Nanopowders of Eu₂Ce₂O₇ were synthesized via solid-state reactions between Eu₂O₃ and (NH₄)₂Ce(NO₃)₆ raw materials at stoichiometric 1:1 Eu/Ce molar ratio at 800 °C (S₁), 900 °C (S₂), 1000 °C (S₃) for 8 h and 1000 °C for 10 h (S₄). The synthesized materials were characterized by powder X-ray diffraction (PXRD) technique. Structural analyses were performed by FullProf program employing profile matching with constant scale factors. The results showed that the patterns had a main Eu₂Ce₂O₇ structure with a space group of \({\text{Fm}}\overline{3}{\text{m}}\). FESEM images showed that the synthesized Eu₂Ce₂O₇ particles had mono-shaped sphere morphologies. Ultraviolet–visible spectra showed that the nanostructured Eu₂Ce₂O₇ powders possessed strong light absorption properties in the ultraviolet–visible light region. The direct optical band gap energies were 3.08 eV (S₁), 3.05 eV (S₂), 2.91 eV (S₃) and 2.74 eV (S₄). Photocatalytic performance of the synthesized nanomaterials was investigated for the degradation of pollutant Malachite Green (4-{[4-(dimethylamino)phenyl](phenyl)methylidene}-N'N-dimethylcyclohexa-25-dien-1-iminium chloride) (MG) in aqueous solution under solar light condition. The optimum conditions were modeled and obtained by design expert software for S₁ which were 0.4 ml H₂O₂, 20 mg catalyst and 60 min for the removal of 60 ml of 50 ppm MG solutions. The degradation yield in these conditions was 93% for (S₁).

通过Eu ₂ O ₃与（NH ₄）₂ Ce（NO ₃）₆原料在800°C（S的化学计量比为1：1 ）之间的固相反应合成了Eu ₂ Ce ₂ O ₇纳米粉体。₁），900°C（S ₂），1000°C（S ₃）8小时和1000°C 10小时（S ₄）。通过粉末X射线衍射（PXRD）技术对合成的材料进行了表征。结构分析由FullProf进行程序使用轮廓匹配且比例因子恒定的程序。结果表明，这些图案具有主要的Eu ₂ Ce ₂ O ₇结构，其空间群为\（{\ text {Fm}} \ overline {3} {\ text {m}} \\}。FESEM图像显示，合成的Eu ₂ Ce ₂ O ₇颗粒具有单形球形形态。紫外可见光谱表明，纳米结构的Eu ₂ Ce ₂ O ₇粉末在紫外可见光区域具有很强的吸光性能。直接光学带隙能量为3.08 eV（S ₁），3.05 eV（S ₂），2.91 eV（S₃）和2.74 eV（S ₄）。研究了合成的纳米材料的光催化性能，用于降解孔雀石绿（4-{[4-（二甲基氨基）苯基]（苯基）亚甲基} -N'N-二甲基环己-25-二烯-1-亚胺氯化铵）（MG ）在阳光下的水溶液中。的最佳条件进行了建模，并通过设计专家软件，用于S取得₁，其分别为0.4毫升水₂ ö ₂，20毫克催化剂和60分钟以除去60毫升50ppm的MG的解决方案。在这些条件下，（S ₁）的降解率为93％。