Preparation of novel poly(sodium p-styrenesulfonate)/sodium alginate hydrogel incorporated with MOF-5 nanoparticles for the adsorption of Pb (II) and tetracycline

被引：22

作者：

Zhang, Shaopeng ^{[1
,2
]}

Ding, Jie ^{[1
]}

Tian, Dayong ^{[1
]}

Su, Wenhui ^{[1
]}

Liu, Feifei ^{[1
]}

Li, Qiaoling ^{[1
]}

Lu, Minghua ^{[2
]}

机构：

[1] Anyang Inst Technol, Coll Chem & Environm Engn, Anyang 455000, Henan, Peoples R China

[2] Henan Univ, Coll Chem & Chem Engn, Kaifeng 475004, Henan, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2024年 / 1300卷

关键词：

Pb(II); Sodium alginate; Tetracycline; MOF-5; Poly(sodium p-styrenesulfonate); PERFORMANCE; COMPOSITES; REMOVAL; BIOCHAR; CR(VI);

D O I：

10.1016/j.molstruc.2023.137313

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Novel alginate-based nanocomposite hydrogels with MOF-5 were prepared to remove Pb(II) and TC from water. The structure was characterized and analyzed by FTIR, XRD, TGA, SEM-EDS, BET, zeta, and XPS. Key factors, such as pH, adsorbent dosage, temperature, and coexisting salt ions were investigated in batch adsorption. The optimized MOF-5/PNaSS/SA demonstrated superior adsorption ability compared to SA and PNaSS/SA. In experimental tests, it exhibited maximum adsorption capacities for Pb(II) (189 mg/g) and TC (181 mg/g) at pH 6. The second-order kinetics model and the Langmuir isotherm model accurately described the sorption data of MOF-5/PNaSS/SA. Thermodynamic analysis indicated that the adsorption of MOF-5/PNaSS/SA was an exothermic and spontaneous process. MOF-5/PNaSS/SA also displayed excellent selectivity in adsorption and resistance to interference from salt ions. Moreover, the adsorption-desorption experiments demonstrated the recyclability of MOF-5/PNaSS/SA, as its adsorption capacity remained high level after ten cycles. The presence of O/S-containing groups and benzene rings played a crucial role in the adsorption mechanism, as confirmed by FTIR and XPS. In conclusion, MOF-5/PNaSS/SA has a high adsorption capacity and can effectively remove Pb(II) and TC from wastewater.

引用

页数：12

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