Superb adsorption capacity of hierarchical calcined Ni/Mg/Al layered double hydroxides for Congo red and Cr(VI) ions

Lei, Chunsheng; Zhu, Xiaofeng; Zhu, Bicheng; Jiang, Chuanjia; Yao, Le; Wang, Yuanyuan

doi:10.1016/j.jhazmat.2016.09.070

Cited by 443 publications

(134 citation statements)

References 61 publications

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“…The XPS spectra of O1s in Figure c contains three peaks (533.4, 531.7 and 530.3 eV) belonging to C−O, ‐OH and Fe−O, respectively . The relative contents of the above three peaks are 21.55%, 32.56% and 45.89% before adsorption.…”

Section: Resultsmentioning

confidence: 99%

Improved Removal of Cr(VI) using Fe₃O₄/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Lin

Tian

et al. 2019

ChemistrySelect

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The development of high performance magnetic nanomaterials has a good application prospect in wastewater treatment. Herein, Fe3O4/C nanocomposites was synthesized by eco‐friendly hydrolysis‐calcination method using potassium fulvic acid (FA−K) and FeCl3⋅6H2O as raw materials. The morphology of Fe3O4/C nanocomposites exhibited a loose pore structure with uniform size (a diameter ∼ 27 nm). The prepared Fe3O4/C nanocomposites possessed excellent dispersibility and magnetic properties in aqueous solution. The removal efficiency and maximum adsorption capacity of Fe3O4/C nanocomposites were 98% and 64.0 mg g−1, respectively. Moreover, it was confirmed that the adsorption mechanism of Cr(VI) contains electrostatic attraction and redox reaction. In this work, we provide a convenient means for manufacturing Fe3O4/C nanocomposites, and prove that FA−K is a cheap carbon source for manufacturing Fe3O4/C nanocomposites, which makes Fe3O4/C nanocomposites have potential application value in the effective adsorption of Cr(VI).

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Section: Resultsmentioning

confidence: 99%

Improved Removal of Cr(VI) using Fe₃O₄/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Lin

Tian

et al. 2019

ChemistrySelect

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“…The four major peaks of all the three LDHs are located at approximately 11.5 , 22.9 , 34.6 , and 39.0 , which can be indexed to the (003), (006), (012), and (015) planes of Mg-Al hydrotalcite (JCPDS 35-0965). 37 The positions of the key peaks of all three materials (2 : 1, 3 : 1, and 4 : 1 Mg-Al-NO 3 LDH) showed no notable shi and no additional phases were observed, indicating that the samples prepared did indeed contain Mg-Al-NO 3 LDH materials. The power XRD pattern intensities of the samples shown in Fig.…”

Section: Characterization Of the Ldh Sorbentsmentioning

confidence: 89%

Application of hydrotalcite in soil immobilization of iodate (IO₃⁻)

et al. 2018

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Radioactive iodine is quite mobile in soil and poses threats to human health and the ecosystem. Many materials, including layered double hydroxides (LDH), have been synthesized to successfully capture iodine from aqueous environments. However, limited information is available on the application of LDH in soil to immobilize iodine species. In the present study, the feasibility of using Mg-Al-NO 3 LDH for retention of soil iodate (IO 3 À ) in both batch and column systems was analyzed. , which was 28.6 times higher than soil without LDH added. Moreover, the eluted iodate percentage was only 12.9% in the soil column with the 1.33% Mg 2 -Al-NO 3 LDH addition, whereas almost 43.5%iodate was washed out in the soil column without LDH addition. The results suggested that Mg 2 -Al-NO 3 LDH could effectively immobilize iodate in soil without obvious interference.

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“…2) and Freundlich (Eq. 3) models give the best fit [36][37][38][39][40][41][42], hence in this work only the two models were used to interpret the data. where q e is the equilibrium dye concentration on the adsorbent (mg g −1 ), c e is the equilibrium dye concentration in solution (mg dm −3 ), q max is the monolayer capacity of the adsorbent (mg g −1 ), and b is the Langmuir adsorption constant (dm 3 mg −1 ).…”

Section: Removal Of Phenol and Congo Redmentioning

confidence: 99%

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

Lorenc-Grabowska

Rutkowski

2018

J Mater Cycles Waste Manag

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In this work it was shown that polymers can be recycled into a promising adsorbent for organic dyes and phenols waste removal. For this, a series of activated carbons (ACs) were produced from mixture of ferrocene or titanium acetylacetonate with poly(furfuryl alcohol) (PFA) by steam activation. The introduction of ferrocene as Fe precursor was found to be an efficient catalyst in mesoporosity development during carbonization and subsequent steam activation at 850 °C, whereas the polymer based only and titanium-doped ACs are typically microporous. The porous structure parameters were determined from nitrogen adsorption isotherms measured at 77 K. Scanning electron microscopy was applied to monitor the metal distribution of metal-loaded char and the surface morphology of activated carbons. The adsorption capacity was found to be dependent mainly on pore size distribution. In the case of phenol adsorption, the adsorption was defined by volume of pore with size 0.8-1.4 nm; whereas, for Congo red best fit was observed for volume of pore with size 2-5 nm.

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Superb adsorption capacity of hierarchical calcined Ni/Mg/Al layered double hydroxides for Congo red and Cr(VI) ions

Cited by 443 publications

References 61 publications

Improved Removal of Cr(VI) using Fe₃O₄/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Improved Removal of Cr(VI) using Fe₃O₄/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Application of hydrotalcite in soil immobilization of iodate (IO₃⁻)

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

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Superb adsorption capacity of hierarchical calcined Ni/Mg/Al layered double hydroxides for Congo red and Cr(VI) ions

Cited by 443 publications

References 61 publications

Improved Removal of Cr(VI) using Fe3O4/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Improved Removal of Cr(VI) using Fe3O4/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Application of hydrotalcite in soil immobilization of iodate (IO3−)

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

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Product

Resources

About

Improved Removal of Cr(VI) using Fe₃O₄/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Improved Removal of Cr(VI) using Fe₃O₄/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

Application of hydrotalcite in soil immobilization of iodate (IO₃⁻)