Design of a novel and efficient electro-Fenton cathode with skeleton of melamine foams

Design of a novel and efficient electro-Fenton cathode with skeleton of melamine foams
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一种新型高效三聚氰胺泡沫骨架电芬顿阴极的设计

DOI:
10.1016/j.matlet.2018.12.096
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发表时间:
2019-03
期刊:
影响因子:
3
通讯作者:
Wang Fei
Wang Fei
中科院分区:
材料科学3区
文献类型:
--
作者:
Zhang Yimei;Chen Zhuang;Wu Panpan;Duan Yaxiao;Zhao Yalong;Zhou Lincheng;Lai Yuxian;Wang Fei

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首次开发了一种以三聚氰胺泡沫(MF)为骨架的简便方法,构建了 Fe3O4 涂层多壁碳纳米管(MWCNT)-聚四氟乙烯(PTFE)作为高效电芬顿(EF)阴极(Fe@PTFE/MWCNT-MF)。比较研究了PTFE对H2O2产率的影响。使用0.3%的PTFE修饰电极在60min内H2O2产量最高(130mgL−1)。接触角和线性扫描伏安法(LSV)分析表明,最佳电极表现出超疏水性(137°)和对氧还原反应(ORR)更高的电流响应。与传统的均质EF系统相比,复合阴极表现出优异的H2O2活化能力,可生成自由基dotOH。亚甲基蓝(MB)和总有机碳(TOC)的去除率分别达到100%和78.4%。还提出了一种可能的降解机制。 Fe@PTFE/MWCNT-MF 是氧化去除有机物的 EF 阴极的一个有吸引力的候选者。
A facile method using melamine foam (MF) as the framework was firstly developed to construct Fe3O4coated multi-walled carbon nanotube (MWCNT)- polytetrafluoroethylene (PTFE) as efficient electro-Fenton (EF) cathode (Fe@PTFE/MWCNT-MF). Effect of PTFE on the yield of H2O2was comparatively investigated. Using the 0.3% of PTFE modified electrode had the highest H2O2yield (130 mg L−1) within 60 min. The analysis of contact angle and linear sweep voltammetry (LSV) showed that the optimum electrode exhibited superhydrophobicity (137°) and higher current response for oxygen reduction reaction (ORR). Compared to the traditional homogeneous EF system, the composite cathode exhibited excellent activation of H2O2to generate radical dotOH. The removal rates of methylene blue (MB) and total organic carbon (TOC) reached 100% and 78.4%, respectively. A possible degradation mechanism was also proposed. The Fe@PTFE/MWCNT-MF was an attractive candidate as EF cathode for oxidation removal of organic matters.
基于氮掺杂石墨烯@碳纳米管复合材料的新型电芬顿气体扩散阴极
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