Iron-copper oxide impregnated NaOH-activated biochar (FeCu/ABC) was successfully fabricated through simple pyrolysis of activated biochar, followed by the impregnation method. The catalytic activity of the bimetallic catalyst was investigated for ciprofloxacin (CIP) degradation through a heterogeneous photo-electro-Fenton process at natural pH. The characterization analyses verified the structural suitability of as-synthesized FeCu/ABC to act as a catalyst for treating CIP. The effects of operating parameters such as Cu/Fe mass ratio, initial pH, catalyst dosage, electrical current and initial concentration of CIP were carefully studied. Complete removal of CIP concentrations of up to 45 mg/L was obtained after 2 h of reaction at Cu/Fe mass ratio of 1:1, pH 5.8, catalyst dosage of 1 g/L, and electrical current of 400 mA. CIP decay followed pseudo-first-order reaction kinetics. The synthesized heterogeneous catalyst exhibited a remarkable catalytic activity at natural pH (92 % mineralization of CIP after 8 h under the optimum conditions). The prepared catalyst possessed great stability and structural integrity for 5 consecutive runs. Furthermore, from a practical point of view, the catalyst exhibited an acceptable performance by oxidizing CIP dissolved in various water matrices such as tap water, river water, and a real sample of wastewater. The possible CIP degradation pathways were also proposed based on the identification of different oxidation by-products.

通过对活化生物炭进行简单的热解，然后采用浸渍法，成功地制备了铁铜氧化物浸渍的NaOH活化生物炭（FeCu / ABC）。通过在自然pH下采用非均相光电芬顿法研究了双金属催化剂对环丙沙星（CIP）降解的催化活性。表征分析证实了合成后的FeCu / ABC的结构适合用作处理CIP的催化剂。仔细研究了铜/铁质量比，初始pH，催化剂用量，电流和CIP初始浓度等操作参数的影响。在Cu / Fe质量比为1：1，pH 5.8，催化剂剂量为1 g / L，电流为400 mA的条件下反应2小时后，可以完全去除高达45 mg / L的CIP浓度。CIP衰减遵循伪一级反应动力学。合成的非均相催化剂在天然pH值下具有显着的催化活性（在最佳条件下8 h后CIP的矿化率为92％）。所制备的催化剂连续5次具有很高的稳定性和结构完整性。此外，从实用的角度看，该催化剂通过氧化溶解在自来水，河水和废水的真实样品等各种水基质中的CIP而表现出可接受的性能。基于不同氧化副产物的鉴定，还提出了可能的CIP降解途径。所制备的催化剂连续5次具有很高的稳定性和结构完整性。此外，从实用的角度看，该催化剂通过氧化溶解在自来水，河水和废水的真实样品等各种水基质中的CIP而表现出可接受的性能。基于不同氧化副产物的鉴定，还提出了可能的CIP降解途径。所制备的催化剂连续5次具有很高的稳定性和结构完整性。此外，从实用的角度看，该催化剂通过氧化溶解在自来水，河水和废水的真实样品等各种水基质中的CIP而表现出可接受的性能。基于不同氧化副产物的鉴定，还提出了可能的CIP降解途径。