期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 306, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2022.122601
关键词
MXene; Sb-SnO2; Wastewater treatment; Electrochemical oxidation; Porous
In this study, a Ti3C2 modified Sb-SnO2 electrode was prepared by electrodeposition technology. The modified electrode showed improved oxidation capacity, larger active surface area, and enhanced ability to generate hydroxyl radicals, resulting in effective degradation of organic pollutants in wastewater.
Sb-SnO2 is an appealing electrode for degrading organic pollutants in wastewater treatment, albeit further modifications are needed for its inefficient electrochemical oxidation capacity. In this work, we prepared Ti3C2 modified Sb-SnO(2 )electrode by electrodeposition technology. High-conductive MXene matrix regulated the Sb-Sn alloy nucleation process to decrease its domain size during deposition and generated pores during the annealing process. When introducing 20 mg MXene into the electrolyte, the obtained Sb-SnO2 electrode (Ti3C2-20) presented a larger oxygen evolution over-potential (2.32 V vsSCE), increased amount of active sites, and enlarged electrochemical specific surface area (similar to 4.4-fold) than the unmodified electrode, resulting in a promoted center dot OH generation ability (similar to 7.4 times). Methylene blue (MB), methyl orange (MO), norfloxacin (NOR), and P-phenylenediamine (PPD) were effectively degraded by the Ti3C2-20 anode with economic energy consumption. Moreover, the Ti3C2-20 electrode also featured a longer lifetime, almost fivefold, than the unmodified Sb-SnO2 electrode due to its larger loading amount and decreased charge transfer resistance. Consequently, this work offers a new perspective for designing efficient and stable porous electrodes to address water pollution issues.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据