%0 Journal Article
%T Deactivation of Titania Whiskers Used for Purification of Drinking Water<br>TiO2晶须在深度净化饮用水过程中失活原因分析
%A WEN Gao-fei
%A YANG Zhu-hong
%A LI Wei
%A FENG Xin
%A LU Xiao-hua
%A <br>文高飞
%A 杨祝红
%A 李伟
%A 冯新
%A 陆小华
%J 环境科学
%D 2007
%I 
%X The reason of deactivation of titania whiskers used for deep purification of drinking water and the corresponding regeneration methods were presented. AFM,XRD and ICP were carried out to characterize the titanium dioxide. The experimental results suggest that the main reason of deactivation of titania whiskers is the deposition of calcium carbonate on the catalyst surface. The surface of titania whiskers is covered by the insoluble carbonates generated from carbon dioxide produced during the degradation of organics and metal ions such as calcium in the tap water, and the activity of the titania whiskers decreases gradually till deactivation. After washing by 1mol/L hydrochloric acid for four hours, the photocatalytic activity of the titania whiskers can achieve 95 percent of that before deactivation. The photocatalytic activity of the titania whiskers which regenerated for many times keeps steady.
%K titania whiskers
%K photocatalyst
%K purification of drinking water
%K deactivation
%K regeneration<br>TiO2晶须
%K 光催化
%K 饮用水净化
%K 失活
%K 再生
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=0609280F1113C0FC&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=9CF7A0430CBB2DFD&sid=E6A891D2134F30C0&eid=FA80E56BCE302C59&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=13