4.5 Article

Enhanced Photocatalytic Activity of the AgI/UiO-66(Zr) Composite for RhodamineB Degradation under Visible-Light Irradiation

期刊

CHEMPLUSCHEM
卷 80, 期 8, 页码 1321-1328

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201402430

关键词

metal-organic frameworks; photocatalysis; rhodamine B; silver; zirconium

资金

  1. Singapore-Peking-Oxford Research Enterprise (SPORE) [COY-15-EWI-RCFSA/N197-1]

向作者/读者索取更多资源

Visible-light photocatalysts that degrade organic pollutants in an efficient and recyclable way are highly desirable for water treatment. In this study, UiO-66, a zirconium-based metal-organic framework, was conjugated with AgI to obtain a composite for use as photocatalyst. The AgI/UiO-66 composites with different composition ratios were synthesized by a simple solution method and exhibited remarkable activity for the degradation of rhodamineB (RhB) under visible-light irradiation. The scanning electron microscopy and X-ray diffraction results confirmed the outstanding structural stability of the AgI/UiO-66 photocatalysts. The photocatalytic stability of the AgI/UiO-66 composite was further examined by reusing AgI/UiO-66 for long-term dye degradation. The good stability of the AgI/UiO-66 composite can be attributed to the outstanding stability of the UiO-66 framework material, as well as the good interaction between AgI and the UiO-66 framework. The mechanism of the photocatalytic RhB degradation by AgI/UiO-66 was investigated by introducing different scavengers to compete for the possible reactive species involved in the degradation process.

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