Qiu Shan, Xu Shanwen, Li Guangming, Yang Jixian
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150006, China.
State Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150006, China.
Materials (Basel). 2016 Jun 8;9(6):457. doi: 10.3390/ma9060457.
The synergistic effect of ultrasound, the heterogeneous Fenton reaction and photocatalysis was studied using a nickel foam (NF)-supporting TiO₂ system and rhodamine B (RhB) as a target. The NF-supporting TiO₂ system was prepared by depositing TiO₂ on the skeleton of NF repeatedly and then calcining it. To optimize the conditions and parameters, the catalytic activity was tested in four systems (ultrasound alone (US), nickel foam (NF), US/NF and NF/US/H₂O₂). The optimal conditions were fixed at 0.1 g/mL NF, initial 5.00 mg/L RhB, 300 W ultrasonic power, pH = 3 and 5.00 mg/L H₂O₂. The effects of the dissolution of nickel from NF and quenching of the Fenton reaction were studied on degradation efficiency. When the heterogeneous Fenton reaction is combined with TiO₂-photocatalysis, the pollutant removal efficiency is enhanced significantly. Through this synergistic effect, 22% and 80% acetochlor was degraded within 10 min and 80 min, respectively.
以泡沫镍（NF）负载TiO₂体系和罗丹明B（RhB）为研究对象，研究了超声、非均相芬顿反应和光催化的协同效应。通过在NF骨架上反复沉积TiO₂然后煅烧来制备NF负载TiO₂体系。为了优化条件和参数，在四个体系（单独超声（US）、泡沫镍（NF）、US/NF和NF/US/H₂O₂）中测试了催化活性。最佳条件确定为0.1 g/mL NF、初始5.00 mg/L RhB、300 W超声功率、pH = 3和5.00 mg/L H₂O₂。研究了NF中镍的溶解和芬顿反应的猝灭对降解效率的影响。当非均相芬顿反应与TiO₂光催化相结合时，污染物去除效率显著提高。通过这种协同效应，乙草胺在10分钟和80分钟内分别有22%和80%被降解。
