Dye adsorption and decomposition on two-dimensional titanium carbide in aqueous media

  title={Dye adsorption and decomposition on two-dimensional titanium carbide in aqueous media},
  author={Olha Mashtalir and Kevin M. Cook and Vadym N. Mochalin and Matthew C. Crowe and Michel W. Barsoum and Yury Gogotsi},
  journal={Journal of Materials Chemistry},
Recently a large family of two-dimensional (2D) layered early transition metal carbides and carbonitrides – labelled MXene – possessing metallic conductivity and hydrophilic surfaces was discovered. Herein we report on the adsorption and photocatalytic decomposition of organic molecules in aqueous environments containing Ti3C2Tx, a representative of the MXene family. This material possesses excellent adsorption toward cationic dyes, best described by a Freundlich isotherm. We also found that… 

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Experimental and computational studies suggest that the sorption behavior is related to the hydroxyl groups in activated Ti sites, where Pb(II) ion exchange is facilitated by the formation of a hexagonal potential trap.

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A new MXene phase, Ti2C, obtained by aluminum extraction from Ti2AlC and exfoliation of the reaction product, was electrochemically studied vs. Lithium. Li-ions insertion into the 2-D structure was

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Graphite oxide (GO) was prepared by a modified Hummers−Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N2

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Exfoliated two-dimensional early transition metal carbides and carbonitrides are usually not terminated by metal atoms but saturated by O, OH, and/or F, thus making it difficult to understand the

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New two-dimensional niobium and vanadium carbides have been synthesized by selective etching, at room temperature, of Al from Nb2 AlC and V2AlC, demonstrating good capability to handle high charge-discharge rates.