| CuNiFe LDHs/BiO2-x异质结可见光活化过硫酸盐降解环丙沙星 |
| 摘要点击 2271 全文点击 764 投稿时间：2022-10-13 修订日期：2022-12-25 |
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| 中文关键词 CuNiFe LDHs/BiO2-x 异质结 光催化 过硫酸盐 高级氧化 环丙沙星(CIP) |
| 英文关键词 CuNiFe LDHs/BiO2-x heterojunction photocatalysis peroxymonosulfate advanced oxidation process ciprofloxacin(CIP) |
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| 中文摘要 |
| 采用水热法成功合成了CuNiFe LDHs/BiO2-x复合光催化剂，并在可见光照射下用于活化过硫酸盐（PMS）降解环丙沙星（CIP）.由于光催化和PMS活化的协同作用，CIP的去除率高达88.3%.利用XRD、FT-IR、SEM、XPS和UV-Vis DRS等方法对制备的光催化剂进行了表征.确定了CuNiFe LDHs的最佳负载量，并考察了PMS用量、初始pH值和无机阴离子（Cl-、CO32-和NO3-）对降解的影响.电子顺磁共振和自由基捕获实验表明·OH和h+是CIP降解的主要活性物种，并提出了该体系可能的降解机制. |
| 英文摘要 |
| Herein, a CuNiFe LDHs/BiO2-x composite photocatalyst was successfully synthesized using a hydrothermal method and applied to activate peroxymonosulfate to degrade ciprofloxacin under visible light irradiation. Owing to the synergistic effect of photocatalysis and PMS activation, a high removal efficiency of CIP up to 88.3% was achieved. The prepared photocatalysts were characterized using XRD, FT-IR, SEM, XPS, UV-Vis DRS, and other methods. The optimal loading amount of CuNiFe LDHs was determined, and the effects of PMS dosage, initial pH value, and inorganic anions (Cl-, CO32-, and NO3-) on the degradation were investigated. Electron paramagnetic resonance and free radical trapping experiments demonstrated that·OH and h+ were the main active species for degrading CIP, and the possible degradation mechanism of the system was proposed. |
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