Inorganic Chemicals Industry >
Aerosol-assisted synthesis of spherical magnesium oxide and its adsorption properties
Received date: 2019-07-19
Online published: 2020-02-26
Spherical magnesium oxide（MgO） was prepared by aerosol-assisted method using MgCl2·6H2O as the magnesium source and urea as the precipitant.Precursor particles and MgO samples synthesized at different reaction temperatures were studied by means of X-ray diffraction（XRD）,scanning electron microscopy（SEM）,infrared spectroscopy（IR） and nitrogen adsorption-desorption.The experimental results indicated that the prepared spherical MgO had a specific surface area of 36 m 2/g,an average pore diameter of 34 nm and a total pore volume of 0.26 cm 3/g.The adsorption of Congo red accorded with pseudo-secondary kinetics and reached adsorption equilibrium within 5 min.The adsorption isotherm conformed to the Langmuir model and the saturated adsorption capacity was 764.91 mg/g.
Key words： spherical magnesium oxide; aerosol; adsorption
Zhengze Chai , Junwei Ye , Qizhe Tian , Lei Shi , Guiling Ning . Aerosol-assisted synthesis of spherical magnesium oxide and its adsorption properties[J]. Inorganic Chemicals Industry, 2020 , 52(1) : 39 -43 . DOI: 10.11962/1006-4990.2019-0159
| [1] | 石瑾, 赵有璟, 王敏 . 石灰法制备氢氧化镁工艺研究[J]. 无机盐工业, 2017,49(9):45-47. |
| [2] | Yan W, Chen J F, Li N , et al. Preparation and characterization of porous MgO-Al2O3 refractory aggregates using an in-situ decomposition pore-forming technique[J]. Ceramics International, 2015,41:515-520. |
| [3] | Moussavi G, Mahmoudi M . Removal of azo and anthraquinone reactive dyes from industrial wastewaters using MgO nanoparticles[J]. Journal of Hazardous Materials, 2009,168(2/3):806-812. |
| [4] | Zhang M, Gao B, Yao Y , et al. Synjournal of porous MgO-biochar nanocomposites for removal of phosphate and nitrate from aqueous solutions[J]. Chemical Engineering Journal, 2012,210:26-32. |
| [5] | Cai Y, Li C, Wu D , et al. Highly active MgO nanoparticles for simultaneous bacterial inactivation and heavy metal removal from aqueous solution[J]. Chemical Engineering Journal, 2017,312:158-166. |
| [6] | Podder S, Chanda D, Mukhopadhyay A K , et al. Effect of morphology and concentration on crossover between antioxidant and pro-oxidant activity of MgO nanostructures[J]. Inorganic Chemistry, 2018,57:12727-12739. |
| [7] | Mashayekh-Salehi A, Moussavi G, Yaghmaeian K . Preparation,characterization and catalytic activity of a novel mesoporous nanocrystalline MgO nanoparticle for ozonation of acetaminophen as an emerging water contaminant[J]. Chemical Engineering Journal, 2017,310:157-169. |
| [8] | Tian G, Wang W, Zong L , et al. MgO/palygorskite adsorbent derived from natural Mg-rich brine and palygorskite for high-efficient removal of Cd(Ⅱ) and Zn(Ⅱ) ions[J]. Journal of Environmental Chemical Engineering, 2017,5(1):1027-1036. |
| [9] | Gao P, Tian X, Yang C , et al. Fabrication,performance and mechanism of MgO meso-/macroporous nanostructures for simultaneous removal of As（Ⅲ） and F in a groundwater system[J]. Environmental Science:Nano, 2016,3(6):1416-1424. |
| [10] | Makhluf S, Dror R, Nitzan Y , et al. Microwave-assisted synjournal of nanocrystalline MgO and its use as a bacteriocide[J]. Advanced Functional Materials, 2005,15(10):1708-1715. |
| [11] | Shen Z, Zhang J, Hou D , et al. Synjournal of MgO-coated corncob biochar and its application in lead stabilization in a soil washing residue[J]. Environment International, 2019,122:357-362. |
| [12] | Almasian A, Najafi F, Maleknia L , et al. Mesoporous MgO/PPG hybrid nanofibers:synjournal,optimization,characterization and heavy metal removal property[J]. New Journal of Chemistry, 2018,42(3):2013-2029. |
| [13] | Debecker D P, Le Bras S, Boissière C , et al. Aerosol processing:a wind of innovation in the field of advanced heterogeneous catalysts[J]. Chem.Soc.Rev., 2018,47(11):4112-4155. |
/
| 〈 |
|
〉 |