4.7 Article

Synthesis, characterization, and application of MOF@clay composite as a visible light-driven photocatalyst for Rhodamine B degradation

Journal

CHEMOSPHERE
Volume 291, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.132922

Keywords

Sepiolite; MOFs; Visible light; Photocatalyst; Rhodamine B dye; MOF@clay

Funding

  1. Japan Society for the Promotion of Sciences (JSPS) [JP17355, JP17F17355]

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Metal Organic Frameworks (MOFs) composites with natural clay materials provide a solution to reduce production costs and address stability issues, while also exhibiting excellent optoelectronic properties.
Metal Organic Frameworks (MOFs) with natural clay materials is a relatively new research avenue that appears to reduce high production costs and address the instability issues of pure MOFs. A novel MOF and natural clay composites of MOF@Sp_n (n = 1-4) were fabricated by the in situ precipitation of stable MOF, Zr6O4(OH)(4) (ABDC)(6) (where ABDC = 2-aminobenzene-1,4-dicarboxylic acid), over natural sepiolite (Sp) clay and used as a photocatalysts for elimination of organic dyes in aqueous media. The formation of MOF@Sp_n due to its strong electrostatic interactions between the positively charged MOF and the negatively charged sepiolite. Optimizing the Sp content in the composite strongly influenced the dispersibility, crystallinity of MOFs, resulting in progressively functional hybrid materials with an excellent optoelectronic properties. The composites lessened the shortcomings of the individual components and made them suitable as a visible light-active, highly efficient, standalone photocatalyst material that can degrade RhB.

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