Recyclable hydrogel-MOFs composite beads for selective removal of Pb(II) from water

Yang, Chen; Xu, Ming; Wang, Yue; Li, Sihang; Lv, Xinyi; Wang, Haihua; Li, Zhenyu

doi:10.1016/j.cherd.2023.03.052

Cited by 6 publications

(1 citation statement)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To improve its adsorption capacity, they have explored the combination of hydrogel with other materials such as metal−organic frameworks (MOFs) and carbon dots. Yang et al 17 developed a novel hydrogel−MOF composite bead by functionalizing the hydrogel with sulfonic acid groups, resulting in enhanced adsorption of Pb 2+ . However, MOF materials are expensive and have low yields.…”

Section: ■ Introductionmentioning

confidence: 99%

Carbon Dot-Stabilized Hydrogel Composite: A New Adsorbent for Efficient and Sustainable Pb(II) Removal

Wei,

Zhou,

Wei

et al. 2024

Langmuir

View full text Add to dashboard Cite

In this paper, a carbon dot hydrogel composite (CDs-Hy) capable of efficiently removing Pb(II) was prepared by hydrogen bonding self-assembly in combination with carbon dots and a hydrogel. CDs-Hy was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS), and the effect of the adsorption conditions on the adsorption efficiency of CDs-Hy was studied. The results of the study showed that the incorporation of carbon dots, on the one hand, significantly increased the adsorption capacity of the material. On the other hand, it can increase the stability of hydrogels in aqueous solution. The possible adsorption mechanisms were further verified as ion exchange and coordination. CDs-Hy is a novel adsorbent material capable of removing Pb 2+ efficiently, which can be reused several times with high stability.

show abstract

Section: ■ Introductionmentioning

confidence: 99%