A new hydrotalcite-like absorbent FeMnMg-LDH and its adsorption capacity for Pb 2+ ions in water
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Abstract
Abstract A new hydrotalcite-like material layered double hydroxide (FeMnMg-LDH) with potentials used as adsorbent was synthesized based on a co-precipitation method. The Fe/Mn/Mg molar ratio in its crystal structure is 1:1:2. Well lamellar structure of the synthesized FeMnMg-LDH has been proved by its transmission electron microscope (TEM) images and the diffraction peaks are similar to the characteristic peaks of typical LDHs. Its adsorption characteristics for heavy metals, taking Pb2 + as an example, were examined in this paper. The maximum Pb2 + adsorption capacity of FeMnMg-LDH was about 421.42 mg/g at 25 °C, which is much higher than those of the most other similar kind of absorbents. In addition, it could keep a Pb2 + removal efficiency higher than 97% from aqueous solution at a wide pH range (pH 3–6). Thermodynamic parameters ΔH0, ΔS0 and ΔG0 have been calculated. Positive value of ΔH and negative value of ΔG demonstrate an endothermic and spontaneous process of Pb2 + adsorption on the FeMnMg-LDH sample. The adsorption mechanisms mainly involve surface-induced precipitation and ion exchange. The coexisting divalent cations could compete with Pb2 + ions for the adsorption following a competing ability of Cu2 + > Cd2 + > Mg2 + > Ca2 +. The results suggested that the synthesized FeMnMg-LDH material could be served as a potential material for the remediation of heavy metal contamination in water.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Adsorption and biosorption for pollutant removal · Phosphorus and nutrient management
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
Show source-provided references
1. Bionanocomposites based on alginate-zein/layered double hydroxide materials as drug delivery systems10.1039/c0jm01211d ↗
2. A study of a number of mixed transition metal oxide spinels using X-ray photoelectron spectroscopy10.1016/0169-4332(89)90977-X ↗
3. X-ray photoelectron spectroscopic studies on ZnS: MnF2 phosphors10.1143/JJAP.15.305 ↗
4. Comparative study of Mg/M(III) (M=Al, Ga, In) layered double hydroxides obtained by coprecipitation and the sol-gel method10.1006/jssc.2002.9655 ↗
5. One-pot hydrothermal synthesis of thrust spherical Mg–Al layered double hydroxides/MnO2 and adsorption for Pb(II) from aqueous solutions10.1016/j.jece.2015.05.023 ↗
6. Recent progress in the synthesis and application of organically modified hydrotalcites10.1524/zkri.2009.1153 ↗
7. Studies on Mg/Fe hydrotalcite-likecompound (HTlc): I. Removal of inorganic selenite (SeO32−) from aqueous medium10.1006/jcis.2002.8319 ↗
8. Effective removal of Pb(II) using magnetic Co0.6Fe2.4O4 micro-particlesas the adsorbent: synthesis and study on the kinetic and thermodynamic behaviors for its adsorption10.1016/j.colsurfa.2015.01.029 ↗
9. Structural aspects of layered double hydroxides
10. Evaluation of boron removal from water by hydrotalcite-like compounds10.1016/j.chemosphere.2005.04.009 ↗
11. Thermal behaviour of Ni–Mn layered double hydroxide and characterization of formed oxides10.1016/S1293-2558(03)00129-8 ↗
12. Fu · 2010
13. Removal of Cu(II), Ni(II), and Co(II) from aqueous solutions using layered double hydroxide intercalated with EDTA10.3103/S1063455X11050031 ↗
14. Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid, sorbate and sorbent comparative studies10.1016/j.cej.2014.05.132 ↗
15. Cu(II), Pb(II) and Cd(II) sorption on different layered double hydroxides. A kinetic and thermodynamic study and competing factors10.1016/j.cej.2015.01.094 ↗
16. A noblemetal-free catalyst derived from Ni-Al hydrotalcite for hydrogen generation from N2H4-H2O decomposition10.1002/anie.201201737 ↗
17. Helfferich · 1962 · 166
18. IR characteristics of hydrotalcite-like compounds10.1007/BF00348744 ↗
19. Pseudo-second order model for sorption processes10.1016/S0032-9592(98)00112-5 ↗
20. A new, low-cost adsorbent: preparation, characterization, and adsorption behavior of Pb(II) and Cu(II)10.1016/j.jcis.2014.12.099 ↗
21. Sorption of Pb(II) on Mg-Fe layered double hydroxide10.1002/cjoc.200990333 ↗
22. Sorption of lead ion by layered double hydroxide intercalated with diethylenetriaminepentaacetic acid10.1016/j.colsurfa.2010.05.012 ↗
