SYNTHESIS OF MAGNETIC NANOPARTICLES FROM SPENT PICKING LIQUORS  IN AQUEOUS SATURATED SOLUTION OF CALCIUM HYDROXIDE

Spent pickling liquor is a considered hazardous waste because of its very high level of acidity and high metal concentration, and the conventional neutralization method regenerates an excessive quantity of sludge that poses a serious problem concerning to the landfill disposal and risk of ground water contamination. Therefore, recovery of spent pickling liquor is necessary. Several approaches have been investigated for spent pickling liquor recovery, but they are generally costly and lead to produce various iron salts or oxides which have a limited value. In the present study, we explore the potential of using spent pickling liquor as iron precursor for the synthesis of magnetic nanoparticles. Here, Fe3O4 nanoparticles were prepared easily by oxidation-precipitation from spent hydrochloride acid pickling liquors in aqueous saturated solution of calcium hydroxide at room temperature, in the air, and under suitable speed of rotation. The FT-IR, XRD and TEM results shown that monodisperse Fe3O4 nanoparticles in the size range of 10-25 nm were obtained, with a high level of crystallinity. The BET surface area was about 46 m2 g-1. The synthesized Fe3O4 nanoparticles exhibited the superparamagnetic behavior with relatively high saturation magnetization, Ms = 73 emu/g. The synthesis procedure of magnetic nanoparticles revealed here will provide a new possibility for spent pickling liquors recovery more effectively. For citation: Vu Minh X., Le Ha T. T., Pham Lan T., Pham Nam H., Le Huong T. M., Le Lu T. Nguyen Dung T. Synthesis of magnetic nanoparticles from spent picking liquors in aqueous saturated solution of calcium hydroxide. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 9-10. P. 59-63

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Magnetic Nanoparticles Derivatized with Dual Functional Groups for Environmental Applications

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.148-149.949 ◽

2010 ◽

Vol 148-149 ◽

pp. 949-952

Author(s):

Hai Bo He ◽

Qing Zhong Guo

Keyword(s):

Magnetic Nanoparticles ◽

Environmental Remediation ◽

Infrared Spectrometry ◽

X Ray Diffraction ◽

Water Contact ◽

Dual Functional ◽

New Material ◽

Ft Ir ◽

Contact Angle Analysis ◽

Effective Sorbent

In this study, the magnetic nanoparticles derivatized with dual functional moieties of dodecyl and mercapto were prepared, which characterized by X-ray diffraction (XRD), scanning electron microscope(SEM), surface area and pore size determination, fourier transform infrared spectrometry (FT-IR) and water contact angle analysis. The new material was proved to be an effective sorbent for environmental remediation.

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A Comparative Study on The Adsorption Behavior of Congo Red on to ZnAl and ZnCr Layered Double Hydroxides

The Journal of Pure and Applied Chemistry Research ◽

10.21776/ub.jpacr.2020.009.02.519 ◽

2020 ◽

Vol 9 (2) ◽

pp. 108-116

Author(s):

Tarmizi Taher ◽

◽

Nyanyu Ummu Hani ◽

Neza Rahayu Palapa ◽

Risfidian Mohadi ◽

...

Keyword(s):

Experimental Data ◽

Surface Area ◽

Adsorption Kinetics ◽

Layered Double Hydroxides ◽

Congo Red ◽

Adsorption Process ◽

Bet Surface Area ◽

Pseudo Second Order ◽

Ft Ir ◽

Double Hydroxides

In this work, two synthetic layered double hydroxides (LDH) consists of Zn2+ as M2+ cation with different M3+ cation, i.e., Al3+ and Cr3+ were used as an adsorbent for Congo Red removal aqueous solution. Both Zn-Al and Zn-Cr LDH were characterized by X-ray diffraction, FT-IR, and BET surface area analyzer. The effect of contact time, initial dye concentration, and temperature were evaluated in a batch technique in order to investigate the characteristic of Congo Red adsorption onto both adsorbents. The experimental data were assessed according to the parameter of adsorption kinetics, isotherm, and thermodynamics. The results of LDH characterization showed that Zn-Al LDH has a higher interlayer distance than Zn-Cr LDH, although Zn-Cr LDH has a higher surface area. The FT-IR analysis indicated the interlayer space of both Zn-Cr and Zn-Al LDH was dominated by CO32- as the interlayer anion species. The adsorption kinetics study of Congo Red on both LDH revealed that the adsorption process followed the pseudo-second-order model. For the adsorption isotherm, the experimental data fit well with the Freundlich model rather than the Langmuir model. The thermodynamic study indicated that the adsorption process that occurred on both adsorbents was spontaneous with exothermic nature.

