School of Chemistry and Environmental Engineering, Wuhan Institute of Technology
State Key Laboratory of New Textile Materials and Advanced Processing Technology,Wuhan Textile University

电化学法降解水中有机污染物具有低碳、高效等特点。 本文采用共沉淀法制备 Mn / 炭黑-泡沫镍电极,通过场发射扫描电镜(FESEM)、X 射线光电子能谱(XPS)对电极进行了表征,考察了外加电压、极板间距、电解质浓度和诺氟沙星初始浓度对其降解效果的影响。 结果表明,Mn /炭黑-泡沫镍电极可促进·OH 的产生,强化电芬顿效果。 钛钌-Mn / 炭黑-泡沫镍电极在外加电压 6 V,极板间距 15 mm,电解质浓度 20 mmol/ L,诺氟沙星初始浓度 10 mg / L 条件下,诺氟沙星去除率可达 83.9%,TOC 去除率 69.2%,能耗为 9.6 kW·h / m3。 对比钛钌-泡沫镍电极,在相同条件下,Mn / 炭黑-泡沫镍电极的诺氟沙星去除率提高了 15.8%,能耗降低了 0.6 kW·h / m3,并且电流效率提高,反应速率明显加快,表明该电极对抗生素类污染物降解具有较好的催化作用。

Electrochemical degradation is a promising method for removing organic pollutants fromwater due to its low carbon footprint and high efficiency. In this study, we prepared Mn / carbon blacknickel foam electrodes using a co - precipitation method and characterized them using FESEM andX-ray photoelectron spectroscopy. We investigated the effects of applied voltage, plate spacing, elec⁃trolyte concentration, and initial norfloxacin concentration on the degradation of organic pollutants. Theresults indicated that Mn / carbon black-nickel foam electrodes exhibited excellent performance in pro⁃moting the generation of hydroxyl radicals (·OH) and enhancing the electro-Fenton effect. At optimalconditions, including an applied voltage of 6 V, plate spacing of 15 mm, electrolyte concentration of 20mmol / L, and initial norfloxacin concentration of 10 mg / L, the norfloxacin removal percentage reached83.9%. Additionally, the total organic carbon (TOC) removal percentage was 69.2%, and the energyconsumption was 9.6 kW·h / m3. Furthermore, when compared to titanium ruthenium -nickel foamelectrodes under the same conditions, the Mn / carbon black-nickel foam electrode exhibited a 15.8%increase in norfloxacin removal rate, a reduction of 0.6 kW·h / m3 in energy consumption, improvedcurrent efficiency, and significantly accelerated reaction rates. Overall, this study demonstrates the ex⁃cellent catalytic effect of the Mn / carbon black-nickel foam electrode on the degradation of antibioticpollutants.

国家自然科学基金资助项目(52170170);武汉工程大学第十四届研究生教育创新基金资助项目(CX2022434)

李阳, 陈琳, 黄心睿, 等. Mn/ 炭黑-泡沫镍电极电化学降解诺氟沙星[J]. 能源环境保护, 2024, 38(1):134-142.

LI Yang, CHEN Lin, HUANG Xinrui, et al. Electrochemical treatment of norfloxacin with Mn/ carbon black-nickel foam electrodes[J]. Energy Environmental Protection, 2024, 38(1): 134-142.