Cd and Zn Complexes with 2,4,6-Tri(2-pyridyl)-s-Triazine and Terephthalate for Rapid, High-Capacity Adsorption of Congo Red

Overview

Journal ChemistryOpen

Specialty Chemistry

Date 2023 Feb 1

PMID 36722835

Authors

Yanfang Zhao

Yongliang Zhao

Ziyang Guo

Dan Zhou

Shuai Yuan

Xueqiong Zhang

Haibin Chu

Affiliations

Soon will be listed here.

Abstract

Three crystal complexes were designed and synthesised through the solvothermal method, with Cu , Zn , and Cd ions as the metal centres and 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ) and terephthalate (BDC ) as the ligands. Their compositions were determined to be Cd(TPTZ)Cl (Cd-MOF), {[Zn(TPTZ)(BDC)] ⋅ 3H O} (Zn-MOF), and Cu (PCA) (BDC)(H O) (Cu-MOF) (PCA =2-pyridinium amide), respectively. Cd-MOF can adsorb 90 % of Congo red (CR) in 10 s at room temperature and atmospheric pressure, and CR removal was complete at 20 s over a wide pH range. The adsorption capacity for CR reached 1440 mg g in 5 min. Selective adsorption was demonstrated in mixed dyes. The adsorption kinetic data agree well with the pseudo-second-order kinetic model. The Temkin model was successfully used to evaluate the adsorption isotherms of CR on Cd-MOF at room temperature, suggesting that adsorption occurs through a hybrid of monolayer and multilayer mechanisms.

Citing Articles

Bimetallic PCN-333 with Modulated Crystallization and a Porosity Structure for a Highly Efficient Removal of Congo Red.

Li B, Zhang X, Shen J, Zhang A, Huang H ACS Omega. 2024; 9(6):7173-7187.

PMID: 38371803 PMC: 10870413. DOI: 10.1021/acsomega.3c09256.

Cd and Zn Complexes with 2,4,6-Tri(2-pyridyl)-s-Triazine and Terephthalate for Rapid, High-Capacity Adsorption of Congo Red.

Zhao Y, Zhao Y, Guo Z, Zhou D, Yuan S, Zhang X ChemistryOpen. 2023; 12(2):e202200176.

PMID: 36722835 PMC: 9891126. DOI: 10.1002/open.202200176.

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