Functionalized UiO-66-NH2 by trimellitic acid for highly selective adsorption of basic blue 3 from aqueous solutions

Tingting Wang; Tingting Wang; Tingting Wang; Tingting Wang; Lin Han; Lin Han; Lin Han; Lin Han; Xin Li; Xin Li; Xin Li; Xin Li; Tianen Chen; Tianen Chen; Shifeng Wang; Shifeng Wang; Shifeng Wang

doi:10.3389/fchem.2022.962383

Frontiers in Chemistry (Sep 2022)

Functionalized UiO-66-NH2 by trimellitic acid for highly selective adsorption of basic blue 3 from aqueous solutions

Tingting Wang,
Tingting Wang,
Tingting Wang,
Tingting Wang,
Lin Han,
Lin Han,
Lin Han,
Lin Han,
Xin Li,
Xin Li,
Xin Li,
Xin Li,
Tianen Chen,
Tianen Chen,
Shifeng Wang,
Shifeng Wang,
Shifeng Wang

Affiliations

Tingting Wang: Innovation Laboratory of Materials for Energy and Environment Technologies, Tibet University, Lhasa, China
Tingting Wang: Hofmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen, China
Tingting Wang: Institute of Oxygen Supply, Everest Research Institute, Tibet University, Lhasa, China
Tingting Wang: Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa, China
Lin Han: Innovation Laboratory of Materials for Energy and Environment Technologies, Tibet University, Lhasa, China
Lin Han: Hofmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen, China
Lin Han: Institute of Oxygen Supply, Everest Research Institute, Tibet University, Lhasa, China
Lin Han: Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa, China
Xin Li: Innovation Laboratory of Materials for Energy and Environment Technologies, Tibet University, Lhasa, China
Xin Li: Hofmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen, China
Xin Li: Institute of Oxygen Supply, Everest Research Institute, Tibet University, Lhasa, China
Xin Li: Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa, China
Tianen Chen: Hofmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen, China
Tianen Chen: School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, Liaoning, China
Shifeng Wang: Innovation Laboratory of Materials for Energy and Environment Technologies, Tibet University, Lhasa, China
Shifeng Wang: Institute of Oxygen Supply, Everest Research Institute, Tibet University, Lhasa, China
Shifeng Wang: Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa, China

DOI: https://doi.org/10.3389/fchem.2022.962383
Journal volume & issue: Vol. 10

Abstract

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A novel metal-organic framework (MOF) UiO-66-TLA (UiO-66-Trimellitic Acid) was synthesized by one-pot method with trimellitic acid as modifier, which can effectively remove the basic dye Basic Blue 3 (BB3) in wastewater. Modification with carboxyl groups facilitates the adsorption of the cationic dye Basic Blue 3. The adsorption of BB3 by the modified UiO-66-TLA was significantly greater than that of its parent MOF. The adsorption capacity of the modified UiO-66-TLA for BB3 (234.23 mg g−1) was 93.2% higher than that of the original UiO-66-NH2 (121.24 mg g−1), this is closely related to the electrostatic interaction of -COOH in trimellitic acid. UiO-66-TLA was successfully synthesized as indicated by various characterization results. The adsorption kinetics conformed to the pseudo-second-order model, and the adsorption isotherm conformed to the Redlich-Peterson isotherm. This indicates that BB3 is a multi-parameter model of monolayer/multilayer arrangement on the adsorbent surface, and its rate-controlling step is chemisorption. The adsorption process was non-spontaneous and belonged to an endothermic reaction, in addition, it has great adsorption stability and regeneration The interaction of the modified UiO-66-TLA with BB3 was mainly affected by mechanisms, such as electrostatic interaction, π–π stacking as well as the abundant functional groups on UiO-66-TLA surface. These results demonstrate that UiO-66-TLA is an efficient, regenerable, water-stable material for the removal of BB3 in solution, with practical implications, suggesting its potential as a dye adsorbent.

Published in Frontiers in Chemistry

ISSN: 2296-2646 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: http://journal.frontiersin.org/journal/chemistry

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