NPs修饰的沸石约2–6 nm处。Ni-Y催化剂由于其大的表面积包含分散良好的Ni纳米颗粒，因此对二元和简单系统中的MB染料和4-NP还原具有优异的催化活性。在简单系统中，4-NP和MB染料的速率常数分别为0.02 s ^-1和0.005 s ^-1，而在二元系统中，速率常数为0.002 s ^-1和0.014 s ^-1。Ni-Y催化剂连续五个实验中使用，没有明显的活性损失，证实了其稳定性。