期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 209, 期 -, 页码 1007-1015出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2018.09.055
关键词
Aniline; Peroxydisulfate; Copper-nickel binary oxysulfide; Degradation mechanism
资金
- National Natural Science Foundation of China [21637003, 21607076]
Nanoscale copper-nickel binary oxysulfide (CuNiOS) was for the fast time synthesized by a co-precipitation method and characterized by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and Brunauer-Emmett-Teller (BET). CuNiOS was used as a catalyst for the degradation of aniline by peroxydisulfate (PDS) and its catalytic performance was investigated via various impact factors including catalyst loading, PDS and aniline concentrations as well as solution initial pH. The results demonstrate that CuNiOS had highly catalytic activity and approximately 80% of total organic carbon of aniline solution (0.1 mM) was removed within 20min. Copper and nickel ions on the surface of catalyst are the critical catalytic centers to activate PDS. The components of copper and nickel in the catalyst exhibited an excellent synergistic role in the degradation of aniline. The analyses of electron paramagnetic resonance (EPR) and the experiments of radical quenching confirmed the generation of SO4 center dot- and (OH)-O-center dot in the reaction system, both of which were responsible for the degradation of aniline. The intermediates of aniline degradation were identified by UPLC-MS and the possible pathways of aniline degradation are further proposed. Based on the results obtained in this study, it is educed that CuNiOS-catalyzed PDS is a promising approach to the treatment of the wastewater containing aniline.
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