The adsorptive properties of UiO-66 towards organic dyes: A record adsorption capacity for the anionic dye Alizarin Red S.

Embaby, Marwa S.; Elwany, Saber D.; Setyaningsih, Wiwik; Saber, Mohamed R.

doi:10.1016/j.cjche.2017.07.014

Cited by 88 publications

(29 citation statements)

References 53 publications

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“…It can be concluded from the above results that the high correlation coefficient to Langmuir, Freundlich and Temkin isotherms suggest that several sorption mechanisms are involved. 58 Moreover, the obtained results revelled that the surface of MoS 2 exhibits a blend of heterogenous and homogenous active sites, and the overall rate of adsorption of MB on MoS 2 surface was achieved by the two isotherm mechanisms.…”

Section: Isothermsmentioning

confidence: 81%

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Revealing the role of the 1T phase on the adsorption of organic dyes on MoS₂ nanosheets

et al. 2019

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Section: Isothermsmentioning

confidence: 81%

“…These collective results indicated that the adsorption process, to large extent depends on the surface active sites induced by the 1T interfaces. 58…”

Section: Adsorption Performancementioning

confidence: 99%

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Revealing the role of the 1T phase on the adsorption of organic dyes on MoS₂ nanosheets

et al. 2019

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“…The values of the kinetic constant ( k″ ) confirmed that the adsorption process for MG ( k″ = 3.98 × 10 −2 g∙mg −1 min −1 ) was faster than that for ARS ( k″ = 4.29 × 10 −3 g∙mg −1 min −1 ). The fit of the model to the adsorption data demonstrate that the adsorption of the dyes on the adsorbent sites is the rate determining step [ 29 , 55 ]. Figure 3 d shows the variation of q t versus t 0.5 according with the intraparticle diffusion model.…”

Section: Resultsmentioning

confidence: 99%

“…Among the various types of MOFs tested, the lowest performing in terms of dye adsorption capacity were Cu-BTC [ 57 ] and Mil-53-Al-NH 2 [ 59 ]. Both the ZIF-67 prepared by Jin et al [ 61 ] and the UiO-66 prepared by Embaby et al [ 55 ] acted as strong adsorbents with q e values of 2545 and 400 mg/g, respectively, with adsorption times between 30 and 60 min. The Fe-BTC synthesized by Huo et al [ 32 ] and the mixed-ligand Cu-BDC-BTC compound prepared by Shi et al [ 60 ] had adsorption capacities comparable to those obtained here, 205 and 185 mg/g, respectively, but the time required for the adsorption process (120 min) was four times higher than that obtained by us (30 min).…”

Section: Discussionmentioning

confidence: 99%

Adsorption of Malachite Green and Alizarin Red S Dyes Using Fe-BTC Metal Organic Framework as Adsorbent

Delpiano¹,

Tocco²,

Medda

et al. 2021

IJMS

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Synthetic organic dyes are widely used in various industrial sectors but are also among the most harmful water pollutants. In the last decade, significant efforts have been made to develop improved materials for the removal of dyes from water, in particular, on nanostructured adsorbent materials. Metal organic frameworks (MOFs) are an attractive class of hybrid nanostructured materials with an extremely wide range of applications including adsorption. In the present work, an iron-based Fe-BTC MOF, prepared according to a rapid, aqueous-based procedure, was used as an adsorbent for the removal of alizarin red S (ARS) and malachite green (MG) dyes from water. The synthesized material was characterized in detail, while the adsorption of the dyes was monitored by UV-Vis spectroscopy. An optimal adsorption pH of 4, likely due to the establishment of favorable interactions between dyes and Fe-BTC, was found. At this pH and at a temperature of 298 K, adsorption equilibrium was reached in less than 30 min following a pseudo-second order kinetics, with k″ of 4.29 × 10−3 and 3.98 × 10−2 g∙mg−1 min−1 for ARS and MG, respectively. The adsorption isotherm followed the Langmuir model with maximal adsorption capacities of 80 mg∙g−1 (ARS) and 177 mg∙g−1 (MG), and KL of 9.30·103 L∙mg−1 (ARS) and 51.56·103 L∙mg−1 (MG).

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Recent Progress in Adsorptive Removal of Water Pollutants by Metal‐Organic Frameworks

2021

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Difficulty in accessing drinkable water resources, mostly originating from water pollution, has become a serious challenge for humans and the environment. Increasing population, growth of industrial activities, and the increasing demand for the agricultural sector have generated various pollutants into the environment, especially water resources. Thus, treatment of industrial effluents before discharging them into the environment is necessary to reduce the pollutants, maintain the quality of drinkable water, recycle wastewater sources to save water consumption, and minimize water resource supplied. Among the new materials applied for the adsorptive removal of pollutants from aquatic environments, metal‐organic frameworks have become a promising candidate to optimize wastewater treatment process. This is mainly due to their unique properties such as structural diversity, high specific surface area, and high adsorption capacity. This article aims to review the highlights and challenges of MOFs when are being used to remove heavy metals, dyes, pharmaceuticals, personal care products, pesticides, and herbicides from polluted water resources. The relationship between the properties of MOFs and their performance for adsorption of pollutants as well as the key mechanisms of adsorbing water pollutants using MOFs are presented. The use of water‐stable MOFs such as MOF‐235, MIL‐53, MIL‐100, MIL‐101, UiO‐66, ZIF‐67, and ZIF‐8 will be discussed for removing various pollutants. The adsorption efficiency of functionalized MOFs, magnetic MOFs, MOF‐polymer, graphene oxide‐MOF, and CNT‐MOF composites will be reviewed in comparison with commercial adsorbents such as zeolites and activated carbon. As for the conclusion, the challenges and outlooks of applying MOFs and MOF‐based materials for the adsorptive separation of water pollutants are summarized.

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The adsorptive properties of UiO-66 towards organic dyes: A record adsorption capacity for the anionic dye Alizarin Red S.

Cited by 88 publications

References 53 publications

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS₂ nanosheets

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS₂ nanosheets

Adsorption of Malachite Green and Alizarin Red S Dyes Using Fe-BTC Metal Organic Framework as Adsorbent

Recent Progress in Adsorptive Removal of Water Pollutants by Metal‐Organic Frameworks

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The adsorptive properties of UiO-66 towards organic dyes: A record adsorption capacity for the anionic dye Alizarin Red S.

Cited by 88 publications

References 53 publications

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets

Adsorption of Malachite Green and Alizarin Red S Dyes Using Fe-BTC Metal Organic Framework as Adsorbent

Recent Progress in Adsorptive Removal of Water Pollutants by Metal‐Organic Frameworks

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Revealing the role of the 1T phase on the adsorption of organic dyes on MoS₂ nanosheets

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS₂ nanosheets