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Zumin Qiu

Bio: Zumin Qiu is an academic researcher from Nanchang University. The author has contributed to research in topics: Magnetic particle inspection & Magnetic field. The author has an hindex of 1, co-authored 1 publications receiving 111 citations.

Papers
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TL;DR: In this paper, aqueous co-precipitation of FeCl3·6H2O and FeC12·4H 2O with ammonium hydroxide was used to obtain cubic shaped and dispersive magnetic nanoparticles with narrow size distribution and average diameter of 11.4 nm.

128 citations


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TL;DR: Ferrite nanoparticles (FNPs) have attracted a great interest due to their wide applications in several areas such as biomedical, wastewater treatment, catalyst and electronic device as discussed by the authors, where the synthesis, characterisation and application of FNPs in electronic device with more emphasis on the recently published works.
Abstract: Ferrite nanoparticles (FNPs) have attracted a great interest due to their wide applications in several areas such as biomedical, wastewater treatment, catalyst and electronic device. This review focuses on the synthesis, characterisation and application of FNPs in electronic device with more emphasis on the recently published works. The most commonly used synthesis techniques along with their advantages and limitations are discussed. The available characterisation techniques and their application in electronic materials such as sensors and biosensors, energy storage, microwave device, electromagnetic interference shielding and high-density recording media are briefly reviewed.

367 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of thermal annealing on uncoated and coated magnetite nano-particles has been investigated using transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, infrared (IR) and Raman spectrographic analysis (TGA).

283 citations

Journal ArticleDOI
TL;DR: Several popular methods including co-precipitation, microemulsion, thermal decomposition, solvothermal, sonochemical, microwave-assisted, chemical vapor deposition, combustion, carbon arc, and laser pyrolysis are reported for the synthesis of magnetic nanoparticles.
Abstract: The synthesis of different kinds of magnetic nanoparticles (MNPs) has attracted much attention. During the last few years, a large portion of the articles published about MNPs have described efficient routes to attain shape-controlled and highly stable MNPs with narrow size distribution. In this review, we have reported several popular methods including co-precipitation, microemulsion, thermal decomposition, solvothermal, sonochemical, microwave-assisted, chemical vapor deposition, combustion, carbon arc, and laser pyrolysis, for the synthesis of magnetic nanoparticles.

238 citations

Journal ArticleDOI
TL;DR: In this article, the exploitation of magnetic composites and magnetic nanocomposites for adsorption of dyes, hazards posed by Dyes, sorption mechanism, preparation methods, magnetic behavior and characteristics of magnetized particles with the relevant literature on the basic principle of adsorbption using MCs and MNCs for separation of dye under optimum physicochemical condition.
Abstract: Adsorption is the most extensively used technique for dye sequestration. Magnetic separation of toxic pollutant is becoming a potential method in waste water purification and found to have predominant significance in the removal of dyes more effectively compared to conventional method of treatments. Numerous natural and synthetic adsorbents were used, out of which magnetic composites (MCs) and magnetic nanocomposites (MNCs) have gained much attention presently in the removal of dyes from aqueous solution. Abundant references are existing pertaining to synthesis of various magnetic composites and its application in adsorption of dyes. This report displays the exploitation of MCs and MNCs for adsorption of dyes, hazards posed by dyes, sorption mechanism, preparation methods, magnetic behavior and characteristics of magnetized particles with the relevant literature on the basic principle of adsorption using MCs and MNCs for separation of dyes under optimum physicochemical condition. Adsorption reaction model, diffusion model and isotherms which facilitate in understanding the reaction mechanism between adsorbent and adsorbate are concisely discussed.

191 citations

Journal ArticleDOI
20 Nov 2009
TL;DR: In this paper, superparamagnetic magnetite nanoparticles (mean diameter ∼10nm) were synthesized using the co-precipitation route from Fe2+/Fe3+ in aqueous solutions (molar ratio 1:2) by adding a base under mechanical stirring at 10,000rpm.
Abstract: Superparamagnetic magnetite nanoparticles (mean diameter ∼10 nm) were synthesized using the co-precipitation route from Fe2+/Fe3+ in aqueous solutions (molar ratio 1:2) by adding a base under mechanical stirring at 10,000 rpm. This stirring velocity was found to be suitable for obtaining nanoparticles of this mean size, and a decrease in stirring velocity resulted in a larger size (∼19 nm) and a wider size distribution. At 18,000 rpm, in addition to magnetite, goethite is also synthesized in the form of nanoparticles and nanorods are found. At higher stirring velocities (25,000 rpm), the solution's core temperature increased from 20° to 37 °C, generating a mixture of non-magnetic iron compounds.

140 citations