| 裴欢,毛飞,司友斌.纳米铁氧化物催化类Fenton反应降解抗生素磺胺[J].农业环境科学学报,2015,34(7):1356-1362. |
| 纳米铁氧化物催化类Fenton反应降解抗生素磺胺 |
| Degradation of Antibiotic Sulfanilamide in Aqueous Solution via a Heterogeneous Fenton-like Reaction Catalyzed by Nano-Iron Oxides |
| 投稿时间：2015-03-01 |
| DOI：10.11654/jaes.2015.07.018 |
| 中文关键词: 铁氧化物 类Fenton反应 磺胺 降解 |
| 英文关键词: nano-iron oxides heterogeneous Fenton-like reaction sulfanilamide degradation |
| 基金项目:国家自然科学基金(41171254,41471405) |
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| 摘要点击次数: 3996 |
| 全文下载次数: 3764 |
| 中文摘要: |
| 采用纳米铁矿物(赤铁矿α-Fe2O3、磁赤铁矿γ-Fe2O3、磁铁矿Fe3O4、水铁矿Fe5HO8·4H2O)为催化剂与H2O2构成类Fenton反应,进行抗生素磺胺的氧化降解研究,并考察磺胺初始浓度、铁氧化物投加量、H2O2浓度、溶液pH等对磺胺氧化降解过程的影响。结果表明,磺胺初始浓度2 mg·L-1、赤铁矿投加量1 g·L-1、H2O2浓度30 mL·L-1、溶液pH 3.6和温度25 ℃条件下,反应72 h后磺胺的降解率为99.27%。利用LC-MS进行产物分析,表明铁氧化物催化类Fenton反应降解磺胺主要是催化氧化反应,磺胺分子结构中的对位氨基被氧化成硝基。 |
| 英文摘要: |
| Degradation of antibiotic sulfanilamide by a heterogeneous Fenton-like reaction was investigated using different nano- iron oxides(hematite, maghemite, magnetite, and ferrihydrite) as catalyst and hydrogen peroxide as oxidizing agent. The influences of initial sulfanilamide concentration, catalyst amount, H2O2 dose, and initial pH value on Fenton-like reaction were assessed. The optimal reaction conditions were 2 mg·L-1 of initial sulfanilamide concentration, 1 g·L-1 of catalyst, 30 mL·L-1 of H2O2, and 3.6 of initial pH, and the degradation rate of sulfanilamide could reach 99.27% within 72 h. The degradation process of sulfanilamide by the Fenton-like reaction was mainly oxidation of -NH2 group to the -NO2 via catalytic oxidation reaction. |
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