%0 Journal Article
%T Effect of dye-metal complexation on photocatalytic decomposition of the dyes on TiO2 under visible irradiation<br>
%A MAHMOOD Tariq
%A CHEN Chuncheng
%A LIU Lili
%A ZHAO Dan
%A MA Wanghong
%A LIN Jun
%A ZHAO Jincai
%A <br>
%J 环境科学学报(英文版)
%D 2009
%I 
%X The photocatalytic degradation of dyes (Acid Chrome Blue K (ACBK) and Alizarin Red (AR)) with strong complexation ability was investigated in the presence of metal ions under visible light irradiation.It was found that, at low dye-metal ratio, the photodegradation of ACBK was markedly inhibited by the addition of high oxidative potential Cu2+.However, at high dye-metal ratio, the presence of Cu2+ enhanced the photodegradation of ACBK.The negtive effect of Cu2+ on the photodegradation of AR was observed for all dye-metal ratios.The relative chemical inert Zn2+ tended to enhance the photodegradation of both anionic dyes.The mechanism underlying the different effect of Cu2+ is discussed from the different roles of surface-adsorbed and dye-coordinated Cu2+ in the photodegradation of dyes.
%K photocatalysis
%K degradation of dye pollutants
%K metal ions
%K TiO2<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=34A263755AC7118A6DE219478DA95A5C&yid=DE12191FBD62783C&vid=659D3B06EBF534A7&iid=0B39A22176CE99FB&sid=96A53C367B5173D7&eid=866F8A6B640835A7&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=14