溶剂热原位合成 MIL-53(Fe)@碳纤维毡光催化膜用于罗丹明 B 的降解。
Solvothermal In-Situ Synthesis of MIL-53(Fe)@Carbon Felt Photocatalytic Membrane for Rhodamine B Degradation.
机构信息
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, Beijing 100083, China.
出版信息
Int J Environ Res Public Health. 2023 Mar 4;20(5):4571. doi: 10.3390/ijerph20054571.
In this study, MIL-53(Fe) was innovatively incorporated into carbon felt (CF) by growing in-situ using the solvothermal method. MIL-53(Fe)@carbon felt (MIL-53(Fe)@CF) was prepared and used for the degradation of rhodamine B (RhB). As a new photocatalytic membrane, MIL-53(Fe)@CF photocatalytic membrane has the characteristics of high degradation efficiency and recyclability. Influence of various parameters including MIL-53(Fe)@CF loading, light, electron trapper type, and starting pH on RhB degradation were investigated. The morphology, structure, and degradation properties of MIL-53(Fe)@CF photocatalytic membrane were characterized. Corresponding reaction mechanisms were explored. The results indicated that pH at 4.5 and 1 mmol/L HO, 150 mg MIL-53(Fe)@CF could photocatalytically degrade 1 mg/L RhB by 98.8% within 120 min, and the reaction rate constant (k) could reach 0.03635 min. The clearance rate of RhB decreased by only 2.8% after three operations. MIL-53(Fe)@CF photocatalytic membrane was found to be stable.
在这项研究中，通过溶剂热法原位生长，创新性地将 MIL-53(Fe) 嵌入到碳毡（CF）中。制备了 MIL-53(Fe)@碳毡（MIL-53(Fe)@CF），并将其用于罗丹明 B（RhB）的降解。作为一种新型光催化膜，MIL-53(Fe)@CF 光催化膜具有高效降解和可重复使用的特点。研究了各种参数（包括 MIL-53(Fe)@CF 的负载量、光照、电子捕获剂类型和起始 pH 值）对 RhB 降解的影响。对 MIL-53(Fe)@CF 光催化膜的形貌、结构和降解性能进行了表征。探讨了相应的反应机制。结果表明，在 pH 值为 4.5 和 1 mmol/L HO、150 mg MIL-53(Fe)@CF 的条件下，1 mg/L RhB 可在 120 min 内光催化降解 98.8%，反应速率常数（k）可达 0.03635 min。经过三次操作，RhB 的清除率仅下降了 2.8%。MIL-53(Fe)@CF 光催化膜表现出良好的稳定性。
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