Amino-functionalized yolk-shell magnetic silica nanoparticles for the selective removal of heavy metal ions

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED Microporous and Mesoporous Materials Pub Date : 2025-01-30 DOI:10.1016/j.micromeso.2025.113535

Haiyu Li , Yuqian Jia , Yuan Chen , Qingyang Ye , Lichen Xian , Jieshu Qian

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Abstract

Heavy metals in natural waters exist in both anionic and cationic forms, posing significant risks to ecological safety and human health. However, the selective and efficient removal of these ions remains a considerable challenge. In this study, we synthesized amino-functionalized yolk-shell magnetic silica nanocomposites and evaluated their adsorption performance for heavy metal anions and cations. The nanocomposites exhibited high adsorption capacities of 210 mg/g for Pb(II) and 57.8 mg/g for Cu(II) cations, while the protonated nanocomposites achieved an adsorption capacity of 52.6 mg/g for As(V) anions. Notably, the nanocomposites maintained strong specific adsorption capabilities for heavy metal ions even in the presence of competing ions, along with excellent reusability and operational convenience. This work presents a methodically designed strategy for functionalizing magnetic solid nano-adsorbents for the selective removal of heavy metal ions from water, offering new insights into the potential applications of yolk-shell nanoparticles.

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.