Nickel phosphides Ni_xP_y are a promising family of binary compounds that have shown much promise in various fields of technology, including energy storage, light absorption and heterogeneous catalysis in the reactions of biomass hydrogenation. The performance of Ni_xP_y-containing materials depends greatly on their morphology and phase composition and, in turn, on the synthesis technique. In this work, we have employed the electroplating approach to synthesize a Ni-P coating, which was treated with nitric acid in order to develop its surface area and enrich it with phosphorus. We have employed scanning electron microscopy, X-ray diffraction and ³¹P nuclear magnetic resonance techniques to characterize the particles separated from the coating with ultrasound for the convenience of the study. According to experimental data, the obtained powder contained a mixture of Ni₃P and phosphorus oxides, which transformed into nickel phosphide phases richer with phosphorus, such as Ni₅P₂ and Ni₁₂P₅, after treatment at elevated temperatures. Thus, we have demonstrated that electroplating followed by acid treatment is a feasible approach for the synthesis of Ni-P coatings with increased surface area and variable phase composition.

中文翻译：

---

表面积增加的电化学沉积Ni-P涂层的合成与成分研究

磷化镍 Ni _x P _y是一个很有前途的二元化合物家族，在各种技术领域都显示出很大的前景，包括生物质加氢反应中的能量存储、光吸收和多相催化。含Ni _x P _y材料的性能在很大程度上取决于它们的形态和相组成，进而取决于合成技术。在这项工作中，我们采用电镀方法合成了 Ni-P 涂层，该涂层用硝酸处理以扩大其表面积并使其富含磷。我们采用了扫描电子显微镜、X 射线衍射和³¹为方便研究，P 核磁共振技术用超声波表征从涂层分离的颗粒。根据实验数据，得到的粉末含有Ni ₃ P 和磷氧化物的混合物，在高温处理后转变为富含磷的磷化镍相，如Ni ₅ P ₂和Ni ₁₂ P ₅。因此，我们已经证明电镀后酸处理是合成具有增加的表面积和可变相组成的 Ni-P 涂层的可行方法。