scholarly journals Comparative Studies of Dye Removal Efficiency of Surface Functionalized Nanoparticles with Other Adsorbents: Isotherm and Kinetic Study

2021 ◽  
Vol 33 (12) ◽  
pp. 3031-3038
Author(s):  
Arti Jangra ◽  
Jaiveer Singh ◽  
Radhika Khanna ◽  
Parvin Kumar ◽  
Suresh Kumar ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Humic Acid ◽  
Iron Oxide Nanoparticles ◽  
Removal Efficiency ◽  
Magnetite Nanoparticles ◽  
Dye Removal ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Crystal Violet Dye ◽  
Pseudo Second Order

In present work, the synthesis of the humic acid functionalized iron oxide nanoparticles and their application in water treatment are reported. The bare and humic acid functionalized iron oxide nanoparticles were characterized using different techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy. The synthesized magnetite nanoparticles coated with humic acid showed efficient removal of crystal violet dye from the aqueous solution. The functionalized magnetite nanoparticles were found to have higher adsorption capacity as compared to bare magnetite nanoparticles and the pure humic acid under specific conditions. The adsorption kinetics study was found in accordance with pseudo-second order kinetics while the isotherm data was observed to be in good agreement with the Tempkin isotherm. A comparative study of dye removal efficiency of humic acid functionalized magnetite nanoparticles with reported adsorbents has also been made.

Synthesis of Iron Oxide Nanoparticles by Different Methods and Study of their Properties

2015 ◽  
Vol 230 ◽  
pp. 108-113 ◽  
Author(s):  
O.V. Yelenich ◽  
S.O. Solopan ◽  
T.V. Kolodiazhnyi ◽  
Jean Marc Greneche ◽  
Anatolii G. Belous
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Zero Field ◽  
X Ray Diffraction ◽  
Magnetic Studies ◽  
Brij 35 ◽  
Cryochemical Synthesis ◽  
Specific Loss Power ◽  
Triton X

In this work, iron oxide nanoparticles have been synthesized by precipitation in diethylene glycol, by cryochemical synthesis, in microemulsions using surfactants Triton X-100, Brij-35 and CTAB. Comparative spectroscopic, thermal, X-ray diffraction, 57Fe zero-field Mössbauer and magnetic studies of the synthesized nanoparticles have been carried out. Magnetic fluids prepared from synthesized nanopowders have been characterized by calorimetric measurements of specific loss power (SLP).

scholarly journals Preparation and Characterization of Polyethylene Glycol Coating Iron Oxide Nanoparticles for Curcumin Delivery

2019 ◽  
Vol 31 (8) ◽  
pp. 1719-1723
Author(s):  
Nguyen Thi Thanh Thuy ◽  
Le Duc Anh ◽  
Nguyen Huu Tri ◽  
Cu Van Hoang ◽  
Nguyen Anh Nhut
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Sonication Time ◽  
X Ray Diffraction ◽  
Target Drug Delivery ◽  
Target Drug ◽  
Fe3o4 Nps ◽  
Average Size

The PEG-coated iron oxide nanoparticles (Fe3O4 NPs-PEG) was synthesized by coprecipitation and ultrasonication method. X-ray diffraction results exhibited that the average size of Fe3O4 NPs-PEG was 19.10 nm, which was further confirmed in TEM imaging. In addition, sonication time and curcumin concentration were studied to evaluate the efficiency of loading curcumin onto Fe3O4 NPs-PEG. Further, statistical optimization using response surface methodology (RSM) has shown curcumin concentration (0,01% w/v) and sonication time (21 min) for maximal curcumin loading (0.37 mg/g). Along with the magnetization studies, the immobilization of curcumin onto the Fe3O4 NPs-PEG was characterized by UV, FTIR and SEM. The results showed that the curcumin loaded PEG coated iron oxide nanoparticles could potentially be used for magnetically target drug delivery.

Green synthesis of iron oxide nanoparticles for tartrazine and bordeaux red dye removal

2020 ◽  
Vol 8 (1) ◽  
pp. 103618 ◽  
Author(s):  
Ana Carolina de Lima Barizão ◽  
Marcela Fernandes Silva ◽  
Murilo Andrade ◽  
Fernanda Caroline Brito ◽  
Raquel Guttierres Gomes ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Green Synthesis ◽  
Iron Oxide Nanoparticles ◽  
Dye Removal ◽  
Oxide Nanoparticles ◽  
Red Dye

Modeling performance of rhamnolipid-coated engineered magnetite nanoparticles for U(vi) sorption and separation

2020 ◽  
Vol 7 (7) ◽  
pp. 2010-2020
Author(s):  
Neha Sharma ◽  
Anushree Ghosh ◽  
John D. Fortner ◽  
Daniel E. Giammar
Keyword(s):  
Iron Oxide ◽  
Water Chemistry ◽  
Iron Oxide Nanoparticles ◽  
Magnetite Nanoparticles ◽  
Oxide Nanoparticles

Iron oxide nanoparticles were stabilized in water using the biosurfactant rhamnolipid, and the adsorption of U(vi) to these nanoparticles was measured and modeled as a function of water chemistry.

