Magnetite nanoparticles as adsorbent material for Cu<sup>2+</sup> ions from aqueous solution

Jorge, Erlen Y. C.; Sánchez, Ricardo Martínez; Chacón, Juan Jiménez; Castañón, S. Dı́az; Piñar, Francisco de Paula Calderón

doi:10.1080/02726351.2017.1305028

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…In particular, the elimination of Cu 2+ adsorption process can provide additional technical and economic benefits. Therefore, it is necessary to study the application of novel adsorbents to consolidate their industrial application [11][12][13]. In this direction, it has been reported that two-dimensional (2D) nanomaterials show potential as promising adsorbents for heavy metal removal [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Multilayer Graphene Oxide Supported ZIF-8 for Efficient Removal of Copper Ions

Zhang

Wang

et al. 2022

Nanomaterials

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To address the performance deterioration of ZIF-8 for the adsorption of copper ions caused by powder volume pressure and particle aggregation, we employed multilayer graphene oxide (MGO) as a support to prepare composite adsorbents (MGO@ZIF-8) by using the in situ growth of ZIF-8 on MGO. Due to a good interfacial compatibility and affinity between ZIF-8 and graphene nanosheets, the MGO@ZIF-8 was successfully prepared. The optimal Cu2+ adsorption conditions of MGO@ZIF-8 were obtained through single factor experiments and orthogonal experiments. Surprisingly, the Cu2+ adsorption capacity was significantly improved by the integration of MGO and ZIF-8, and the maximum Cu2+ adsorption capacity of MGO@ZIF-8 reached 431.63 mg/g under the optimal adsorption conditions. Furthermore, the kinetic fitting and isotherm curve fitting confirmed that the adsorption law of Cu2+ by MGO@ZIF-8 was the pseudo-second-order kinetic model and the Langmuir isotherm model, which indicated that the process of Cu2+ adsorption was monolayer chemisorption. This work provides a new approach for designing and constructing ZIF-8 composites, and also offers an efficient means for the removal of heavy metals.

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