催化作用
化学
吸附
矿化(土壤科学)
臭氧
针铁矿
核化学
傅里叶变换红外光谱
无机化学
化学工程
有机化学
氮气
工程类
作者
Zhiyong Bai,Qi Yang,Jianlong Wang
出处
期刊:Chemosphere
[Elsevier]
日期:2016-10-01
卷期号:161: 174-180
被引量:55
标识
DOI:10.1016/j.chemosphere.2016.07.012
摘要
Iron oxyhydroxides (FeOOH) are common crystalline forms of iron which play an important role in catalysis through a series of reduction-oxidation reactions. In this paper, Ce substituted goethite (Ce0.1Fe0.9OOH) was prepared by isomorphous substitution method, characterized by XRD, SEM, TEM-EDS, FTIR, and used for the catalytic ozonation of sulfamethazine (SMT). The results showed that the catalyst can significantly enhance the mineralization of SMT, and more than 42.1% SMT were mineralized in the presence of the catalyst, which is 1.74 times higher than ozonation alone. Moreover, with addition of catalyst, more ozone was dissolved into solution. The solution pH decreased due to small-molecule organic acids formation. The catalytic activity decreased slightly during the repeated batch experiments, due to the corrosion of the catalyst and the adsorption of the residual intermediates on the catalyst surface.
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