Experimentally Designed Natural Light Induced Photocatalytic Performance of Nanostructured Eu2Ce2O7 Synthesized by a Facile Solid State Method in Removal of Environmental Pollutant Malachite Green (MG)
Nanopowders of Eu2Ce2O7 were synthesized via solid-state reactions between Eu2O3 and (NH4)(2)Ce(NO3)(6) raw materials at stoichiometric 1:1 Eu/Ce molar ratio at 800 degrees C (S-1), 900 degrees C (S-2), 1000 degrees C (S-3) for 8 h and 1000 degrees C for 10 h (S-4). The synthesized materials were characterized by powder X-ray diffraction (PXRD) technique. Structural analyses were performed byFullProfprogram employing profile matching with constant scale factors. The results showed that the patterns had a main Eu(2)Ce(2)O(7)structure with a space group of Fm (3) over barm. 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 (S-1), 3.05 eV (S-2), 2.91 eV (S-3) and 2.74 eV (S-4). 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 S(1)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 (S-1).
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机译:摘要Eu2Ce2O7被合成通过固态反应Eu2O3之间公元(NH4)(2)(三)(6)原料化学计量1:1欧盟/ Ce摩尔比率为800度(s - 1), 900度C (2), 1000度(s 3) 8 h和1000摄氏度10h(4)。以粉末x射线衍射(PXRD)技术。byFullProfprogram使用配置文件匹配定规模的因素。欧盟模式主要有(2)Ce (2) O(7)结构空间群的调频(3)酵母。合成Eu2Ce2O7画面显示粒子mono-shaped球体形态。紫外-可见光谱表明,纳米Eu2Ce2O7粉末具有强劲光吸收特性紫外灯。光学带隙能量3.08 eV (s - 1),3.05 eV (s), 2.91 eV (s 3)和2.74 eV(4)。合成的光催化性能纳米材料的研究污染物的降解孔雀石绿
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