Novel and efficient Z-scheme Ag₂CO₃/Ag/WO₃ with excellent visible-light-driven photocatalytic performance was fabricated using a facile deposition and photochemical reduction process. Surface, morphological, and structural properties of the resulting materials were characterized using N₂ sorption–desorption and Brunauer–Emmett–Teller (BET) surface area measurements, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV-vis and photoluminescence spectroscopy. The photocatalytic performances of the Ag₂CO₃/Ag/WO₃ composites were evaluated by the degradation of rhodamine B (RhB), methyl orange (MO), ciprofloxacin (CIP), and tetracycline hydrochloride (TC) under visible light irradiation. The results demonstrate that the novel Z-scheme Ag₂CO₃/Ag/WO₃ composites exhibit higher photocatalytic activity than pure Ag₂CO₃ rods and WO₃ nanoparticles. The enhanced photocatalytic activity of Ag₂CO₃/Ag/WO₃ can be ascribed to the extended absorption in the visible light region caused by a surface plasmon resonance (SPR) effect, effective separation of photogenerated charges, and the formation of a Z-scheme system. In addition, the photocatalyst exhibits high stability and reusability. This work could offer a new insight into the design and fabrication of advanced materials with Z-scheme structures for photocatalytic applications for organic pollutants removal from wastewater.

中文翻译：

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Z方案Ag ₂ CO ₃ / Ag / WO ₃光催化剂的高效可见光诱导的光活性，用于有机污染物的降解

利用一种简便的沉积和光化学还原工艺，制备了具有优异的可见光驱动的光催化性能的新型高效Z-方案Ag ₂ CO ₃ / Ag / WO ₃。使用N ₂吸附-解吸和Brunauer-Emmett-Teller（BET）表面积测量，扫描电子显微镜，透射电子显微镜，X射线衍射，X射线光电子能谱来表征所得材料的表面，形态和结构特性，以及紫外可见光谱和光致发光光谱。Ag ₂ CO ₃ / Ag / WO ₃的光催化性能在可见光照射下，通过若丹明B（RhB），甲基橙（MO），环丙沙星（CIP）和盐酸四环素（TC）的降解来评估复合材料。结果表明，新型的Z-方案Ag ₂ CO ₃ / Ag / WO ₃复合材料比纯Ag ₂ CO ₃棒和WO ₃纳米颗粒具有更高的光催化活性。Ag ₂ CO ₃ / Ag / WO ₃的增强的光催化活性可以归因于表面等离振子共振（SPR）效应，有效分离光生电荷和形成Z方案系统导致的可见光区域的吸收扩展。另外，光催化剂显示出高稳定性和可重复使用性。这项工作可以为具有Z方案结构的先进材料的设计和制造提供新的见解，这些材料可用于光催化应用中的废水中有机污染物的去除。