Metal oxychlorides of Fe, Cu, Bi and Zn were prepared and tested in heterogeneous Fenton degradation of 20 ppm of 2-Nitrophenol (2-NP) in the presence of ultrasonic (US, 20 kHz), ultraviolet (UV, 6 W, λ = 254 nm), and US/UV coupled irradiations. The different experimental conditions including the catalysts dosages, hydrogen peroxide concentration, pH value, temperature, pollutant concentration and irradiation time were optimized and the reusability of the tested metal oxychlorides was investigated as well. The capability of 2-NP degradation follows the order US/UV > UV > US. The rate constant of degradation using sonophotocatalytic system was even higher than the sum of rates of individual systems due to its synergistic performance. Times of 30, 40, 50 and 50 min were respectively needed for Fe, Cu, Bi and Zn oxychlorides to accomplish complete degradation under the experimental conditions of 0.1 gL⁻¹ solid, 5 mM H₂O₂, pH 7 and 25 °C. The rate constant of degradation followed the same order of mentioned metals with values of 0.15, 0.0871, 0.0964, 0.0806, and 0.0738 min⁻¹ for Fe, Cu, Bi and Zn oxychlorides, respectively. The mechanism proposed considers a major role of produced hydroxyl radicals while the difference in band gap energy was emphasized in case of Bi and Zn oxychlorides.

制备了Fe，Cu，Bi和Zn的金属氧氯化物，并在超声波（US，20 kHz），紫外线（UV，6 W，λ）存在下，对20 ppm的2-硝基苯酚（2-NP）进行非均相Fenton降解测试= 254 nm），以及US / UV耦合辐射。优化了不同的实验条件，包括催化剂用量，过氧化氢浓度，pH值，温度，污染物浓度和辐照时间，并研究了所测试的金属氯氧化物的可重复使用性。2-NP降解的能力遵循US / UV> UV> US的顺序。由于其协同作用，使用声光催化体系的降解速率常数甚至高于各个体系的速率之和。Fe，Cu，Fe，Cu分别需要30、40、50和50分钟的时间^-1固体，5 mM H ₂ O ₂，pH 7和25°C。降解的速率常数遵循上述金属的相同顺序，对于Fe，Cu，Bi和Zn氯氧化物，其降解速率常数分别为0.15、0.0871、0.0964、0.0806和0.0738 min ^-1。所提出的机理考虑了产生的羟基自由基的主要作用，而在双氯氧化锌和氯氧化锌的情况下，强调了带隙能量的差异。