In this study, the Heterogeneous Sono-photocatalytic Process was used to degrade Reactive Yellow 84 (RY 84) dye dissolved in water over iron containing TiO₂ and TiO₂-Ce catalysts. The catalysts were prepared by sol-gel and incipient wetness impregnation methods and characterized using XRD, SEM, Nitrogen adsorption, UV-Vis DRS and ICP-AES measurements. The TiO₂ catalyst containing 1% (in weight) iron, prepared by incipient wetness impregnation technique and calcined at 300 °C (1%Fe/TiO₂–300 °C (IW)) was found to be the most effective catalyst. Parametric study was carried out over this catalyst and COD removal of 55% and TOC removal of 38% were achieved while the decolorization efficiency reached 100% after 45 min of reaction at the optimum conditions of, (25 mg/L of RY 84 solution, 0.5 g/L of catalyst, 5 mM of H₂O₂, a temperature of 25 °C, pH = 6 and US at a power of 40 W). Decolorization of RY 84 obeyed the first order kinetics with an activation energy of 20.7 kJ/mol. Sonication increased the decolorization efficiency of the heterogeneous Fenton process (UV + Catalyst+H₂O₂) from 92.7% to 97.5% after 30 min of reaction, with the COD and TOC reductions increasing from 87% to 90% and 48% to 57% after 120 min of reaction, respectively. US also decreased the toxicity of the RY 84 dye. The results obtained from this study show that, iron containing TiO₂ and TiO₂-Ce catalysts could be efficiently used in the hybrid process of ultrasound assisted heterogeneous photocatalytic oxidation in a wide range of experimental conditions.

在这项研究中，非均相声光催化工艺用于降解含铁的TiO ₂和TiO ₂ -Ce催化剂上溶解在水中的活性黄84（RY 84）染料。通过溶胶-凝胶和初湿浸渍法制备催化剂，并使用XRD，SEM，氮吸附，UV-Vis DRS和ICP-AES进行表征。通过初湿浸渍技术制备并在300°C下煅烧的含铁量为1％（重量）的TiO ₂催化剂（1％Fe / TiO ₂已发现–300°C（IW）是最有效的催化剂。在此催化剂上进行了参数研究，在最佳条件下（25 mg / L RY 84溶液，在最佳条件下）反应45分钟后，脱色效率达到了100％，脱色率达到了55％，TOC去除了38％。 0.5 g / L的催化剂，5 mM的H ₂ O ₂，温度为25°C，pH = 6且功率为40 W的US）。RY 84的脱色遵循一级动力学，活化能为20.7 kJ / mol。超声处理提高了非均相Fenton工艺（UV +催化剂+ H ₂ O _2）的脱色效率反应30分钟后）从92.7％增加到97.5％，反应120分钟后COD和TOC减少分别从87％增加到90％和48％增加到57％。US还降低了RY 84染料的毒性。从这项研究获得的结果表明，在广泛的实验条件下，含铁的TiO ₂和TiO ₂ -Ce催化剂可以有效地用于超声辅助多相光催化氧化的混合过程。