文章基本信息

标题：The effects of TiO2 morphology and crystal on the catalytic degradation of ammonia nitrogen with ozone
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作者：Zhiwu Liu ; Daxiang Huang ; Jing Tang 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：170
期号：5
页码：052008
DOI：10.1088/1755-1315/170/5/052008
语种：English
出版社：IOP Publishing
摘要：TO₂ nanostructures with various morphologies and crystal structures has been synthesized by hydrothermal method using Degussa P25 as a precursor and subsequent calcination at different temperature. The zonation catalytic activities of the as-prepared samples were investigated by degradation of ammonia nitrogen aqueous solution with ozone. The effects of the phase composition, surface area and shape of the nanostructures on degradation of ammonia nitrogen were evaluated. The initial degradation rate of ammonia nitrogen had been correlated with the morphology, and crystal structure examinations done with the help of transmission electron microscopy (TEM) and X-ray diffraction (XRD). The research done demonstrated that more rutile phase and the vast surface area are favourable for the zonation catalysis. The dependence of the zonation catalytic activity on the shape of catalyst surface is not significant as usually expected.