Jump to main content
Jump to site search


Adsorptive removal of organic dyes from aqueous solution by a Zr-based metal–organic framework: effects of Ce(III) doping

Author affiliations

Abstract

Herein, we report the synthesis and characterization of Ce(III)-doped UiO-66 nanocrystals, revealing their potential to efficiently remove organic dyes such as methylene blue (MB), methyl orange (MO), Congo red (CR), and acid chrome blue K (AC) from aqueous solutions. Specifically, the room-temperature adsorption capacities of Ce(III)-doped UiO-66 equaled 145.3 (MB), 639.6 (MO), and 826.7 (CR) mg g−1, exceeding those reported for pristine UiO-66 by 490, 270, and 70%, respectively. The above behavior was rationalized based on zeta potential and adsorption isotherm investigations, which revealed that Ce(III) doping increases the number of adsorption sites and promotes π–π interactions between the adsorbent and the adsorbate, thus improving the adsorption capacity for cationic and anionic dyes and overriding the effect of electrostatic interactions. The obtained results shed light on the mechanism of organic dye adsorption on metal–organic frameworks, additionally revealing that the synergetic interplay of electrostatic, π–π, and hydrophobic interactions results in the operation of two distinct adsorption regimes depending on adsorbate concentration.

Graphical abstract: Adsorptive removal of organic dyes from aqueous solution by a Zr-based metal–organic framework: effects of Ce(iii) doping

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Jan 2018, accepted on 13 Feb 2018 and first published on 13 Feb 2018


Article type: Paper
DOI: 10.1039/C8DT00217G
Citation: Dalton Trans., 2018, Advance Article
  •   Request permissions

    Adsorptive removal of organic dyes from aqueous solution by a Zr-based metal–organic framework: effects of Ce(III) doping

    J. Yang, R. Ying, C. Han, Q. Hu, H. Xu, J. Li, Q. Wang and W. Zhang, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C8DT00217G

Search articles by author

Spotlight

Advertisements