Bi₂Sn₂O₇-C₃N₄/Y nanophotocatalyst with various ratios of zeolite and high activity under simulated solar light irradiation were successfully synthesized using ultrasound-assisted dispersion method. The effect of different amounts of zeolite (10, 20 and 30 wt.%) on the photocatalytic degradation of antibiotic tetracycline was investigated. The as-prepared nanophotocatalysts were characterized by XRD, FESEM, EDX, BET, FTIR, DRS and pH_pzc techniques. The degradation results demonstrated that, Bi₂Sn₂O₇-C₃N₄/Y(10) nanophotocatalyst with a degradation efficiency of about 80.4% is an optimum sample. This result can be attributed to the zeolite as a support that prevented the accumulation of Bi₂Sn₂O₇-C₃N₄ active phase and increased access to active sites. Furthermore, it enhanced the adsorption capacity of tetracycline on the photocatalyst surface; that it is beneficial for tetracycline photocatalytic oxidation. Also the results of the DRS analysis indicated that the sharp absorption edge for optimum sample Bi₂Sn₂O₇-C₃N₄/Y at about 480 nm and was active in the visible light range. Eventually, different operational parameters such as photocatalyst loading, concentrations of pollutant and pH solution were investigated. In addition, the degradation mechanism was suggested for TC removal.

利用超声辅助分散法成功地合成了各种比例的沸石和高活性的Bi ₂ Sn ₂ O ₇ -C ₃ N ₄ / Y纳米光催化剂。研究了不同量的沸石（10、20和30 wt。％）对抗生素四环素的光催化降解的影响。所制备的纳米光催化剂通过XRD，FESEM，EDX，BET，FTIR，DRS和pH _pzc技术进行了表征。降解结果表明，Bi ₂ Sn ₂ O ₇ -C ₃ N ₄降解效率约为80.4％的/ Y（10）纳米光催化剂是最佳样品。该结果可以归因于作为载体的沸石，其阻止了Bi ₂ Sn ₂ O ₇ -C ₃ N ₄活性相的积累和增加了对活性位点的接近。此外，它增强了四环素在光催化剂表面上的吸附能力；对四环素光催化氧化是有益的。DRS分析的结果还表明，最佳样品Bi ₂ Sn ₂ O ₇ -C ₃ N _4的吸收锋利/ Y在约480nm处，并且在可见光范围内是有活性的。最终，研究了不同的操作参数，例如光催化剂的负载量，污染物的浓度和pH溶液。此外，有人提出了降解机理，以消除TC。