Rare earth based mixed metal oxide nanohybrids have become unique and tend to show impressive performance in different fields of applications such as photocatalytic, and biological, and electrochemical systems. NiO-CGYO [nickel based yttria and gadolinia co-doped ceria, fabricated composition with a formula NiO-Ce_0.9Gd_0.1O_2−δ –Ce_0.9Y_0.1O_2−δ ] nanocomposite was prepared by the wet-chemical method by rare earth-based metal originators and examined for use in three applications such as electrochemical, photocatalytic and biological activity. The formation of fluorite cubic crystal structure with no secondary phase (XRD) was observed and metal-oxygen bonds (FT-IR) were revealed. SEM and EDAX analysis revealed chemically pure almost spherical nanocomposite particles with a size of 40–70 nm. The electrochemical behaviour assessed from room temperature up to 600 C at 1.3 V in the frequency assortment from 42 Hz to 5 kHz showed maximum values of conductivity at elevated temperatures (500C–600C). The photocatalytic activity of the prepared NiO-CGYO nanocomposite resulted in 90% methylene blue (MB) dye degradation after 120 min. NiO-CGYO also demonstrated admirable antibacterial activity against foodborne pathogens comparable with that of the standard antibiotic (Streptomycin).

稀土基混合金属氧化物纳米杂化物已经变得独一无二，并且在光催化，生物和电化学系统等不同应用领域中往往表现出令人印象深刻的性能。的NiO-CGYO [镍氧化钇和氧化钆共掺杂的氧化铈，具有式的NiO铈制成的组合物_0.9的Gd _0.1 ø _{2- δ} -Ce _0.9 ý _0.1 ø _{2- δ} 纳米复合材料是由稀土基金属引发剂通过湿化学方法制备的，并被检验用于三种应用，如电化学，光催化和生物活性。观察到没有第二相（XRD）的萤石立方晶体结构的形成，并且揭示了金属-氧键（FT-IR）。SEM和EDAX分析显示化学纯的几乎球形的纳米复合颗粒，尺寸为40-70 nm。在42 V至5 kHz的频率范围内，在1.3 V的室温至600 C的温度下评估的电化学行为显示出在升高的温度（500C–600C）下电导率的最大值。制备的NiO-CGYO纳米复合材料的光催化活性导致120分钟后90％的亚甲基蓝（MB）染料降解。