Electric field induced activated carbon fiber (ACF) cathode transition from an initiator/a promoter into an electrocatalyst in ozonation process
Electric field induced activated carbon fiber (ACF) cathode transition from an initiator/a promoter into an electrocatalyst in ozonation process
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电场诱导活性碳纤维（ACF）阴极在臭氧化过程中从引发剂/促进剂转变为电催化剂
DOI：
10.1016/j.cej.2016.06.079
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发表时间：
2016-11
影响因子：
15.1
通讯作者：
Zheng, Huaili
中科院分区：
文献类型：
--
作者：
Mirza, Zakaria A.;Saylor, Greg;Zhai, Jun;Zheng, Huaili
分别采用吸附法、臭氧氧化法、电解法和活性炭纤维电氧化法对水中难降解致癌污染物硝基苯（NB）进行了去除研究。动力学分析表明，各工艺对NB的去除均符合准一级反应动力学，其Kappof为14.90 × 10− 2 min −1，远高于其它工艺。此外，Kappof E-过氧酮-ACF工艺在ACF循环使用100次后，活性仍略有降低，仅为12.18 × 10− 2 min − 1，显示出可持续性。此外，根据孔结构特征，表面官能团，FTIR，和SEM图像，E-过氧酮过程中没有显着改变ACF表面，而单独臭氧可以造成重大损害。这些结果表明，ACF的引发剂/促进剂在臭氧氧化的电催化剂通过自由电子注入诱导。与钛阴极相比，活性炭纤维能同步吸附污染物和臭氧，并促进H2 O2的产生，从而显著提高了E-过氧酮中NB的去除率。研究表明，活性炭纤维阴极是一种很有前途的电-过氧化物法去除有机污染物的材料。
Removal of nitrobenzene (NB), a carcinogenic and refractory pollutant, in aqueous solution by adsorption, ozonation, electrolysis, and electro-peroxone (E-peroxone) with activated carbon fiber (ACF) was investigated, respectively. Kinetic analyses of NB removal by all the processes followed pseudo-first-order kinetics and the Kappof E-peroxone-ACF was 14.90 × 10−2min−1, which was much higher than the others. Besides, the Kappof E-peroxone-ACF process reduces slightly to 12.18 × 10−2min−1even after 100 times of ACF recycle, showing a sustainable activity. Moreover, according to the pore texture characteristics, surface functional groups, FTIR, and SEM images, E-peroxone process does not considerably alter the ACF surface, whereas ozone alone can cause substantial damage to it. These results suggested that ACF was induced from an initiator/a promoter into an electrocatalyst in ozonation by free electrons injection. Moreover, comparing with titanium cathode, ACF can remarkably improve the removal of NB in E-peroxone due to the synchronous adsorption of pollutants and ozone as well as the enhancement of H2O2generation. It indicates that the ACF cathode is a promising material for organic pollutants removal in the E-peroxone process.
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DOI：
10.1080/01919512.2014.942723
发表时间：
2015-01
期刊：
Ozone: Science & Engineering
影响因子：
--
作者：
K. Shang;Jie Li;N. Lu;Qiuhong Sun;Yan Wu;Yixin Yang
通讯作者：
K. Shang;Jie Li;N. Lu;Qiuhong Sun;Yan Wu;Yixin Yang
影响因子：
12.8
作者：
Qiang, ZM;Chang, JH;Huang, CP
通讯作者：
Huang, CP
影响因子：
12.8
作者：
M. Sánchez-Polo;U. Gunten;J. Rivera-Utrilla
通讯作者：
M. Sánchez-Polo;U. Gunten;J. Rivera-Utrilla
影响因子：
4.2
作者：
Faria, PCC;Orfäo, JJM;Pereira, MFR
通讯作者：
Pereira, MFR
通过新型电化学驱动过程有效降解亚甲基蓝
影响因子：
5.4
作者：
Yuan, Shi;Li, Zhaoxin;Wang, Yujue
通讯作者：
Wang, Yujue