In this work, silver carbonate nanoparticles and BiOI nanosheets have been prepared separately and binary Ag2CO3/BiOI composite are synthesized via a facile solvo thermal method. The as-prepared materials have been well characterized using techniques covering X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), High-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), Photoluminescence (PL) emission spectroscopy. The photocatalytic activity of the as-synthesized materials has been evaluated for degrading various model pollutants (methyl orange, phenol and p-nitroaniline). It has been found that the incorporation of co-catalyst BiOI could promote the catalytic activity of Ag2CO3 and suppress the serious photocorrosion of Ag2CO3. Thus the Ag2CO3/BiOI composite showed excellent catalytic recycling stability. Moreover, the underlying mechanism has been investigated through radical trapping experiments. The results demonstrate that photoinduced holes are the main active species. The improvement in activity of Ag2CO3/BiOI could be attributed to the charge transfer between the heterojunction. Also, its good stability and reusability establish its promising potential for catalytic applications.

中文翻译：

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具有增强光催化性能的碳酸银纳米颗粒和碘氧化铋纳米片的偶联体系

在这项工作中，碳酸银纳米颗粒和 BiOI 纳米片已分别制备，并通过简便的溶剂热法合成了二元 Ag2CO3/BiOI 复合材料。所制备的材料已使用 X 射线衍射 (XRD)、能量色散 X 射线光谱 (EDX)、透射电子显微镜 (TEM)、高分辨率透射电子显微镜 (HRTEM)、紫外-可见(UV-vis) 漫反射光谱、X 射线光电子能谱 (XPS)、光致发光 (PL) 发射光谱。已对合成材料的光催化活性进行了降解各种模型污染物（甲基橙、苯酚和对硝基苯胺）的评估。已经发现助催化剂BiOI的掺入可以提高Ag2CO3的催化活性并抑制Ag2CO3的严重光腐蚀。因此，Ag2CO3/BiOI 复合材料表现出优异的催化循环稳定性。此外，通过自由基捕获实验研究了潜在的机制。结果表明光致空穴是主要的活性物质。Ag2CO3/BiOI 活性的提高可归因于异质结之间的电荷转移。此外，其良好的稳定性和可重复使用性为其催化应用奠定了良好的潜力。结果表明光致空穴是主要的活性物质。Ag2CO3/BiOI 活性的提高可归因于异质结之间的电荷转移。此外，其良好的稳定性和可重复使用性为其催化应用奠定了良好的潜力。结果表明光致空穴是主要的活性物质。Ag2CO3/BiOI 活性的提高可归因于异质结之间的电荷转移。此外，其良好的稳定性和可重复使用性为其催化应用奠定了良好的潜力。