Adsorption Behavior of Rhodamine B on UiO-66 |
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| Affiliation: | 1. Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran;2. Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran;3. Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran;1. Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China;2. South China Institute of Collaborative Innovation, Dongguan 523808, China;1. Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, Nanchang 330013, China;2. School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | The adsorption characteristics of UiO-66 (a Zr-containing metal–organic framework formed by terephthalate) for Rhodamine B (RhB), such as isotherms, kinetics and thermodynamics, were investigated systematically. The batch adsorption data conform well to the Langmuir and Freundlich isotherms. The adsorption kinetics of UiO-66 for RhB can be well described by the pseudo first-order model, and the adsorption thermodynamic parameters ΔG0, ΔH0 and ΔS0 at 273 K are ? 6.282 kJ·mol? 1, 15.096 kJ·mol? 1 and 78.052 J·mol? 1·K? 1, respectively. The thermodynamic analyses show that the adsorption process of RhB on UiO-66 is more favorable at higher temperatures. UiO-66 can be regenerated by desorbing in DMF solution with ultrasonic for 1 h. UiO-66 can keep good performance for at least six cycles of sorption/desorption. |
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