Abstract Herein, a Z-scheme 2D/2D WO3@CoFe-LDH nanocomposite was synthesized and characterized by XRD, FT-IR, SEM, TEM, EDX, X-ray dot mapping, BET, PL, DRS, and XPS analysis. The integration of the so-synthesized WO3@CoFe-LDH nanocomposite, ultrasonic, and ozone inferred the existence of a synergy factor of 2.26 > 1 and 2.17 > 1 for the removal of Acid blue 9 and Acid Orange 7, respectively. Catalyst dosage of 1 g/L, the solution pH of 8, the mixture dye concentration of 50 mg/L, and the ozone flow rate of 3 L/h were determined to be the optimum value for the extreme degradation of the dye mixtures under 100 min of the sonocatalytic ozonation process. Additionally, the reusability experiments showed that the DE was above 80% after 5 times reuse of WO3@CoFe-LDH nanocomposite implying its retained properties during the sonocatalytic ozonation process. The contributed active radicals in the degradation of the dye mixtures were profoundly studied and reported to be mainly •OH and O2•−. The so-generated intermediates were recognized using GCMS analysis and a postulated degradation mechanism was reported for each of the target pollutants in the presence of WO3@CoFe-LDH nanocomposite. The toxicity tests proved a nontoxic media after the sonocatalytic ozonation of the mixture dyes due to the successive attack of the reactive oxygen species to the intermediates.

中文翻译：

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用于通过声催化臭氧化工艺同步降解混合偶氮染料的高性能 Z 型 2D/2D WO3@CoFe-LDH 纳米复合材料的合成

摘要 本文合成了一种 Z 型 2D/2D WO3@CoFe-LDH 纳米复合材料，并通过 XRD、FT-IR、SEM、TEM、EDX、X 射线点阵图、BET、PL、DRS 和 XPS 分析对其进行了表征。如此合成的 WO3@CoFe-LDH 纳米复合材料、超声波和臭氧的集成推断存在协同因子 2.26 > 1 和 2.17 > 1，分别用于去除酸性蓝 9 和酸性橙 7。确定催化剂用量为 1 g/L、溶液 pH 值为 8、混合染料浓度为 50 mg/L、臭氧流速为 3 L/h 是染料混合物在100 分钟的声催化臭氧化过程。此外，重复使用性实验表明，WO3@CoFe-LDH 纳米复合材料重复使用 5 次后，DE 大于 80%，这意味着其在声催化臭氧化过程中保留了特性。深入研究了染料混合物降解中贡献的活性自由基，据报道主要是•OH 和O2•-。使用 GCMS 分析识别如此生成的中间体，并报告了在 WO3@CoFe-LDH 纳米复合材料存在下每种目标污染物的假定降解机制。由于活性氧对中间体的连续攻击，在混合染料的声催化臭氧化之后，毒性测试证明了一种无毒介质。使用 GCMS 分析识别如此生成的中间体，并报告了在 WO3@CoFe-LDH 纳米复合材料存在下每种目标污染物的假定降解机制。由于活性氧物质对中间体的连续攻击，在混合染料的声催化臭氧化之后，毒性测试证明是一种无毒介质。使用 GCMS 分析识别如此生成的中间体，并报告了在 WO3@CoFe-LDH 纳米复合材料存在下每种目标污染物的假定降解机制。由于活性氧物质对中间体的连续攻击，在混合染料的声催化臭氧化之后，毒性测试证明是一种无毒介质。