Polyol-Mediated Preparation of Nanoscale Oxide Particles

Feldmann, Claus; Jungk, Hans-Otto

doi:10.1002/1521-3773(20010119)40:2<359::aid-anie359>3.0.co;2-b

Cited by 407 publications

(84 citation statements)

References 32 publications

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“…33 Another method is the polyolmediated synthesis in poly-alcohols like ethylene glycol or diethylene glycol. 23,34,35 However, these approaches remain undemonstrated for producing large amounts of material and a reduction of Fe 3þ by oxidation of the polyol was also observed. 36 On the other hand, widely used methods for the preparation of nanocrystalline BFO are sol-gel reactions like chelate assisted or Pechini reactions with citric acid 37 or tartaric acid.…”

Section: Synthesis Of Bfo Nanoparticles By Combustion Methodsmentioning

confidence: 99%

Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles

Schwung

Rogov

Clarke

et al. 2014

Journal of Applied Physics

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Enhanced magnetic behavior, exchange bias effect, and dielectric property of BiFeO3 incorporated in (BiFeO3)0.50 (Co0.4Zn0.4Cu0.2 Fe2O4)0.5 nanocomposite AIP Advances 4, 037112 (2014) Second Harmonic Generation (SHG) from BiFeO 3 nanocrystals is investigated for the first time to determine their potential as biomarkers for multiphoton imaging. Nanocrystals are produced by an auto-combustion method with 2-amino-2-hydroxymethyl-propane-1,3-diol as a fuel. Stable colloidal suspensions with mean particle diameters in the range 100-120 nm are then obtained after wet-milling and sonication steps. SHG properties are determined using two complementary experimental techniques, Hyper Rayleigh Scattering and nonlinear polarization microscopy. BiFeO 3 shows a very high second harmonic efficiency with an averaged hdi coefficient of 79 6 12 pm/V. From the nonlinear polarization response of individual nanocrystals, relative values of the independent d ij coefficients are also determined and compared with recent theoretical and experimental studies. Additionally, the particles show a moderate magnetic response, which is attributed to c-Fe 2 O 3 impurities. A combination of high nonlinear optical efficiency and magnetic response within the same particle is of great interest for future bio-imaging and diagnostic applications. V C 2014 AIP Publishing LLC.[http://dx

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Section: Synthesis Of Bfo Nanoparticles By Combustion Methodsmentioning

confidence: 99%

Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles

Schwung

Rogov

Clarke

et al. 2014

Journal of Applied Physics

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“…The polyol is a solvent, and it is a multidentate and high-boiling alcohol (e.g., diethylene glycol/DEG, ethylene glycol, glycerin), which acts as surface stabilizer. Since high temperatures are applied, well-crystallized materials can be realized [36][37][38]. DEG furthermore stabilizes the particle surfaces during nucleation and crystallization and therefore prevents particle growth and aggregation.…”

Section: Introductionmentioning

confidence: 99%

Controlled synthesis and electrical conduction properties of anatase TiO2 nanoparticles via the polyol method

et al. 2016

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This paper reports the preparation and characterization of titanium dioxide nanoparticles (TiO 2 -NPs) with pure anatase phases using polyol synthesis process. The preparation state and the particle size are controlled by varying the synthesis parameters such as the precursor concentration, hydrolysis rate and the synthesis time. Nanoparticles were characterized by X-ray diffractometry, TEM, FT-IR spectroscopy and the measure of the complex impedance spectroscopy. Their physicochemical properties were investigated to optimize the synthesis conditions. FT-IR spectra exhibit broad peaks where anatase phases of TiO 2 demonstrate very sharp peaks. The structural characterization by XRD confirms that there is a formation of anatase TiO 2 -NPs phases at 550°C and the crystalline size is in the range of 19-25 nm. The crystallite size of the TiO 2 core decreases with the concentration of titanium tetrachloride TiCl 4 precursor. Electrical properties and relaxation phenomenon of the material were studied at several temperatures.

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“…Ethylene glycol, an effective co-solvent usually successfully used in polyol process by a versatile chemical approach to obtain kinds of nanostructured metals [15], metal oxides [16], metal tungstate [17,18] (e.g., FeWO 4 and Bi 2 WO 6 ), due to its special physical and chemical properties. Although ZnWO 4 nanostructures with morphology of nanocrystals [11], nanorods [8,19], nanowires [5], hollow clusters [20] and spheres [21] have already been studied yet, quantities of uniform and better dispersed small ZnWO 4 nanocrystals and ZnWO 4 nanorods with diverse sizes under simple solvothermal synthesis using EG as co-solvent and shape modifier has not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

Ethylene glycol-assisted solvothermal fabrication of ZnWO4 nanostructures with tunable size, optical properties, and photocatalytic activities

et al. 2014

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Large scale of uniform small ZnWO 4 nanocrystals and ZnWO 4 nanorods with tunable size have been fabricated in ethylene glycol (EG)-assisted solvothermal process, ZnWO 4 samples ranging in shape from tiny nanocrystals to nanorods were dependent on the volume ratio of EG and water (H 2 O). The optical properties of ZnWO 4 nanocrystals and nanorods were investigated by photoluminescence (PL) spectroscopy, showing longer ZnWO 4 nanorods own the increased PL intensity in comparison with that of shorter ones and small ZnWO 4 nanocrystals. The photocatalytic performance of ZnWO 4 nanostructures was studied also, which indicated that the increased size of ZnWO 4 nanorods resulted the degradation of photocatalytic performance in aqueous solution.

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Polyol-Mediated Preparation of Nanoscale Oxide Particles

Cited by 407 publications

References 32 publications

Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles

Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles

Controlled synthesis and electrical conduction properties of anatase TiO2 nanoparticles via the polyol method

Ethylene glycol-assisted solvothermal fabrication of ZnWO4 nanostructures with tunable size, optical properties, and photocatalytic activities

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