Magnetocaloric Effect and Universal Curve Behavior in Superparamagnetic Zinc Ferrite Nanoparticles Synthesized via Microwave Assisted Co-Precipitation Method

2018 ◽  
Vol 215 (11) ◽  
pp. 1700842 ◽  
Author(s):  
Prabhakaran Thandapani ◽  
Mangalaraja Ramalinga Viswanathan ◽  
Juliano C. Denardin
Keyword(s):  
Magnetocaloric Effect ◽  
Zinc Ferrite ◽  
Ferrite Nanoparticles ◽  
Precipitation Method ◽  
Universal Curve ◽  
Microwave Assisted ◽  
Co Precipitation

Electrochemical and Magnetic Properties of Zinc Ferrite Nanoparticles through Chemical Co-Precipitation Method

2020 ◽  
Vol 28 ◽  
pp. 100477 ◽  
Author(s):  
K. Sathiyamurthy ◽  
C. Rajeevgandhi ◽  
S. Bharanidharan ◽  
P. Sugumar ◽  
S. Subashchandrabose
Keyword(s):  
Magnetic Properties ◽  
Zinc Ferrite ◽  
Ferrite Nanoparticles ◽  
Precipitation Method ◽  
Electrochemical And Magnetic Properties ◽  
Co Precipitation

Study on Synthesizing and Characterizing of Zinc Ferrite Nanoparticles

2011 ◽  
Vol 391-392 ◽  
pp. 545-548 ◽  
Author(s):  
Ting Li Cheng ◽  
Min Zheng ◽  
Zuo Shan Wang ◽  
Zhong Li Chen
Keyword(s):  
Zinc Ferrite ◽  
Ferrite Nanoparticles ◽  
Vinyl Pyrrolidone ◽  
Precipitation Method ◽  
X Ray ◽  
Transmission Electron ◽  
Ft Ir ◽  
Poly Vinyl Pyrrolidone ◽  
Co Precipitation ◽  
Scanning Electron

Zinc ferrite (ZnFe2O4) crystalline was prepared via co-precipitation method, followed by calcinations at various temperatures from 400 to 600 . Poly (vinyl pyrrolidone) (PVP) was used as a stabilizer to prevent the particles from agglomeration. The variation of crystallite size has been investigated using X-ray powder diffraction (XRD), transmission electron microscopy(TEM), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope(SEM), and a recipe has been developed for the preparation of nano ZnFe2O4with 6.7nm size and complete crystallization.

scholarly journals Synthesis and Characterization of the CaTiO3:Eu3+ Red Phosphor by an Optimized Microwave-Assisted Sintering Process

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 874
Author(s):  
Haifeng Wang ◽  
Jianwei Lu ◽  
Ruoxuan Wang ◽  
Yungu Dong ◽  
Linfeng Ding
Keyword(s):  
Red Light ◽  
Precipitation Method ◽  
Synthesis Process ◽  
Sintering Process ◽  
Time Saving ◽  
Red Phosphor ◽  
Microwave Assisted ◽  
Furnace Sintering ◽  
Co Precipitation

The synthesis process has a significant influence on the properties of Ca1-xTiO3:Eu3+x phosphors; thus, an optimized process will lead to a better performance of the Ca1-xTiO3:Eu3+x phosphors. In this work, the feasibility of synthesizing the Ca1-xTiO3:Eu3+x phosphor with a good luminescent performance by combining the chemical co-precipitation method and microwave-assisted sintering was studied. The precursor of Ca1-xTiO3:Eu3+x phosphors were prepared by the chemical co-precipitation method. To find an optimized process, we applied both of the traditional (furnace) sintering and the microwave-assisted sintering to synthesize the Ca1-xTiO3:Eu3+x phosphors. We found out that a sintering power of 528 W for 50 min (temperature around 950 °C) by a microwave oven resulted in similar emission intensity results compared to traditional furnace sintering at 900 °C for 2.5 h. The synthesized Ca1-xTiO3:Eu3+x phosphors has an emission peak at 617 nm (5D0→7F2), which corresponds to the red light band. This new synthesized method is an energy efficient, time saving, and environmentally friendly means for the preparation of Ca1-xTiO3:Eu3+x red phosphor with good luminescent performance.

Study on the Characterization of Zinc Ferrite High-Temperature Coal Gas Desulfurization Agent

2010 ◽  
Vol 129-131 ◽  
pp. 1233-1237
Author(s):  
Hong Yan Xu ◽  
Mei Sheng Liang ◽  
Chun Hu Li
Keyword(s):  
Zinc Ferrite ◽  
Raw Materials ◽  
Particle Diameter ◽  
Textural Properties ◽  
Zinc Nitrate ◽  
Gas Absorption ◽  
Precipitation Method ◽  
Ferric Nitrate ◽  
The One ◽  
Co Precipitation

Using ferric nitrate, zinc nitrate, ammonia liquor and binder as main raw materials, five kinds of zinc ferrite sorbents were prepared by the co-precipitation method. The effects of the different binders on the structure and texture of zinc ferrite sorbents were investigated. The morphology, composite structure, pore properties, and mechanical strength were studied by using modern several physicochemical techniques such as powder X-ray diffraction (XRD), scanning electronic microscopy (SEM), strength tester and gas absorption meter. It is showed that spinel structure ZnFe2O4 is not affected by different binders，and its particle diameter is in micron leve1. The spinel structures are present in the sorbents that have been calcined at 750 0C.. The sorbent employed kaolinite as binder is the best one of the five types of sorbents for desulfurization, while the one employed diatomite is the worst.Different binders modify the textural properties, modifying consequently the sorbent reactivity. Furthermore, the reactivity and sulfur capacity of sorbents are increasing with an increase in the pore volume.

scholarly journals The Synergistic Effect of Zinc Ferrite Nanoparticles Uniformly Deposited on Silver Nanowires for the Biofilm Inhibition of Candida albicans

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1431 ◽  
Author(s):  
Deepika Thakur ◽  
Saravanan Govindaraju ◽  
KyuSik Yun ◽  
Jin-Seo Noh
Keyword(s):  
Candida Albicans ◽  
Zinc Ferrite ◽  
Silver Nanowires ◽  
Weight Ratio ◽  
Ferrite Nanoparticles ◽  
Hybrid Nanostructures ◽  
Precipitation Method ◽  
Inhibition Activity ◽  
Xtt Assay ◽  
Biofilm Inhibition

Near-monodisperse zinc ferrite nanoparticles (ZnFe2O4 NPs) are synthesized by a co-precipitation method and deposited on the surface of silver nanowires (AgNWs), employing a stepwise solution method. The resulting hybrid nanostructures (ZnFe2O4@AgNWs) show a thin and uniform layer of ZnFe2O4 NPs at an optimum weight ratio of 1:6 between the two component nanostructures. The hybrid nanostructures retain the high crystal quality and phase purity of their constituents. It is demonstrated that the ZnFe2O4@AgNWs hybrid nanostructures are effective at inhibiting the biofilm formation of Candida albicans cells. The biofilm inhibition activity of the hybrid nanostructures is estimated to be more than 50% at a low concentration of 100 µg/mL from both crystal violet assay and XTT assay, which are more than 8-fold higher than those of pure AgNWs and ZnFe2O4 NPs. This greatly enhanced biofilm inhibition activity is attributed to the ZnFe2O4 NPs-carrying membrane penetration by AgNWs and the subsequent interaction between Candida cells and ZnFe2O4 NPs. These results indicate that the ZnFe2O4@AgNWs hybrid nanostructures have great potential as a new type of novel antibiofilm agent.

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