Preparation of amino-functionalized CoFe2O4@SiO2 magnetic nanocomposites for potential application in absorbing heavy metal ions

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72479-72486 ◽  
Author(s):  
Chunrong Ren ◽  
Xingeng Ding ◽  
Huiqin Fu ◽  
Cheng Meng ◽  
Wenqi Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Shell Structure ◽  
Potential Application ◽  
Heavy Metal Ions ◽  
Magnetic Nanocomposites ◽  
Core Shell ◽  
High Adsorption ◽  
High Adsorption Capacity ◽  
Core Shell Structure

The magnetic CoFe2O4@SiO2–NH2 particles with core-shell structure are designed and synthesized. They have high adsorption capacity (170.829 mg g−1), high removal efficiency (96.93%) for heavy metals, and can be recycled easily.

Fe3O4/PANI/MnO2 core–shell hybrids as advanced adsorbents for heavy metal ions

2017 ◽  
Vol 5 (8) ◽  
pp. 4058-4066 ◽  
Author(s):  
Jian Zhang ◽  
Jie Han ◽  
Minggui Wang ◽  
Rong Guo
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Heavy Metal Ions ◽  
Core Shell ◽  
High Adsorption ◽  
Magnetic Adsorbents ◽  
Solution Route ◽  
High Adsorption Capacity

Multifunctional magnetic adsorbents of Fe3O4/PANI/MnO2 core–shell hybrids have been developed through a facile and economic solution route, which show high adsorption capacity toward heavy metal ions.

Mussel-inspired synthesis of polydopamine-functionalized calcium carbonate as reusable adsorbents for heavy metal ions

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47848-47852 ◽  
Author(s):  
Chengyong Li ◽  
Zhong-ji Qian ◽  
Chunxia Zhou ◽  
Weiming Su ◽  
Pengzhi Hong ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Calcium Carbonate ◽  
Chemical Modification ◽  
Heavy Metal Ions ◽  
High Efficiency ◽  
Low Cost ◽  
High Adsorption ◽  
High Adsorption Capacity ◽  
Adsorption Desorption ◽  
Multiple Adsorption

A new high-efficiency adsorbent (PDA-CaCO3) is fabricated via simple thermal calcination ostracean shells and chemical modification with dopamine. It can be easily regenerated by low-cost reagents, and exhibited high adsorption capacity after multiple adsorption–desorption cycles.

Investigation of Zn2+ heavy metal handling ability by macadamite activated by H3PO4

2019 ◽  
pp. 125-132
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Adsorption Capacity ◽  
Carbon Material ◽  
High Efficiency ◽  
High Adsorption ◽  
Research Results ◽  
Activating Agent ◽  
High Adsorption Capacity

Investigate the possibility of treating wastewater containing heavy metals Zn2+ with activated carbon material prepared from macadamia shell with chemical activating agent H3PO4, showing high efficiency of adsorption of Zn2+. The results of the study showed that activated carbon with H3PO4 activating agent has high adsorption capacity, capable of handling Zn2+ best at pH = 4.5, dosage 1.8 g/L and time is 120 minutes. . The results show similarities with other research results and are capable of treating wastewater containing heavy metals Zn2+.

scholarly journals Preparation of PVDF/Hyperbranched-Nano-Palygorskite Composite Membrane for Efficient Removal of Heavy Metal Ions

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 156 ◽  
Author(s):  
Xiaoye Zhang ◽  
Yingxi Qin ◽  
Guifang Zhang ◽  
Yiping Zhao ◽  
Chao Lv ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Composite Membrane ◽  
Heavy Metal Ions ◽  
Thermo Gravimetric Analysis ◽  
Composite Membranes ◽  
Gravimetric Analysis ◽  
High Adsorption ◽  
High Adsorption Capacity

In this work, three kinds of hyperbranched polyamidoamine-palygorskite (PAMAM-Pal) were designed and synthesized by grafting the first generation polyamidoamine (G1.0 PAMAM), G2.0 PAMAM and G3.0 PAMAM onto Pal surfaces, respectively. Then, these PAMAM-Pals were used as additives to prepare polyvinylidene fluoride (PVDF)/hyperbranched polyamidoamine-palygorskite bicomponent composite membranes. The structures of the composite membranes were characterized by Fourier transform infrared spectroscopy (FTIR), thermo gravimetric analysis (TEM), X-ray photoelectron spectroscopy (XPS), field-emission scanning electronmicroscopy (SEM), atomic force microscope (AFM) and Thermogravimetric analysis (TGA). The adsorption properties of composite membranes to heavy metal ions was studied, and the results found that the maximum adsorption capacities for Cu(II), Ni(II) and Cd(II) could reach 155.19 mg/g, 124.28 mg/g and 125.55 mg/g, respectively, for the PVDF/G3.0 PAMAM-Pal membrane, while only 23.70 mg/g, 17.74 mg/g and 14.87 mg/g could be obtained for unmodified membranes in the same conditions. The high adsorption capacity can be ascribed to the large number of amine-terminated groups, amide groups and carbonyl groups of the composite membrane. The above results indicated that the prepared composite membrane has a high adsorption capacity for heavy metal ions removal in water treatment.

Exchange coupled magnetic nanocomposites of Sm(Co1−xFex)5 / Fe3O4 with core/shell structure

2007 ◽  
Vol 141 (10) ◽  
pp. 541-544 ◽  
Author(s):  
Jung Hoon Hong ◽  
Wan Seop Kim ◽  
Jong In Lee ◽  
Nam Hwi Hur
Keyword(s):  
Shell Structure ◽  
Magnetic Nanocomposites ◽  
Core Shell ◽  
Core Shell Structure

Electrospun hematite nanofiber/mesoporous silica core/shell nanomaterials as an efficient adsorbent for heavy metals

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90516-90525 ◽  
Author(s):  
Shani Egodawatte ◽  
Katherine E. Greenstein ◽  
Ivy Vance ◽  
Edris Rivera ◽  
Nosang V. Myung ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Ions ◽  
High Surface ◽  
High Surface Area ◽  
Core Shell ◽  
Functionalized Nanomaterials ◽  
Silica Core ◽  
Efficient Adsorbent ◽  
Global Water

Functionalized nanomaterials hold tremendous promise for water treatment because their high surface area makes them ideal sorbents for pollutants like heavy metal ions that are pervasive in global water supplies.

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