Electron-Rich Triazine-Conjugated Microporous Polymers for the Removal of Dyes from Wastewater

Bao-Ning Li; Xing-Long Zhang; Xiao-Hui Bai; Zhen-Jie Liang; Jian Li; Xiao-Yong Fan

doi:10.3390/molecules28124785

Electron-Rich Triazine-Conjugated Microporous Polymers for the Removal of Dyes from Wastewater

Molecules. 2023 Jun 15;28(12):4785. doi: 10.3390/molecules28124785.

Authors

Bao-Ning Li¹, Xing-Long Zhang¹, Xiao-Hui Bai¹, Zhen-Jie Liang², Jian Li¹, Xiao-Yong Fan¹

Affiliations

¹ School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China.
² School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China.

Abstract

Conjugated microporous polymers (CMP) as porous functional materials have received considerable attention due to their unique structures and fascinating properties for the adsorption and degradation of dyes. Herein, a triazine-conjugated microporous polymer material with rich N-donors at the skeleton itself was successfully synthesized via the Sonogashira-Hagihara coupling by a one-pot reaction. These two polymers had Brunauer-Emmett-Teller (BET) surface areas of 322 and 435 m²g^-1 for triazine-conjugated microporous polymers (T-CMP) and T-CMP-Me, respectively. Due to the porous effects and the rich N-donor at the framework, it displayed a higher removal efficiency and adsorption performance compared to cationic-type dyes and selectivity properties for (methylene blue) MB⁺ from a mixture solution of cationic-type dyes. Furthermore, the T-CMP-Me could quickly and drastically separate MB⁺ and (methyl orange) MO^- from the mixed solution within a short time. Their intriguing absorption behaviors are supported by ¹³C NMR, UV-vis absorption spectroscopy, scanning electron microscopy, and X-ray powder diffraction studies. This work will not only improve the development of porous material varieties, but also demonstrate the adsorption or selectivity of porous materials for dyes from wastewater.

Keywords: adsorption; conjugated microporous polymers; dyes; wastewater.

Grants and funding

This work was supported by The Young Talent Promotion Program of Yulin (20220403), the Research Foundation of Yulin University (2023GK05), and the Basic Science Research Project of Shaanxi Province (22JHQ034).