Fe-Cu bimetallic catalyst for the degradation of hazardous organic chemicals exemplified by methylene blue in Fenton-like reaction
Fe-Cu bimetallic catalyst for the degradation of hazardous organic chemicals exemplified by methylene blue in Fenton-like reaction
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DOI：
10.1016/j.jece.2020.104139
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发表时间：
2020-10
影响因子：
7.7
通讯作者：
T. Nguyen;C. Dong;C. Huang;Chiu-wen Chen;S. Hsieh;S. Hsieh
中科院分区：
文献类型：
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作者：
T. Nguyen;C. Dong;C. Huang;Chiu-wen Chen;S. Hsieh;S. Hsieh
采用共沉淀法合成了Fe-Cu氧化物类Fenton催化剂。对不同Cu含量的Fe-Cu复合材料的物理化学性质进行了表征。Fe-Cu-080复合材料中加入适量的Cu，可有效控制纳米级Fe 2 O3颗粒的尺寸，使其在纳米级范围内均匀分布，对亚甲基蓝（MB）具有较高的矿化活性和稳定性。Fe-Cu-080/H2 O2体系在较宽的pH范围内工作，对亚甲基蓝的去除效率高，金属浸出浓度低。电子顺磁共振（EPR）和荧光光谱（FL）结果表明，Fe-Cu复合材料/H2 O2体系中产生的OH自由基参与了亚甲基蓝（MB）的降解。Fe-Cu-080催化剂可以通过简单的外磁场从水溶液中分离出来。Fe-Cu-080无细胞毒性，可显著降低铜的毒性。Cu-Fe复合体系是一种具有吸引力的非均相类Fenton体系，可用于废水中有机污染物的去除。
Fe-Cu bimetallic oxide, a Fenton-like catalyst, was synthesized by a facile co-precipitation method. The physicochemical characteristics of as-synthesized Fe-Cu bimetallic composites with different Cu mass loadings were characterized. The Fe-Cu-080 composite, having suitable amount of Cu, could effectively control the size of bimetallic particles, with uniform distribution in nano range, exhibited a higher activity and stability in methylene blue (MB) mineralization. Fe-Cu-080/H2O2system could work in a wide range pH with high efficiency in MB removal and low metal leaching concentration. Electron paramagnetic resonance (EPR) and fluorescence (FL) results proved that the OHradical dotradicals generated in Fe-Cu composite/H2O2system were involved in the degradation of methylene blue (MB). The Fe-Cu-080 catalyst could be easily separation from the aqueous solution by simple external magnetic field. Fe-Cu-080 was not cytotoxic and could greatly reduce the copper toxicity. The combination of Cu-Fe in bimetallic structure was proved to be an attractive alternative method to improve the efficiency of heterogeneous Fenton-like system exemplified by the removal of organic pollutants from wastewater.