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One-pot synthesis of layered double hydroxide hollow nanospheres with ultrafast removal efficiency for heavy metal ions and organic contaminants

Title
One-pot synthesis of layered double hydroxide hollow nanospheres with ultrafast removal efficiency for heavy metal ions and organic contaminants
Authors
Mubarak, MahfuzaJeon, HyokyungIslam, Md. ShahinulYoon, CheolhoBae, Jong-SeongHwang, Seong-JuChoi, Won SanLee, Ha-Jin
Ewha Authors
황성주이하진
SCOPUS Author ID
황성주scopus; 이하진scopus
Issue Date
2018
Journal Title
CHEMOSPHERE
ISSN
0045-6535JCR Link

1879-1298JCR Link
Citation
CHEMOSPHERE vol. 201, pp. 676 - 686
Keywords
Layered double hydroxidesNanosphereAdsorptionHeavy metal ionsCatalyst
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Herein, Mg/Fe layered double hydroxide (MF-LDH) hollow nanospheres were successfully prepared by a one-step thermal method. After the thermal treatment of MF-LDH nanospheres at 400 degrees C, the MF-LDH was converted into the corresponding oxide, Mg/Fe layered double oxide (MF-LDO), which maintained the hollow nanosphere structure. The MF-LDO hollow nanospheres exhibited excellent adsorption efficiency for both As(V) and Cr(VI), showing 99% removal within 5 min and providing maximum removal capacities of 178.6 mg g(-1) [As(VI)] and 148.7 mg g(-1) [Cr(VI)]. Moreover, it met the maximum contaminant level requirements recommended by World Health Organization (WHO); 10 ppm for As(V) and 50 ppm for Cr(VI) in 10 and 20 min, respectively. Furthermore, Au nanoparticles were successfully introduced in the MF-LDO hollow nanospheres, and the products showed a conversion rate of 100% for the reduction of 4-nitrophenol into 4-aminophenol within 5 min. It is believed that these excellent and versatile abilities integrated with a facile synthetic strategy will facilitate the practical application of this material in cost-effective wastewater purification. (C) 2018 Elsevier Ltd. All rights reserved.
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DOI
10.1016/j.chemosphere.2018.03.046
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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