• 关键词：α-FeOOH  铜掺杂  可见光  异相类Fenton  环丙沙星

• 基金项目：国家自然科学基金（No.51678255，51378227）

• 许俊鸽
• 福州大学土木工程学院, 福州 351020

• 李云琴
• 福州大学土木工程学院, 福州 351020

• 陈钰林
• 福州大学土木工程学院, 福州 351020

• 沈春花
• 华侨大学土木工程学院, 厦门 361021

• 苑宝玲
• 1. 福州大学土木工程学院, 福州 351020;2. 华侨大学土木工程学院, 厦门 361021

• 摘要：采用一步回流法合成了花状铜掺杂α-FeOOH纳米材料（α-（Fe，Cu）OOH），采用XRD、SEM、UV-Vis DRS和XPS等手段对其进行了分析表征，并研究了其在可见光下催化过氧化氢去除环丙沙星（CIP）的性能.结果表明：Cu掺杂引起了α-FeOOH表面能的变化，光吸收边在可见光区域向长波长方向移动；Cu掺杂提高了α-FeOOH活性和稳定性，当α-（Fe，Cu）OOH投加量为0.60 g·L^-1，H₂O₂浓度为0.15 mol·L^-1，反应进行180 min时，CIP（30 mg·L^-1）被全部去除；异相类Fenton反应过程中羟基自由基（·OH）是重要的氧化活性物种，Cu⁺/Cu²⁺的存在不但影响·OH的生成速率，而且影响·OH的生成量.

• Abstract：Cu-doped α-FeOOH nanoflowers (α-(Fe,Cu)OOH) were successfully prepared with a facile reflux method. The as-obtained products were characterized by using XRD,SEM,UV-Vis DRS and XPS,and their catalytic performances were evaluated by the degradation of ciprofloxacin with H₂O₂ under visible light (λ>420 nm) irradiation. The results show that the incorporation of Cu ions into α-FeOOH unit-cell led to the change of surface energy and the light absorption edge in visible light region shifted towards longer wavelength. The Cu-doping improved the activity and stability of α-FeOOH,and the ciprofloxacin (30 mg·L^-1) was completely degraded in 180 min when the concentration of H₂O₂ was 0.15 mol·L^-1 and the dosage of α-(Fe,Cu)OOH was 0.60 g·L^-1. The hydroxyl radical (·OH) was important reactive oxygen species during the heterogeneous Fenton-like reaction,and the presence of Cu⁺/Cu²⁺ not only affected the generation rate of ·OH but also affected the total yield of ·OH.

• Key words：α-FeOOH  Cu-doped  visible light  heterogeneous Fenton-like  ciprofloxacin

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