Novel Ordered Layered Double Hydroxides Ultra Thin Films Functionalized with Dawson-Type Polyoxometalates: Synthesis, Characterization and Photocatalytic Behavior under Visible Light

Jin Ping Wang; Dan Feng Li

doi:10.4028/www.scientific.net/AMR.1120-1121.53

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1120-1121Novel Ordered Layered Double Hydroxides Ultra Thin...

Novel Ordered Layered Double Hydroxides Ultra Thin Films Functionalized with Dawson-Type Polyoxometalates: Synthesis, Characterization and Photocatalytic Behavior under Visible Light

Abstract:

Novel ordered Ultra thin Films (UTFs) based on the hybrid assembly of exfoliated Zn-Cr Layered double hydroxide (LDH) monolayers and typical dawson-type polyoxometalate (POM) anions α-P₂W₁₈O₆₂^6-(P₂W₁₈) were prepared by utilizing a layer by layer (LBL) technique. The structural integrity of the UTFs were characterized by ICP-AES, XRD, IR, UV/DRS, indicating that the Dawson structures remained intact in the hybrid compositions. The morphology and the thickness of the UTFs were evaluated via SEM. The visible light photocatalytic performances of the UTFs were tested in the degradation of aqueous azo dye Congo red (CR). The UTFs showed much higher photocatalytic activity than pure Zn-Cr-NO₃^- LDH, mainly attributed to the improved absorbance and response ability to the visible light.

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Periodical:

Advanced Materials Research (Volumes 1120-1121)

Pages:

53-57

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.53

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Online since:

July 2015

Authors:

Jin Ping Wang, Dan Feng Li*

Keywords:

LBL, LDH, Photocatalysis, POM, UTFs, Visible Light

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* - Corresponding Author

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