A comparison study was conducted on the performance of the Ag₂CO₃ visible light catalysts synthesized in a surfactant-free microemulsion (SFME), water and water/propan-2-ol mixture, respectively. The XPS spectra show that all the synthesized Ag₂CO₃ products have good purity. The SEM, XRD, BET and DRS characterizations indicate that the Ag₂CO₃ product synthesized in the SFME template has higher crystallinity, more regular morphology, more uniform size, larger specific surface area, and stronger visible light absorption performance, thus having better catalytic photodegradation activity for rhodamine B (RhB), methylene blue (MB) and methyl orange (MO). When the degradation time reaches 45 min, the degradation rate of RhB is as high as 99.11 %. Na₂CO₃ has a good stabilizing effect when its concentration is 0.001 mol L⁻¹. This research is of great significance to expand the application of SFMEs in the synthesis of high-efficiency catalytic materials.

对分别在无表面活性剂微乳液（SFME）、水和水/丙-2-醇混合物中合成的Ag ₂ CO ₃可见光催化剂的性能进行了比较研究。XPS光谱表明，所有合成的Ag ₂ CO ₃产物都具有良好的纯度。SEM、XRD、BET 和 DRS 表征表明 Ag ₂ CO ₃SFME模板合成的产物结晶度更高，形貌更规则，尺寸更均匀，比表面积更大，可见光吸收性能更强，因此对罗丹明B（RhB）、亚甲蓝（MB）和甲基具有更好的催化光降解活性橙色 (MO)。当降解时间达到45 min时，RhB的降解率高达99.11%。Na ₂ CO _{3在其浓度为0.001 mol L} ^-1时具有良好的稳定作用。该研究对于扩大SFMEs在高效催化材料合成中的应用具有重要意义。