Synthesis and Effect of Some Parameters through Reverse Micelles Route of Iron Oxide Nanoparticles

2009 ◽  
Vol 152-153 ◽  
pp. 205-208 ◽  
Author(s):  
H. Arabi ◽  
S. Nateghi ◽  
S. Sadeghi
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Reverse Micelles ◽  
Room Temperature ◽  
Molar Ratio ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Significant Difference ◽  
Vibration Sample Magnetometer

Iron oxide nanoparticles were synthesis by reverse micelle method. X-ray diffraction technique and vibration sample magnetometer were applied to characterize the produced samples at different conditions and parameters for synthesis route. There is no significant difference between samples prepared at 5°C and room temperature except a better crystalline at room temperature. The molar ratio of water to surfactant (w parameter) and concentration of the salt solution on size and magnetic properties of nanoparticles have been investigated. Increasing w leads to producing particles with larger size i.e. for w=16.83, 11.22, and 5.6, particles size are 15.22, 11.66 and 10.5 nm, respectively. The size of nanoparticles are in the range of 9 to 20 nanometers

scholarly journals Synthesis of a new magnetic adsorbent using green tea leaf extract and its application in phenol removal by RSM method

2021 ◽  
Author(s):  
Sayed Zia Mohammadi ◽  
Batoul Lashkari ◽  
Azita Khosravan
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Iron Concentration ◽  
Oxide Nanoparticles ◽  
Phenol Removal ◽  
X Ray Diffraction ◽  
Tea Leaves ◽  
X Ray ◽  
Tea Leaf ◽  
The Relationship

Abstract In this research, iron oxide nanoparticles were prepared by green synthesis and identified by scanning electron microscopy, X-ray diffraction, infrared spectroscopy, and vibrational magnetometer. The tea leaves extract was used as a reducing agent to synthesize iron oxide nanoparticles. The systematic study of the process was performed using Design Expert 10 software to determine the relationship between the four process variables, namely iron concentration, extract volume, time, and temperature effect. The square model was significant for the response variables. The iron oxide nanoparticles had super-magnetic properties. Then, iron oxide nanoparticles were used for magnetization of activated carbon (MAC). Finally, the MAC were used for phenol removing by response surface methodology (RSM) method. The results manifested that the generated MAC is quite effective in removing phenol. Various parameters such as pH, extraction time and adsorbent amount were optimized by the RSM method. The absorption of phenol was measured by using a spectrophotometer at a maximum wavelength of 510 nm. It was also indicated that phenol in an aqueous solution was removed up to 98%.

Adsorption and desorption of chromium with humic acid coated iron oxide nanoparticles

2019 ◽  
Vol 26 (29) ◽  
pp. 30044-30054 ◽  
Author(s):  
Shilpa Gnanamuthu Singaraj ◽  
Biswanath Mahanty ◽  
Darshan Balachandran ◽  
Anamika Padmaprabha
Keyword(s):  
Iron Oxide ◽  
Humic Acid ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Adsorption And Desorption

scholarly journals Synthesis and Antibacterial and Antibiofilm Activity of Iron Oxide Glycerol Nanoparticles Obtained by Coprecipitation Method

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Simona Liliana Iconaru ◽  
Alina Mihaela Prodan ◽  
Philippe Le Coustumer ◽  
Daniela Predoi
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Lattice Parameter ◽  
Coprecipitation Method ◽  
Oxide Nanoparticles ◽  
Antibiofilm Activity ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cubic Lattice ◽  
Antibacterial Studies

The glycerol iron oxide nanoparticles (GIO-NPs) were obtained by an adapted coprecipitation method. The X-ray diffraction (XRD) studies demonstrate that GIO-NPs were indexed into the spinel cubic lattice with a lattice parameter of 0.835 nm. The refinement of XRD spectra indicated that no other phases except maghemite were detected. The adsorption of glycerol on iron oxide nanoparticles was investigated by Fourier transform infrared (FTIR) spectroscopy. On the other hand, this work implicated the use of GIO-NPs in antibacterial studies. The results indicate that, in the case ofP. aeruginosa  1397biofilms, at concentrations from 0.01 mg/mL to 0.625 mg/mL, the glycerol iron oxide inhibits the ability of this strain to develop biofilms on the inert substratum.

scholarly journals Synthesis of Iron Oxide Nanoparticles Using Isobutanol

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Diana Kostyukova ◽  
Yong Hee Chung
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Ammonium Hydroxide ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Ferrous Chloride ◽  
X Ray ◽  
Superparamagnetic Properties

Iron oxide nanoparticles were synthesized by precipitation in isobutanol with sodium hydroxide and ammonium hydroxide. The isobutanol played a role of a surfactant in the synthesis. The nanoparticles were calcined for 100 min to 5 hours in the range of 300 to 600°C. The characterization of the samples by FTIR (Fourier-transform infrared) and XRD (X-ray diffraction) confirmed the formation ofγ-Fe2O3(maghemite) from Fe3O4(magnetite) at calcination at 300°C. The morphology and particle size were studied by SEM (scanning electron microscope). Nanoparticles in the range of 11–22 nm prepared at 0.09 M of ferrous chloride exhibited superparamagnetic properties. Nanoparticles synthesized with ferrous chloride and ammonium hydroxide at 75°C and calcined at 530°C for 2 h wereα-Fe2O3(hematite).

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