Pumice-TiO₂ was synthesized through simple sol-gel method. The successful synthesis of the catalyst was verified by SEM, EDS, XRF, FT-IR and BET techniques. Then, a sonocatalytic process was performed to degrade famotidine in the presence of the synthesized catalyst and under ultrasonic irradiation. The removal efficiency of the sonocatalytic process with pumice‒TiO₂, TiO₂, pumice and sonolysis within 70 min was 71.1%, 33.9%, 31.1% and 8.9%, respectively. The main operational parameters which were examined in this study were catalyst dosage, pH, famotidine concentration and ultrasonic power which were optimized as 1.5 g/L, 5, 20 mg/L and 150 W, respectively. Moreover, the addition of radical scavengers (EDTA, Na₂SO₄ and 1, 4–benzoquinone) and enhancers (H₂O₂ and K₂S₂O₈) which can affect the removal efficiency were investigated. Diverse degradation by-products were identified using GC‒MS analysis. Eventually, the reusability tests confirmed that the synthesized pumice‒TiO₂ catalyst had significant stability after 5 consecutive runs.

通过简单的溶胶-凝胶法合成了浮石-TiO ₂。通过SEM，EDS，XRF，FT-IR和BET技术验证了催化剂的成功合成。然后，在合成催化剂存在下并在超声辐射下，进行声催化过程以降解法莫替丁。浮石‒ TiO ₂，TiO ₂，浮石和声分解在70分钟内对声催化过程的去除率分别为71.1％，33.9％，31​​.1％和8.9％。在这项研究中检查的主要操作参数是催化剂剂量，pH，法莫替丁浓度和超声功率，分别优化为1.5 g / L，5、20 mg / L和150W。此外，添加了自由基清除剂（EDTA，Na ₂ SO ₄和1，4-苯醌）和增强剂（H ₂ O ₂和K ₂ S ₂ O ₈）会影响去除效率。使用GC‒MS分析鉴定了各种降解副产物。最终，可重复使用性测试证实了合成的浮石TiO ₂催化剂在连续运行5次后具有显着的稳定性。