In-situ incorporation of iron-copper bimetallic particles in electrospun carbon nanofibers as an efficient Fenton catalyst
In-situ incorporation of iron-copper bimetallic particles in electrospun carbon nanofibers as an efficient Fenton catalyst
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将铁铜双金属颗粒原位掺入电纺碳纳米纤维中作为高效芬顿催化剂
DOI：
10.1016/j.apcatb.2017.02.032
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发表时间：
2017-06-15
影响因子：
22.1
通讯作者：
Wang, Lianjun
中科院分区：
文献类型：
--
作者：
Wang, Jing;Liu, Chao;Wang, Lianjun
首次制备了碳纳米纤维负载铁铜纳米粒子复合催化剂（FeCu/CNF）。在碳化过程中通过碳热还原原位生成铁铜纳米粒子。表征结果表明，FeCu/CNF复合材料具有纤维状形貌、高比表面积的多孔结构和分散的铁铜纳米颗粒。为了比较，还制备了其他三种催化剂，包括单独的碳纳米纤维负载的铁纳米颗粒（Fe/CNF）、单独的碳纳米纤维负载的铜纳米颗粒（Cu/CNF）和块状碳基质负载的铁-铜纳米颗粒（FeCu/C）。以典型偶氮染料酸性橙子II（AOII）为降解对象，考察了催化剂的多相芬顿催化性能.结果表明，FeCu/CNF对100 mg/L AOII的去除率在1 h内可达97.7%，远高于相同条件下的对比催化剂。此外，FeCu/CNF还具有比Fe/CNF更宽的pH适应能力。根据中心点OH检测和催化剂的传质阻力测试结果，认为FeCu/CNF催化剂的显著催化性能是由于铁、铜的协同效应和催化剂纳米纤维结构的优越性。FeCu/CNF具有良好的稳定性和可回收性。合成的催化剂被证明是一个有吸引力的候选人在非均相芬顿化学。(C)2017爱思唯尔B. V.保留所有权利。
Iron-copper bimetallic nanoparticles supported on carbon nanofibers as a composite catalyst (FeCu/CNF) was prepared for the first time in this work. The iron-copper bimetallic nanoparticles were formed in situ by carbothermic reduction during the carbonization process. The characterization results show that the FeCu/CNF possesses fibrous morphology, porous structure with high specific surface area, and dispersed iron-copper nanoparticles. For comparison, three other catalysts, including solely iron nanoparticles supported on carbon nanofibers (Fe/CNF), solely copper nanoparticles supported on carbon nanofibers (Cu/CNF) and iron-copper nanoparticles supported on blocky carbon matrixes (FeCu/C) were also prepared. The heterogeneous Fenton catalytic performance of synthesized catalyst was evaluated by degradating a typical azo dye, Acid Orange II (AOII). The results show that almost 97.7% of 100 mg/L AOII is removed by FeCu/CNF in reaction time of 1 h, which is much higher than those of comparison catalysts operated in the same experimental condition. Additionally, the FeCu/CNF also reveals a Wider pH adaptation ability compared with Fe/CNF. Based on the results of center dot OH detection and resistance of mass transfer testing in catalysts, the remarkable catalytic performance of FeCu/CNF is considered as the synergistic effect of iron and copper and the superiority of nanofibrous structure in catalyst. The good stability and recoverability of FeCu/CNF were also demonstrated. The as-synthesized catalyst is proved to be an attractive candidate in heterogeneous Fenton chemistry. (C) 2017 Elsevier B.V. All rights reserved.