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Facile synthesis of hollow mesoporous MgO spheres via spray-drying with improved adsorption capacity for Pb(II) and Cd(II).
Environ Sci Pollut Res Int. 2019 Jun; 26(18):18825-18833.ES

Abstract

Spherical-like MgO nanostructures have been synthesized efficiently via spray-drying combined with calcination using magnesium acetate as magnesium source. The products were characterized by means of X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and the specific surface areas were calculated using the Brunauer-Emmett-Teller (BET) method. The obtained spherical-like MgO nanostructures exhibit uniform pore sizes (7.7 nm) and high specific surface areas (180 m2 g-1). The adsorption kinetics and isotherm data agree well with pseudo-second-order model and Langmuir model, indicating the monolayer chemisorption of heavy metal ions. The spherical-like MgO nanostructures exhibited high adsorption performance for Pb(II) and Cd(II) ions, and the maximum adsorption capacities were up to 5214 mg g-1 and 4187 mg g-1, respectively. These values are much higher than those reported MgO-based adsorbents. Moreover, in less than 10 min, Pb(II) and Cd(II) ions in solution can be almost removed, which means that the spherical-like MgO possesses a high adsorption rate. XRD and FTIR analysis revealed the adsorption mechanism of Pb(II) and Cd(II) ions on MgO, which was mainly due to hydroxyl functional groups and ion exchange between Mg and heavy metal ions on the surface of MgO. These favorable performances recommend that the synthesized spherical-like MgO nanostructures would be a potential adsorbent for rapid removal of heavy metal ions from wastewater.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Kuang M
School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
Shang Y
School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
Yang G
School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
Liu B
Institute of Research and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China. liu_micro@126.com.
Yang B
Institute of Research and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China. yangbin65@126.com.

MeSH

AdsorptionCadmiumChemistry Techniques, SyntheticKineticsLeadMagnesium OxideNanospheresSurface PropertiesWastewaterWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31065979

Citation

Kuang, Mengjie, et al. "Facile Synthesis of Hollow Mesoporous MgO Spheres Via Spray-drying With Improved Adsorption Capacity for Pb(II) and Cd(II)." Environmental Science and Pollution Research International, vol. 26, no. 18, 2019, pp. 18825-18833.
Kuang M, Shang Y, Yang G, et al. Facile synthesis of hollow mesoporous MgO spheres via spray-drying with improved adsorption capacity for Pb(II) and Cd(II). Environ Sci Pollut Res Int. 2019;26(18):18825-18833.
Kuang, M., Shang, Y., Yang, G., Liu, B., & Yang, B. (2019). Facile synthesis of hollow mesoporous MgO spheres via spray-drying with improved adsorption capacity for Pb(II) and Cd(II). Environmental Science and Pollution Research International, 26(18), 18825-18833. https://doi.org/10.1007/s11356-019-05277-w
Kuang M, et al. Facile Synthesis of Hollow Mesoporous MgO Spheres Via Spray-drying With Improved Adsorption Capacity for Pb(II) and Cd(II). Environ Sci Pollut Res Int. 2019;26(18):18825-18833. PubMed PMID: 31065979.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Facile synthesis of hollow mesoporous MgO spheres via spray-drying with improved adsorption capacity for Pb(II) and Cd(II). AU - Kuang,Mengjie, AU - Shang,Yisheng, AU - Yang,Gaoling, AU - Liu,Baixiong, AU - Yang,Bin, Y1 - 2019/05/07/ PY - 2018/12/28/received PY - 2019/04/25/accepted PY - 2019/04/18/revised PY - 2019/5/9/pubmed PY - 2019/8/16/medline PY - 2019/5/9/entrez KW - Adsorption KW - Heavy metal ions KW - Magnesium oxide KW - Nanostructures KW - Spherical-like MgO KW - Spray-drying SP - 18825 EP - 18833 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 26 IS - 18 N2 - Spherical-like MgO nanostructures have been synthesized efficiently via spray-drying combined with calcination using magnesium acetate as magnesium source. The products were characterized by means of X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and the specific surface areas were calculated using the Brunauer-Emmett-Teller (BET) method. The obtained spherical-like MgO nanostructures exhibit uniform pore sizes (7.7 nm) and high specific surface areas (180 m2 g-1). The adsorption kinetics and isotherm data agree well with pseudo-second-order model and Langmuir model, indicating the monolayer chemisorption of heavy metal ions. The spherical-like MgO nanostructures exhibited high adsorption performance for Pb(II) and Cd(II) ions, and the maximum adsorption capacities were up to 5214 mg g-1 and 4187 mg g-1, respectively. These values are much higher than those reported MgO-based adsorbents. Moreover, in less than 10 min, Pb(II) and Cd(II) ions in solution can be almost removed, which means that the spherical-like MgO possesses a high adsorption rate. XRD and FTIR analysis revealed the adsorption mechanism of Pb(II) and Cd(II) ions on MgO, which was mainly due to hydroxyl functional groups and ion exchange between Mg and heavy metal ions on the surface of MgO. These favorable performances recommend that the synthesized spherical-like MgO nanostructures would be a potential adsorbent for rapid removal of heavy metal ions from wastewater. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/31065979/Facile_synthesis_of_hollow_mesoporous_MgO_spheres_via_spray_drying_with_improved_adsorption_capacity_for_Pb_II__and_Cd_II__ DB - PRIME DP - Unbound Medicine ER -