23. Sorption of metal cations on layered double hydroxides10.1016/j.colsurfa.2013.05.006 ↗
24. Deintercalation of carbonate ions from carbonatetype layered double hydroxides (LDHs) using acid–alcohol mixed solutions10.1016/j.clay.2011.07.017 ↗
25. X-ray photoelectron spectroscopic studies of iron oxides10.1021/ac50019a016 ↗
26. A study of the core level electrons in iron and its 3 oxides by means of x-ray photoelectron-spectroscopy10.1088/0022-3727/16/5/005 ↗
27. Comments on “factors influencing the removal of divalent cations by hydroxyapatite”10.1016/j.jhazmat.2008.06.044 ↗
28. Water decontamination via the removal of Pb (II) using a new generation of highly energetic surface nano-material: Co2+Mo6+ LDH10.1016/j.jcis.2015.08.060 ↗
29. X-ray photoelectron study of surface compounds formed during flotation of minerals10.1002/sia.740020503 ↗
30. Mn–Fe layered double hydroxides for adsorption of As(III) and As(V)
31. Reactions of Cu2+ and Pb2+ with Mg/Al layered double hydroxide10.1016/j.clay.2006.12.006 ↗
32. Adsorption of Cu2+, Cd2+ and Pb2+ ions by layered double hydroxides intercalated with the chelating agents diethylenetriaminepentaacetate and meso-2,3-dimercaptosuccinate10.1016/j.clay.2008.07.020 ↗
33. Two-dimensional chemical-state plot for lead using XPS10.1016/0368-2048(82)85043-3 ↗
34. EDTA modified LDHs as Cu2+ scavengers: removal kinetics and sorbent stability10.1016/j.jcis.2008.11.045 ↗
35. Layered double hydroxide as novel antibacterial drug delivery system10.1016/j.jpcs.2009.12.066 ↗
36. Hybrid CaAl-SDS-LDH: preparation, structure and intercalation by sodium dodecyl sulfate into tricalcium aluminate, Chinese
37. Removal of humic substances by layered double hydroxide containing iron10.1016/S0043-1354(99)00295-X ↗
38. Catalytic performance of layered double hydroxides Co-Mn-Al for ozonation of organic pollutants in water10.1016/S1872-2067(11)60392-6 ↗
39. XPS studies of solvated metal atom dispersed (SMAD) catalysts. Evidence for layered cobalt-manganese particles on alumina and silica10.1021/ja00003a019 ↗
40. Line broadening in the PXRD patterns of layered hydroxides: the relative effects of crystallite size and structural disorder10.1007/BF02708774 ↗
41. Synthesis and characterization of Zn/Al and Pt/Zn/Al layered double hydroxides obtained by the sol–gel method10.1016/j.micromeso.2004.12.015 ↗
42. Transformation of alunite residuals into layered double hydroxides and oxides for adsorption of acid red G dye10.1016/j.clay.2012.08.001 ↗
43. Mistakes and inconsistencies regarding adsorption of contaminants from aqueous solutions: a critical review10.1016/j.watres.2017.04.014 ↗
44. Amino acids-intercalated Mg/Al layered double hydroxides as dual-electronic adsorbent for effective removal of cationic and oxyanionic metal ions10.1016/j.seppur.2017.09.060 ↗
45. Effects of exchanged surfactant cations on the pore structure and adsorption characteristics of montmorillonite10.1016/j.jcis.2004.07.009 ↗
46. Advances in water pollution research: removal of biologically resistant pollutant from waste water by adsorption
47. Competitive intercalation of sulfonates into layered double hydroxides (LDHs): the key role of hydrophobic interactions10.1021/jp0683723 ↗
48. Surface charging of layered double hydroxides during dynamic interactions of anions at the interfaces10.1016/j.jcis.2008.06.062 ↗
49. Nano-gold catalysis in fine chemical synthesis10.1021/cr200260m ↗
50. Adsorption behavior of thiophene fromaqueous solution on carbonate- and dodecylsulfate-intercalated ZnAl layered double hydroxides10.1021/ie201021k ↗
51. The adsorption of Pb(II) on Mg2Al layered double hydroxide10.1016/j.cej.2011.03.082 ↗
52. Hierarchical nanocomposites derived from nanocarbons and layered double hydroxides-properties, synthesis, and applications10.1002/adfm.201102222 ↗
53. Selective oxidation of biorenewable glycerol with molecular oxygen over Cu-containing layered double hydroxide-based catalysts10.1039/c0cy00018c ↗
54. Preparation and functionality of clay containing films10.1039/c1jm11479d ↗
55. A novel absorbent of Nano-Fe loaded biomass char and its enhanced adsorption capacity for phosphate in water10.1155/2013/649868 ↗
56. Equilibrium and kinetic studies of phosphate adsorption onto corn straw char supported nano ferric oxide composite10.1166/sam.2015.2397 ↗