2024
DOI: 10.1021/acs.langmuir.3c03347
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Synthesis of WS42– Intercalated NiZnAl LDHs as Effective Adsorbents to Remove Copper Ions from Water

Hao Wang,
Hongli Li,
Yang Li
et al.

Abstract: A series of WS 4 2− intercalated NiZnAl ternary-layered double-hydroxides (LDHs) with various Ni/Zn ratios were synthesized by an ion-exchange method and used as adsorbents to remove Cu 2+ from water. The introduction of Zn produced ZnS on the surface of LDHs. The LDH with the Ni/Zn/Al molar ratio of 0.1/1.9/1 showed the best adsorption ability. Cu 2+ ions are removed via three routes: forming [Cu−WS 4 ] n− complexes via soft acid−soft base interaction between WS 4 2− and Cu 2+ , isomorphic substitution of Zn … Show more

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