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国家自然科学基金(20772129)

作品数:1 被引量:5H指数:1
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
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Effect of dye-metal complexation on photocatalytic decomposition of the dyes on TiO_2 under visible irradiation被引量:5
2009年
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 dyemetal ratios. The relative chemical inert Zn2+ tended to enhance the photodegradation of both anionic dyes. The mechanism underlying the different effect of Cu2+ was discussed from the different roles of surface-adsorbed and dye-coordinated Cu2+ in the photodegradation of dyes.
MAHMOOD TariqCHEN ChunchengLIU LiliZHAO DanMA WanghongLIN JunZHAO Jincai
关键词:PHOTOCATALYSIS
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