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Application of Magnetic Nanoparticles with Structure of Core-shell, as Bactericidal

Immunology and Inflammation Diseases Therapy ◽

10.31579/2637-8876/023 ◽

2018 ◽

Vol 2 (1) ◽

pp. 01-04

Author(s):

Mansour Binandeh

Keyword(s):

Magnetic Nanoparticles ◽

Pathogenic Bacteria ◽

Antibacterial Properties ◽

Correlation Method ◽

Core Shell ◽

Ft Ir ◽

Chemical Correlation ◽

Ir Analysis ◽

The Magnetic Field

Initially, magnetic nanoparticles (MNP) Fe3O4 are synthesized by a chemical correlation method and its core / shell structure is detected using SEM, FT-IR analysis. The purpose of this production was to use the nanoparticle performance level in the absorption of antibiotics, namely, ampicillin (amp). Absorption sampling was analyzed by UV-Vis spectrophotometer and the results indicate that the absorbance of the ampere increases to 85%. The bond between these two is electrostatic bonding, which was confirmed by EDX analysis. Ultimately, this compound was used for the antibacterial process. In this case, the MNP-amp compound was added in a natural amount of 20 μl a bacterial culture pattern overnight (In-vitro). The results showed that 95% of the bacteria were killed (confirmation of antibacterial properties of MNP). Therefore, it can be transmitted intentionally by controlling the magnetic field into living cells for the destruction of pathogenic bacteria.

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Shape-controlled synthesis of magnetic Fe3O4 nanoparticles with different iron precursors and capping agents

RSC Advances ◽

10.1039/c8ra02909a ◽

2018 ◽

Vol 8 (41) ◽

pp. 22917-22923 ◽

Cited By ~ 26

Author(s):

Hira Fatima ◽

Dae-Won Lee ◽

Hyun Joong Yun ◽

Kyo-Seon Kim

Keyword(s):

Magnetic Nanoparticles ◽

Fe3o4 Nanoparticles ◽

Controlled Synthesis ◽

Capping Agents ◽

Modified Method ◽

Magnetic Fe3o4 Nanoparticles ◽

Different Shapes ◽

Shape Controlled ◽

Magnetic Fe3o4

This paper describes a modified method to prepare monodisperse Fe3O4 magnetic nanoparticles with different shapes (cube, octahedron, and sphere).

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An approach for the efficient immobilization of 79Se using Fe-OOH modified GMZ bentonite

Radiochimica Acta ◽

10.1515/ract-2019-3151 ◽

2020 ◽

Vol 108 (2) ◽

pp. 113-126

Author(s):

Junqiang Yang ◽

Keliang Shi ◽

Xuejie Sun ◽

Xiaoqing Gao ◽

Peng Zhang ◽

...

Keyword(s):

Low Cost ◽

High Mobility ◽

Synthesis Process ◽

Gmz Bentonite ◽

Filling Material ◽

Xps Spectra ◽

Ft Ir ◽

High Level ◽

Critical Consideration ◽

Formation Of Complexes

AbstractBecause of high mobility, the immobilization of long-lived fission product 79Se (often existed as 79Se(IV) and 79Se(VI) anions) is a critical consideration in the repository of high-level radioactive waste. In this work, a Fe-OOH modified bentonite (Fe-OOH-bent) was synthesized as a potential filling material in the repository site for effective adsorption and present the migration of different species of 79Se. The adsorbent was characterized using FT-IR, XRD, XFS, zeta potential and BET to clarify its physical properties, compositions and structures. A good thermal and radiation stabilities of Fe-OOH-bent was confirmed by its stable uptake ratio for Se(IV) and Se(VI) compared to original samples. The batch experimental results show that Se(IV) and Se(VI) can be efficiently removed from aqueous by Fe-OOH-bent within 60 min with maximum adsorption capacities of 68.45 mg/g for Se(IV) and 40.47 mg/g for Se(VI) in the optimal conditions, indicating its high potential application in consideration of its simple synthesis process, low cost and high adsorption capacity in view of immobilization of 79Se. The surface species and variation of oxide state of Fe as well as Se(IV) and Se(VI) onto Fe-OOH-bent were investigated by XPS analysis. The values of relative area of Se(IV)–O and Se(VI)–O in XPS spectra followed the same tendency as their adsorption ratio with the variation of system pH, suggesting that the formation of complexes between selenium species and Fe-OOH-bent surface.

