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- Title
In-situ growth of ZIF-8/CP with ultra-high adsorption capacity for removing Malachite green from water.
- Authors
Lou, Jie; Fu, Qiuping; Yu, Lei; Yuan, Hui; Zhao, Jie; Wei, Xinde; Wang, Tong; Mo, Changli
- Abstract
An environmentally friendly and low-cost chitosan-containing polysaccharide (CP) composite ZIF-8/CP was designed and prepared based on the difficulty of separating the traditional adsorbent from the water phase. ZIF-8/CP was synthesized through in-situ growth approach. The physical, chemical and structure properties of ZIF-8/CP were determined through a series of characterization methods, including SEM, FT-IR and PXRD. The effects of touch time, pH, temperature, and co-existing ions on adsorption were assessed. In addition, kinetics, isotherms of adsorption and thermodynamics were examined. The data of isotherms for adsorption indicated that the adsorption of ZIF-8/CP on MG was similar to the Langmuir model, with a maximum adsorption capacity of 1428.57 mg/g. Moreover, the kinetic parameters were consistent with the pseudo-2nd-order equation. Thermodynamic studies (ΔG < 0, ΔH > 0) demonstrated a heat-absorbing and spontaneous adsorption process. Our study reveals that ZIF-8/CP has good adsorption properties and environmental properties.
- Publication
Carbon Letters, 2023, Vol 33, Issue 7, p2029
- ISSN
1976-4251
- Publication type
Article
- DOI
10.1007/s42823-023-00583-3