Abstract Herein, novel Ag2C2O4/Ag3PO4 heterostructured nanocomposites were designed through a simple a co-precipitation method, employing in the photo-degradation of binary mixture (Amido black 10B) AB and (Eosin B) EB under the natural solar light. Their composite properties were described using various analysis such as FE-SEM, EDS, XRD, FTIR, PL and UV–Vis. The Ag2C2O4/Ag3PO4 nanocomposite exhibited highly improved photocatalytic activities for binary mixture AB and EB dyes degradation, in comparison to the single Ag2C2O4 and Ag3PO4. DRS analysis of Ag2C2O4/Ag3PO4 indicates the extension of light absorption in the visible region while PL spectra of these photocatalyst confirm the efficient separation of charge carriers. The correlation among response and factors such as irradiation time, nanocomposite mass, initial AB and EB dyes concentrations were optimized by a central composite design (CCD) combined with response surface methodology (RSM). The enhanced photocatalytic activity of the Ag2C2O4/Ag3PO4 was attributed to the enhanced number of electron-hole pairs generated by solar light and the effective separation of the charge carriers owing to the formation of n-n heterojunction Ag2C2O4/Ag3PO4.

中文翻译：

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Ag2C2O4/Ag3PO4复合材料作为太阳能光驱动降解染料污染物的高效光催化剂

摘要 在此，通过简单的共沉淀方法设计了新型 Ag2C2O4/Ag3PO4 异质结构纳米复合材料，将其用于二元混合物 (Amido black 10B) AB 和 (Eosin B) EB 在自然太阳光下的光降解。使用各种分析（例如 FE-SEM、EDS、XRD、FTIR、PL 和 UV-Vis）描述了它们的复合性能。与单一的 Ag2C2O4 和 Ag3PO4 相比，Ag2C2O4/Ag3PO4 纳米复合材料对二元混合物 AB 和 EB 染料的降解表现出高度改进的光催化活性。Ag2C2O4/Ag3PO4 的 DRS 分析表明可见光区域的光吸收扩展，而这些光催化剂的 PL 光谱证实了电荷载流子的有效分离。响应与辐照时间、纳米复合材料质量、通过中心复合设计 (CCD) 结合响应面方法 (RSM) 优化了初始 AB 和 EB 染料浓度。Ag2C2O4/Ag3PO4 光催化活性的增强归因于太阳光产生的电子-空穴对数量的增加以及由于形成 nn 异质结 Ag2C2O4/Ag3PO4 导致的电荷载流子的有效分离。