Crystalline Covalent Organic Frameworks from Triazine Nodes as Porous Adsorbents for Dye Pollutants
Huo, Jianqiang; Luo, Bingcai; Chen, Ying
Source PublicationACS OMEGA

The development of covalent organic frameworks (COFs) with nodes and spacers, designed to maximize their functional properties, is a challenge. Triazines exhibit better electron affinity than benzene-based aromatic rings; therefore, structures based on 1,3,5-substituted triazine-centered nodes are more stable than those from 1,3,5-benzene-linked COFs. Compared to COFs prepared from flat, rigid sp(2) carbon-linked triazine nodes, the O-linked flexible tripodal triazine-based COF demonstrates several unpredictable properties such as an increase in crystallinity and cavity size. In this study, the COF prepared from O-linked flexible 2,4,6-tris(p-formylphenoxy)-1,3,5-triazine serves as an excellent absorbent for removing methylene blue from water. Our results demonstrate that COF is highly stable in water and functions as a robust adsorbent. Its adsorption isotherm is consistent with the Langmuir model and its adsorption kinetics follows a pseudo-second order model. Moreover, the COF was characterized using elemental analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, solid-state ultraviolet-visible spectroscopy, and X-ray diffraction. It exhibited permanent porosity, a high specific surface area (279.5 m(2).g(-1)), and was chemically and thermally stable. Photophysical studies revealed that the COF exhibits a low bandgap energy value of 3.07 eV, indicating its semiconducting nature.

Indexed BySCIE
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000505078800026
Original Document TypeArticle
Citation statistics
Cited Times:54[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorHuo, Jianqiang
AffiliationNorthwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Polymer Mat Gansu Prov, Key Lab Ecofunct Polymer Mat,Minist Educ, Lanzhou 730070, Gansu, Peoples R China
First Author Affilication生态环境相关高分子材料教育部重点实验室
Corresponding Author Affilication生态环境相关高分子材料教育部重点实验室
First Signature Affilication生态环境相关高分子材料教育部重点实验室
Recommended Citation
GB/T 7714
Huo, Jianqiang,Luo, Bingcai,Chen, Ying. Crystalline Covalent Organic Frameworks from Triazine Nodes as Porous Adsorbents for Dye Pollutants[J]. ACS OMEGA,2019,4(27):22504-22513.
APA Huo, Jianqiang,Luo, Bingcai,&Chen, Ying.(2019).Crystalline Covalent Organic Frameworks from Triazine Nodes as Porous Adsorbents for Dye Pollutants.ACS OMEGA,4(27),22504-22513.
MLA Huo, Jianqiang,et al."Crystalline Covalent Organic Frameworks from Triazine Nodes as Porous Adsorbents for Dye Pollutants".ACS OMEGA 4.27(2019):22504-22513.
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