LiNbO₃ ceramic was fabricated using solid‐state reaction route. Silver nanoparticles (NPs) were loaded on LiNbO₃ at room temperature using silver nitrate and polyethylene glycol reagents, without the use of external heat and light energy. The X‐ray diffraction showed only LiNbO₃ phase in Ag‐loaded LiNbO₃ sample with no peak related to Ag metal due to small fraction of Ag loading. X‐ray energy diffraction spectroscopy elemental color mapping confirmed the uniform loading of Ag metal on LiNbO₃ particles. Ag metal was loaded in the form of NPs as visualized under transmission electron microscope. Ag NPs‐loaded LiNbO₃ showed enhanced absorption of visible light owing to the phenomenon of surface plasmon resonance (SPR). The loading of Ag NPs had no effect on the band gap energy of LiNbO₃ ceramic. X‐ray photoelectron spectroscopy technique confirmed the metallic chemical state of Ag in Ag NPs‐loaded LiNbO₃. Ag NPs‐loaded LiNbO₃ degraded 97% rhodamine‐B model dye from the solution when irradiated for 240 minutes under visible light. The dye degradation follows pseudo‐first‐order kinetic having k‐value (kinetic rate constant) of as 0.013 min⁻¹. The ^•OH (hydroxyl) and (superoxide) radicals were the main active species behind the photocatalytic activity of Ag NPs‐loaded LiNbO₃. Thus, Ag NPs‐loaded LiNbO₃ could be a potential material for degrading organic dyes from water.

中文翻译：

---

表面等离子体共振引发有希望的可见光光催化LiNbO3陶瓷负载的银纳米颗粒

LiNbO ₃陶瓷采用固态反应路线制造。在不使用外部热量和光能的情况下，使用硝酸银和聚乙二醇试剂将银纳米颗粒（NPs）在室温下加载到LiNbO ₃上。X射线衍射显示，在载有Ag的LiNbO ₃样品中，只有LiNbO ₃相，由于载有少量Ag，因此没有与Ag金属有关的峰。X射线能量衍射光谱仪的元素色图确认了Ag金属在LiNbO ₃颗粒上的均匀负载。如在透射电子显微镜下观察到的那样，Ag金属以NP的形式负载。Ag NPs负载的LiNbO ₃由于表面等离振子共振（SPR）现象，可见光对可见光的吸收增强。Ag NPs的负载对LiNbO ₃陶瓷的带隙能量没有影响。X射线光电子能谱技术证实了Ag NPs负载的LiNbO ₃中Ag的金属化学态。当在可见光下照射240分钟时，载有Ag NPs的LiNbO _3会从溶液中降解97％的若丹明B模型染料。染料降解遵循拟一级动力学，其k值（动力学速率常数）为0.013 min ^-1。该^• OH（羟基）和（超氧化物）自由基是负载Ag NPs的LiNbO ₃的光催化活性的主要活性物质。因此，负载有Ag NPs的LiNbO ₃可能是从水中降解有机染料的潜在材料。