scholarly journals Facile preparation of amidoxime-functionalized Fe3O4@SiO2-g-PAMAM-AO magnetic composites for enhanced adsorption of Pb(ii) and Ni(ii) from aqueous solution

RSC Advances ◽  
2019 ◽  
Vol 9 (16) ◽  
pp. 9171-9179 ◽  
Author(s):  
Dai Yimin ◽  
Liu Danyang ◽  
Zou Jiaqi ◽  
Wang Shengyun ◽  
Zhou Yi
Keyword(s):  
Aqueous Solution ◽  
Magnetic Microspheres ◽  
Functional Monomer ◽  
Magnetic Composites ◽  
Facile Preparation ◽  
Enhanced Adsorption

In this paper, using amidoxime as a functional monomer, different generations of polyamidoxime dendrimer magnetic microspheres (Fe3O4@SiO2-g-PAMAM-AO) were fabricated to adsorb Pb2+ and Ni2+ in aqueous solution.

Facile preparation of amidoxime-functionalized fiber by microwave-assisted method for the enhanced adsorption of chromium(vi) from aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64665-64675 ◽  
Author(s):  
Sheng Deng ◽  
Guangshan Zhang ◽  
Yang Li ◽  
Yuan Dou ◽  
Peng Wang
Keyword(s):  
Aqueous Solution ◽  
Efficient Approach ◽  
Microwave Assisted ◽  
Highly Efficient ◽  
Chromium Vi ◽  
Adsorption Capacities ◽  
Facile Preparation ◽  
Enhanced Adsorption ◽  
Microwave Assisted Method

In this study, a facile and highly efficient approach, the microwave-assisted (MW-aid) method, was applied for the synthesis of amidoxime-functionalized fibrous adsorbent, which exhibited enhanced adsorption capacities for Cr(vi) in aqueous solution.

Facile preparation of rubidium ion-imprinted polymer by bulk polymerization for highly efficiency separation of rubidium ions from aqueous solution

2021 ◽  
Author(s):  
Zhiyong Zhou ◽  
Yulei Hu ◽  
Zhuo Wang ◽  
Hewei Zhang ◽  
Biing Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methacrylic Acid ◽  
Bulk Polymerization ◽  
Functional Monomer ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Selective Ligand ◽  
Ion Imprinted ◽  
Facile Preparation

A novel rubidium ion-imprinted polymer (Rb+-IIP) was successfully prepared by bulk polymerization with Rb+ ion as template ion, methacrylic acid (MAA) as functional monomer, 18-crown-6 (18C6) ether as selective ligand,...

Enhanced adsorption of cu(II) and Zn(II) from aqueous solution by polyethyleneimine modified straw hydrochar

2021 ◽  
pp. 146116
Author(s):  
Xinyue He ◽  
Tao Zhang ◽  
Qing Xue ◽  
Yalan Zhou ◽  
Hailong Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Enhanced Adsorption

Enhanced adsorption removal of methyl orange from aqueous solution by nanostructured proton-containing δ-MnO2

2015 ◽  
Vol 3 (10) ◽  
pp. 5674-5682 ◽  
Author(s):  
Yan Liu ◽  
Chao Luo ◽  
Jian Sun ◽  
Haizhen Li ◽  
Zebin Sun ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Solid State ◽  
Solid State Reaction ◽  
Proton Exchange ◽  
Precipitation Method ◽  
Homogeneous Precipitation ◽  
Adsorption Removal ◽  
Homogeneous Precipitation Method ◽  
Enhanced Adsorption

Two nanostructured proton-containing δ-MnO2 (H-δ-MnO2) materials were synthesized through proton exchange for K-containing δ-MnO2 (K-δ-MnO2) nanosheets and nanoparticles prepared by the hydrothermal homogeneous precipitation method and solid-state reaction.

scholarly journals Studies on Synthesis and Characterization of Fe3O4@SiO2@Ru Hybrid Magnetic Composites for Reusable Photocatalytic Application

2022 ◽  
Vol 2022 ◽  
pp. 1-18
Author(s):  
Avvaru Praveen Kumar ◽  
Dinesh Bilehal ◽  
Tegene Desalegn ◽  
Shalendra Kumar ◽  
Faheem Ahmed ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Organic Dyes ◽  
Research Work ◽  
Magnetic Microspheres ◽  
Visible Radiation ◽  
Magnetic Composites ◽  
Acid Media ◽  
Dye Pollutants ◽  
Bet Analysis

Degradation of dye pollutants by the photocatalytic process has been regarded as the most efficient green method for removal organic dyes from contaminated water. The current research work describes the synthesis of Fe3O4@SiO2@Ru hybrid magnetic composites (HMCs) and their photocatalytic degradation of two azo dye pollutants, methyl orange (MO) and methyl red (MR), under irradiation of visible light. The synthesis of Fe3O4@SiO2@Ru HMCs involves three stages, including synthesis of Fe3O4 magnetic microspheres (MMSs), followed by silica (SiO2) coating to get Fe3O4@SiO2 MMSs, and then incorporation of presynthesized Ru nanoparticles (~3 nm) onto the surface of Fe3O4@SiO2 HMCs. The synthesized HMCs were characterized by XRD, FTIR, TEM, EDS, XPS, BET analysis, UV-DRS, PL spectroscopy, and VSM to study the physical and chemical properties. Furthermore, the narrow band gap energy of the HMC photocatalyst is a significant parameter that provides high photocatalytic properties due to the high light adsorption. The photocatalytic activity of synthesized Fe3O4@SiO2@Ru HMCs was assessed by researching their ability to degrade the aqueous solution of MO and MR dyes under visible radiation, and the influence of various functional parameters on photocatalytic degradation has also been studied. The results indicate that the photocatalytic degradation of MO and MR dyes is more than 90%, and acid media favors better degradation. The probable mechanism of photodegradation of azo dyes by Fe3O4@SiO2@Ru HMC catalysts has been proposed. Furthermore, due to the strong ferromagnetic Fe3O4 core, HMCs were easily separated from the solution after the photocatalytic degradation process for reuse. Also, the photocatalytic activity after six cycles of use is greater than 90%, suggesting the stability of the synthesized Fe3O4@SiO2@Ru HMCs.

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