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Functional Supramolecular of Inclusion Complex of Herbicide Fluroxypyr with HPβCD

Polymers ◽

10.3390/polym10121294 ◽

2018 ◽

Vol 10 (12) ◽

pp. 1294 ◽

Cited By ~ 6

Author(s):

Shuang Gao ◽

Chao Bie ◽

Yanyan Liu ◽

Tianyu Zhang ◽

Ying Fu ◽

...

Keyword(s):

Thermal Stability ◽

Inclusion Complex ◽

Solution Method ◽

Water Solubility ◽

Herbicidal Activity ◽

Saturated Solution ◽

Phase Solubility ◽

Bioactivity Assay ◽

Ft Ir ◽

Tga Analysis

In this study, hydroxypropyl-β-cyclodextrin (HPβCD) was used to form an inclusion complex with fluroxypyr to enhance water solubility and thermal stability. The inclusion complex was prepared by a saturated solution method and characterized by FT-IR, SEM, TGA, and XRD. All results indicated that fluroxypyr successfully entered the HPβCD cavity. In addition, the study of phase solubility identifies that the water solubility of fluroxypyr was greatly improved after the formation of the inclusion complex, and TGA analysis suggested that the formation of the inclusion complex improved the thermal stability. Bioactivity assay tests showed that the inclusion complex still had strong herbicidal activity. Our research showed that HPβCD was a promising carrier for improving the properties of fluroxypyr and, thus, expanding its use in agrochemical formulations.

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Fe3O4 nanoparticles functionalized with poly(ethylene glycol) for the selective separation and enrichment of Au(iii)

New Journal of Chemistry ◽

10.1039/c9nj05551g ◽

2020 ◽

Vol 44 (4) ◽

pp. 1313-1319

Author(s):

Xu Yang ◽

Kunhao Yang ◽

Li Wu ◽

Jingkui Yang ◽

Yujian He

Keyword(s):

Aqueous Solution ◽

Magnetic Nanoparticles ◽

Ethylene Glycol ◽

Fe3o4 Nanoparticles ◽

Selective Separation ◽

Poly Ethylene Glycol ◽

Poly Ethylene

Mechanism of Fe3O4@CPTES@PEG magnetic nanoparticles for selectively adsorbing Au(iii) from aqueous solution at pH = 1.0.

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Synthesis of a high-surface area V2O5/TiO2–SiO2 catalyst and its application in the visible light photocatalytic degradation of methylene blue

RSC Advances ◽

10.1039/c9ra03866c ◽

2019 ◽

Vol 9 (42) ◽

pp. 24368-24376 ◽

Cited By ~ 4

Author(s):

Ajay Kumar Adepu ◽

Srinath Goskula ◽

Suman Chirra ◽

Suresh Siliveri ◽

Sripal Reddy Gujjula ◽

...

Keyword(s):

Methylene Blue ◽

Visible Light ◽

Surface Area ◽

High Surface ◽

High Surface Area ◽

Bet Surface Area ◽

Titanium Silicate ◽

Ft Ir ◽

Synthesized Materials ◽

Visible Light Photocatalytic

In the present study, we synthesized several high-surface area V2O5/TiO2–SiO2 catalysts (vanado titanium silicate, VTS). The synthesized materials are characterized by PXRD, FE-SEM/EDAX, TEM, BET-surface area, FT-IR, UV-Vis, XPS, fluorescence and photocatalytic studies.

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Rh/Ni wet-impregnated Ia3d mesostructured aluminosilicate and r-GO catalysts for hydrodeoxygenation of phenoxybenzene

New Journal of Chemistry ◽

10.1039/c7nj00367f ◽

2017 ◽

Vol 41 (16) ◽

pp. 7893-7907 ◽

Cited By ~ 9

Author(s):

Sudhakar Pichaikaran ◽

Arumugam Pandurangan

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Surface Area ◽

Structural Properties ◽

Bet Surface Area ◽

Xps Analysis ◽

Icp Oes ◽

Reduced Graphene ◽

Ft Ir

Rh/Ni bimetallic supported bifunctional 3D porous aluminosilicate and Rh/Ni supported reduced graphene oxide (r-GO) catalysts were synthesised and their structural properties evaluated by XRD, BET-surface area, FT-IR, NH3-TPD, H2-TPR, ICP-OES, HRTEM-EDAX and XPS analysis.

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