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Simultaneous cationic Cu (II)-anionic Sb (III) removal by NH2-Fe3O4-NTA core-shell magnetic nanoparticle sorbents synthesized via a facile one-pot approach
Hao, Haotian; Liu, Guifeng; Wang, Yili; Shi, Baoyou; Han, Kun; Zhuang, Yuan; Kong, Yan
2019-01-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume362Pages:246-257
AbstractIn this study, a regenerable magnetic core-shell nanoparticles NH2-Fe3O4-NTA which include 3-aminopropyl-triethoxysilane (APTES) and nitrilotriacetic acid (NTA) crosslinked to Fe3O4 was developed by one-pot method for simultaneous removal of cationic and anionic metals. Another nanocomposite NH2-Fe3O4-NTA(II) was prepared by multi-step method for comparison. NH2-Fe3O4-NTA had positive zeta potential values of 35.1-0.8 mV at pH 1.8-11.0, with the saturation magnetization and surface area up to 40.56 emu/g and 56.94 m(2)/g, respectively. The maximum sorption capacities of NH2-Fe3O4-NTA for cationic Cu (II) and anionic Sb (III) were 55.56 and 51.07 mg/L, respectively, which were superior to that of NH2-Fe3O4-NTA(II). Based on screening in terms of characterization and metal sorption capacity, NH2-Fe3O4-NTA with a feasible synthesis scheme was chosen for further evaluation. The Cu (II) removal by NH2-Fe3O4-NTA was favored with increasing pH, while the Sb (III) removal preferred low pH (2-3). Simultaneous sorption of Cu (II) and Sb (III) exhibited same removal performance with the sole sorption under high dosage ( > 1 g/L). In real wastewater applications of NH2-Fe3O4-NTA, multiple metals in actual wastewater could be removed to well below the regulation levels. Nonspecific electrostatic interactions, inner-sphere complexation, ligand exchange, chelation and coordination complexation were responsible for Cu (II) and Sb (III) removal.
Department中国科学院饮用水科学与技术重点实验室
KeywordMagnetic nanoparticles Core-shell NTA Heavy metal decontamination Simultaneous removal
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43522
Collection中国科学院饮用水科学与技术重点实验室
Affiliation1.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing Key Lab Source Control Technol Water Poll, 35 Tsinghua East Rd, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, 18 Shuangqing Rd, Beijing 100085, Peoples R China
3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hao, Haotian,Liu, Guifeng,Wang, Yili,et al. Simultaneous cationic Cu (II)-anionic Sb (III) removal by NH2-Fe3O4-NTA core-shell magnetic nanoparticle sorbents synthesized via a facile one-pot approach[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,362:246-257.
APA Hao, Haotian.,Liu, Guifeng.,Wang, Yili.,Shi, Baoyou.,Han, Kun.,...&Kong, Yan.(2019).Simultaneous cationic Cu (II)-anionic Sb (III) removal by NH2-Fe3O4-NTA core-shell magnetic nanoparticle sorbents synthesized via a facile one-pot approach.JOURNAL OF HAZARDOUS MATERIALS,362,246-257.
MLA Hao, Haotian,et al."Simultaneous cationic Cu (II)-anionic Sb (III) removal by NH2-Fe3O4-NTA core-shell magnetic nanoparticle sorbents synthesized via a facile one-pot approach".JOURNAL OF HAZARDOUS MATERIALS 362(2019):246-257.
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