Enhanced ciprofloxacin degradation by electrochemical activation of persulfate using iron decorated carbon membrane cathode: promoting direct single electron transfer to produce 1O2
Enhanced ciprofloxacin degradation by electrochemical activation of persulfate using iron decorated carbon membrane cathode: promoting direct single electron transfer to produce 1O2
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使用铁装饰碳膜阴极电化学活化过硫酸盐增强环丙沙星降解：促进直接单电子转移产生 1O2
DOI：
10.1016/j.cej.2022.135264
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发表时间：
2022-02
影响因子：
15.1
通讯作者：
Ruzhen Xie
中科院分区：
文献类型：
--
作者：
Dongping Zhao;Andac Armutlulu;Qiang Chen;Ruzhen Xie
在这项工作中，采用新型铁装饰碳膜（FeCM）阴极和SnO2-Bi/Ti阳极进行了过硫酸盐（E-PS）的电化学活化，以实现环丙沙星（CIP）的节能处理。电化学氧化和PS活化的协同作用使其具有较好的CIP去除率。FeCM阴极优于各种阴极（Pt, Ti，石墨和不锈钢），因为FeCM上存在C = O， Fe2+/Fe3+和F，便于在E-PS系统中生成和利用。此外，负电荷的持续供应使Fe2+/Fe3+在FeCM阴极上快速氧化还原循环，既防止了铁的浸出，又减少了活性位点的消耗，从而使FeCM在大pH范围内具有较高的稳定性，提高了循环性能。通过去除各种持久性有机污染物和处理实际医院废水，评估了E-FeCM-PS在室外应用的潜力。提出了E-FeCM-PS过程中CIP的去除机理和可能的CIP降解途径。总的来说，这项工作为通过电活化PS有效减少有机污染物的连续生产102提供了一条可行的途径，并深入了解了铁掺杂碳膜在过硫酸盐阴极活化中的内在作用。
In this work, electrochemical activation of persulfate (E-PS) for the energy efficient treatment of ciprofloxacin (CIP) was performed using a novel iron-decorated carbon membrane (FeCM) cathode and SnO2-Bi/Ti anode. Synergistic effect of electrochemical oxidation and PS activation resulted in superior CIP removal. The FeCM cathode outperforms various cathodes (Pt, Ti, graphite, and stainless steel), owing to the existence of C = O, Fe2+/Fe3+, and F on FeCM, which can facilitate1O2generation and utilization in the E-PS system. Moreover, the continuous supply of negative charges endows rapid redox cycle of Fe2+/Fe3+on FeCM cathode, which not only prevents iron leaching, but also reduces the consumption of active sites, and thus, enables FeCM with high stability over a wide pH range and improved cyclic performance. The potential of E-FeCM-PS for outdoor application were evaluated by removing various persistent organic pollutants, and treating actual hospital effluent. The CIP removal mechanism in the E-FeCM-PS process and the possible CIP degradation pathways were proposed. Overall, this work provides a plausible route for the continuous production of1O2for effective abatement of organic contaminants via electro-activation of PS and gives an insight into the intrinsic role of iron-doped carbon membrane for persulfate cathodic activation.
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紫外/醌系统中亚砷酸盐和硝酸盐的氧化还原转化
影响因子：
11.4
作者：
Chen Zhihao;Jin Jiyuan;Song Xiaojie;Zhang Guoyang;Zhang Shujuan
通讯作者：
Zhang Shujuan
影响因子：
22.1
作者：
Ruzhen Xie;Xiaoyang Meng;Peizhe Sun;J. Niu;Wenju Jiang;L. Bottomley;Duo Li;Yongsheng Chen;J. Crittenden
通讯作者：
Ruzhen Xie;Xiaoyang Meng;Peizhe Sun;J. Niu;Wenju Jiang;L. Bottomley;Duo Li;Yongsheng Chen;J. Crittenden
DOI：
10.1021/acsestwater.1c00193.s001
发表时间：
2021-10
期刊：
ACS ES&T Water
影响因子：
--
作者：
Zonghao Luo;Richard Spinney;Zongsu Wei;Wei‐Ping Hu;F. Villamena;Weihua Song;D. Dionysiou;Ruiyang Xiao
通讯作者：
Zonghao Luo;Richard Spinney;Zongsu Wei;Wei‐Ping Hu;F. Villamena;Weihua Song;D. Dionysiou;Ruiyang Xiao
影响因子：
15.1
作者：
Jiang, Xia;Guo, Yinghui;Xie, Ruzhen
通讯作者：
Xie, Ruzhen
影响因子：
3.3
作者：
Martínez, LJ;Sik, RH;Chignell, CF
通讯作者：
Chignell, CF