Facile synthesis of ZIF-8-lignosulfonate microspheres with ultra-high adsorption capacity for Congo red and tetracycline removal from water

Juan Dai; Tianying Chen; Qixu Chen; Hao Ma; Xianmang Xu; Wenpeng Yuan; Luying Wang

doi:10.1016/j.ijbiomac.2023.124672

Facile synthesis of ZIF-8-lignosulfonate microspheres with ultra-high adsorption capacity for Congo red and tetracycline removal from water

Int J Biol Macromol. 2023 Jul 1;242(Pt 1):124672. doi: 10.1016/j.ijbiomac.2023.124672. Epub 2023 May 9.

Authors

Juan Dai¹, Tianying Chen², Qixu Chen³, Hao Ma⁴, Xianmang Xu³, Wenpeng Yuan³, Luying Wang⁵

Affiliations

¹ Biological Engineering Technology Innovation Center of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Heze Branch, Heze, 274000, China. Electronic address: daij2021@qlu.edu.cn.
² Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Zhejiang Sci-Tech University, Hangzhou 310018, China.
³ Biological Engineering Technology Innovation Center of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Heze Branch, Heze, 274000, China.
⁴ Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
⁵ Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China. Electronic address: wangly@bjfu.edu.cn.

PMID: 37164136
DOI: 10.1016/j.ijbiomac.2023.124672

Abstract

Zeolitic imidazolate frameworks (ZIFs) can be used as adsorbent to efficiently adsorb organic pollutants. However, the hydrophobicity of the ZIFs may be easily to form ZIFs nanoparticles aggregates, hampering the effective and practical application in adsorption. In this study, novel spherical composites of ZIF-8 incorporated with lignosulfonate (LS) were synthesized by in-situ growth method. The effects of different mass ratios of LS and Zn in ZIF-8-LS composites were evaluated with respect to structural characteristics and adsorption properties. As an adsorbent for adsorptive removing Congo Red (CR) and tetracycline (TC) from water, the prepared ZIF-8-LS₄ shows the best adsorption capacity of 31.5 mg g^-1 and 48 mg g^-1, respectively. The spherical structure facilitates the contact between the ZIF-8 and the adsorbed substance, in addition to the H-bonding, electrostatic and π-π stacking interactions also contribute to the improvement of the adsorption performance of the ZIF-8-LS₄ composite. The outstanding adsorption capacity and good reusability of the ZIF-8-LS₄ composite provide a good prospect for the effective removal of other contaminants from water.

Keywords: Adsorption; Lignosulfonate; ZIF-8.

MeSH terms

Adsorption
Anti-Bacterial Agents
Congo Red
Microspheres
Tetracycline
Water / chemistry
Water Pollutants, Chemical* / chemistry
Zeolites* / chemistry

Substances

Congo Red
Water
lignosulfuric acid
Tetracycline
Anti-Bacterial Agents
Water Pollutants, Chemical
Zeolites