Metal–organic frameworks for heavy metal removal from water

Kobielska, Paulina A.; Howarth, Ashlee J.; Farha, Omar K.; Nayak, Sanjit

doi:10.1016/j.ccr.2017.12.010

Cited by 840 publications

(320 citation statements)

References 69 publications

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“…There are studies which show the toxicity effect of few nanomaterials, as shown in Table 6. Moreover, few metal oxides show some toxic character at high and some, even at low concentrations [173,174]. Furthermore, the toxicity of CNTs is depending on different properties like length, surface area, distribution ratio, aggregation degree, initial concentration of material [175].…”

Section: Self-toxicity Of Nanomaterialsmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

522

160

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Water is an essential part of life and its availability is important for all living creatures. On the other side, the world is suffering from a major problem of drinking water. There are several gases, microorganisms and other toxins (chemicals and heavy metals) added into water during rain, flowing water, etc. which is responsible for water pollution. This review article describes various applications of nanomaterial in removing different types of impurities from polluted water. There are various kinds of nanomaterials, which carried huge potential to treat polluted water (containing metal toxin substance, different organic and inorganic impurities) very effectively due to their unique properties like greater surface area, able to work at low concentration, etc. The nanostructured catalytic membranes, nanosorbents and nanophotocatalyst based approaches to remove pollutants from wastewater are eco-friendly and efficient, but they require more energy, more investment in order to purify the wastewater. There are many challenges and issues of wastewater treatment. Some precautions are also required to keep away from ecological and health issues. New modern equipment for wastewater treatment should be flexible, low cost and efficient for the commercialization purpose.

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Section: Self-toxicity Of Nanomaterialsmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

522

160

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“…Of these different methods, adsorption is probably the most effective, economically feasible, environmentally sustainable, and technologically promising processes 20 . Recently, a variety of adsorbents such as activated carbons 7,21 , iron-based metal oxides 22 , metal-organic frameworks 23 , polymeric and biomass-based materials 9,24,25 have been used for Cr(VI) removal. In particular, polymeric materials have been shown to be highly efficient at adsorbing Cr(VI) and their highly branched structures can be readily functionalized to selectively adsorb and remove different heavy metal ions 26,27 .…”

mentioning

confidence: 99%

A systematic study of hexavalent chromium adsorption and removal from aqueous environments using chemically functionalized amorphous and mesoporous silica nanoparticles

Jang

Pack

Kim

et al. 2020

Sci Rep

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We report on the synthesis and characterization of highly monodisperse amorphous silica nanoparticles (ASNs) and mesoporous silica nanoparticles (MSNs) with particle sizes of 15-60 nm. We demonstrate adsorption of cr(Vi) ions on amino-functionalized ASns (nH 2-ASNs) and MSNs (NH 2-MSNs) and their removal from aqueous environments and show the specific surface area (SSA) of NH 2-MSNs is four times as larger as that of nH 2-ASNs and that more than 70% of the total SSA of NH 2-MSNs is due to the presence of nanopores. Analyses of Cr(VI) adsorption kinetics on NH 2-ASNs and NH 2-MSNs exhibited relatively rapid adsorption behavior following pseudo-second order kinetics as determined by nonlinear fitting. NH 2-ASNs and NH 2-MSNs exhibited significantly higher Cr(VI) adsorption capacities of 34.0 and 42.2 mg•g −1 and removal efficiencies of 61.9 and 76.8% than those of unfunctionalized ASNs and MSNs, respectively. The Langmuir model resulted in best fits to the adsorption isotherms of NH 2-ASns and nH 2-MSNs. The adsorption of Cr(VI) on NH 2-ASNs and NH 2-MSNs was an endothermic and spontaneous process according to the thermodynamic analyses of temperature-dependent adsorption isotherms. The removal efficiencies of NH 2-ASNs and NH 2-MSNs exhibited a moderate reduction of less than 25% of the maximum values after five regeneration cycles. Furthermore, NH 2-MSNs were also found to reduce adsorbed Cr(VI) into less harmful Cr(III).

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“…The high porosity, expansion and and contraction of structurally flexible MOFs provides different properties and applications viewpoints including structural characterization, crystal engineering, adsorption-separation applications of gas, [1] as well as the removal of pollutants such as dyes, [2][3][4] heavy metals, [5,6] toxic compounds, [7,8] and pesticides [9][10][11] from the environment. The high porosity, expansion and and contraction of structurally flexible MOFs provides different properties and applications viewpoints including structural characterization, crystal engineering, adsorption-separation applications of gas, [1] as well as the removal of pollutants such as dyes, [2][3][4] heavy metals, [5,6] toxic compounds, [7,8] and pesticides [9][10][11] from the environment.…”

Section: Introductionmentioning

confidence: 99%

“…Metal-organic frameworks (MOFs) are a new generation of ordered porous materials. The high porosity, expansion and and contraction of structurally flexible MOFs provides different properties and applications viewpoints including structural characterization, crystal engineering, adsorption-separation applications of gas, [1] as well as the removal of pollutants such as dyes, [2][3][4] heavy metals, [5,6] toxic compounds, [7,8] and pesticides [9][10][11] from the environment.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient removal of toxic lead ions from aqueous solutions using a new magnetic metal‐organic framework nanocomposite

Karimi

Masrouri

Karami

et al. 2019

J Chinese Chemical Soc

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A magnetic metal‐organic framework (MOF) nanocomposite was successfully prepared by a new and green strategy through reasonable design. Magnetic MOF of Fe3O4‐NHSO3H@HKUST‐1 nanocomposite use for removal of lead ions as an environmental pollutant. The experimental results indicated that the nano adsorbent of Fe3O4‐NHSO3H@HKUST‐1 can removed lead ions under optimum operational conditions. The dosage of the nanocomposite, pH of the sample solution, and contact time were obtained to be 10 mg, 7.0, and 90 min, respectively, while the initial concentration of Pb(II) ions of 400 mg/L was used. A kinetic study indicated that a pseudo‐second‐order model agreed well with the experimental data. The isotherm experiments revealed that the Langmuir model attained better fits to the equilibrium data than the Freundlich model. The maximum adsorption capacity of the adsorbent for the removal of lead under the optimum operational conditions of pH 7.0 and temperature 25°C was found to be 384.6 mg/g. The thermodynamic parameters indicate that the adsorption of lead is spontaneous and endothermic. The magnetic MOF nanocomposite could be recovered easily and reused many times without significant loss of its nano‐adsorbent activity. The proposed method is simple, eco‐friendly, low cost, and efficient in the removal of lead ions from aqueous solutions.

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Metal–organic frameworks for heavy metal removal from water

Cited by 840 publications

References 69 publications

Role of Nanomaterials in the Treatment of Wastewater: A Review

Role of Nanomaterials in the Treatment of Wastewater: A Review

A systematic study of hexavalent chromium adsorption and removal from aqueous environments using chemically functionalized amorphous and mesoporous silica nanoparticles

Highly efficient removal of toxic lead ions from aqueous solutions using a new magnetic metal‐organic framework nanocomposite

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