Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing

Dugandžić, Ivan; Lojpur, Vesna; Mančić, Lidija; Dramićanin, Miroslav; Rabanal, M.E.; Hashishin, Takeshi; Tan, Zhenquan; Ohara, Satoshi; Milošević, Olivera

doi:10.1016/j.apt.2013.02.011

Cited by 11 publications

(4 citation statements)

References 24 publications

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“…The solute precipitates first on the more highly supersaturated surface if the sufficient time is not available for solute diffusion in the droplet (the solvent (e.g., water) evaporation characteristic time is shorter than the solute diffusion characteristic time). However, for the droplet sizes used in these experiments (of about 2.52 m for ultrasound frequency of 2.1 MHz), the temperature distribution along the radius of a droplet could be presumably ignored because of small Biot number [16]. If so, the resistance to heat flow within the solid is small relative to the resistance presented by the convection processes at the surface causing the temperature uniformity inside the droplet and at the droplet surface.…”

Section: Resultsmentioning

confidence: 99%

Structural and Morphological Properties of Nanostructured ZnO Particles Grown by Ultrasonic Spray Pyrolysis Method with Horizontal Furnace

Flores-Carrasco

Carrillo-López

Luna-López

et al. 2014

Advances in Materials Science and Engineering

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ZnO nanoparticles were synthesized in a horizontal furnace at 500°C using different zinc nitrate hexahydrate concentrations (0.01 and 0.1 M) as reactive solution by ultrasonic spray pyrolysis method. The physical-chemical properties of synthesized ZnO nanoparticles have been characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and high resolution transmission electron microscopy (HRTEM). With the TGA is has optimized the temperature at which the initial reactive (Zn(NO3)2·6H2O), is decomposed completely to give way to its corresponding oxide, ZnO. SEM revealed secondary particles with a quasispherical shape that do not change significantly with the increasing of precursor solution concentration as well as some content of the broken spheres. Increasing the precursor solution concentration leads to the increase in the average size of ZnO secondary particles from248±73to470±160 nm; XRD reveals the similar tendency for the crystallite size which changes from23±4to45±4 nm. HRTEM implies that the secondary particles are with hierarchical structure composed of primary nanosized subunits. These results showed that the precursor concentration plays an important role in the evolution on the size, stoichiometry, and morphology of ZnO nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Structural and Morphological Properties of Nanostructured ZnO Particles Grown by Ultrasonic Spray Pyrolysis Method with Horizontal Furnace

Flores-Carrasco

Carrillo-López

Luna-López

et al. 2014

Advances in Materials Science and Engineering

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“…108 Furthermore, other interparticle forces of colloidal MSNs, such as solvation force, have never been investigated from the viewpoints of the actual contributions to interparticle interactions. Although the total strength of interparticle interactions can be measured quantitatively by atomic force microscopy using a colloidal probe 109 or surface forces measurement 110 in a straightforward manner, these methods have never been applied to the study of colloidal MSNs. The investigation of interparticle forces of colloidal MSNs through these methods should be of interest in colloid science.…”

Section: Investigation Of Colloidal Stability Of Msnsmentioning

confidence: 99%

Colloidal Mesoporous Silica Nanoparticles

Yamamoto

Kuroda

2016

Bulletin of the Chemical Society of Japan

197

100

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IMMA. His current research interests include mesostructured materials, and several fields of inorganic materials chemistry. Some examples are intercalation chemistry, silicate chemistry, inorganic polymers, sol-gel chemistry, inorganic-organic hybrids, and self-organized materials. AbstractMesoporous silica nanoparticles (MSNs) with colloidal stability have attracted increasing interest because of their important properties, such as high transparency and cell uptake. Colloidal MSNs are comprehensively reviewed from the viewpoints of their preparation, characterization, and applications which include biomedical, catalytic, and optical materials. The following two points have been emphasized. The first point is that this review covers the widest range of introduction and discussion of the preparation and applications of both colloidal and noncolloidal MSNs. The second point is that this account contains a discussion from the viewpoints of both inorganic and colloid chemistries. After the introduction of the historical background of preparation of MSNs, preparative methods of colloidal MSNs and the major factors for the preparation of nanosized and colloidal MSNs are discussed. The methods to control the size, composition, morphology, and pore size of MSNs are also presented. Appropriate methods to obtain MSNs with high colloidal dispersibility are also discussed. Applications of colloidal MSNs are introduced with an emphasis on the colloidal stability. Issues to be addressed for further developments of colloidal MSNs are finally described.

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“…A schematic view of the laboratory setup for ultrasonic spray pyrolysis used to prepare hierarchically organized TiO 2 particles was presented and described in our previous report (Dugandžić et al, 2013). Briefly, the fine and uniformly distributed droplets were continuously generated from precursor solution using the ultrasonic atomizer (RBI, France) operated at 1.7 MHz.…”

Section: Synthesis Of Tio 2 Hierarchically Organized Particlesmentioning

confidence: 99%

Aerosol-assisted processing of hierarchically organised TiO<SUB align="right">2 nanoparticles

Mančić

Dugandžić

Milošević

et al. 2015

IJMPT

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Hierarchically assembled TiO 2 nanoparticles into larger spherical ones were obtained using aerosol-assisted processing method. Unagglomerated particles with the mean size of 440 nm were obtained from colloidal solution of TiO 2 nanoparticles (~4.5 nm) using ultrasonic spray pyrolysis at 550 o C. Their morphological complexity and structural polymorphism were investigated by using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) coupled with selected area electron diffraction (SAED) analysis.Pronounced evolution of nanocrystalline TiO 2 (B) phase assembled together with the anatase building units (sized ~ 15 nm) in uniform submicrometric particles implicate their feasibility to be used in dye-sensitized solar cells and lithium ion batteries.

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Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing

Cited by 11 publications

References 24 publications

Structural and Morphological Properties of Nanostructured ZnO Particles Grown by Ultrasonic Spray Pyrolysis Method with Horizontal Furnace

Structural and Morphological Properties of Nanostructured ZnO Particles Grown by Ultrasonic Spray Pyrolysis Method with Horizontal Furnace

Colloidal Mesoporous Silica Nanoparticles

Aerosol-assisted processing of hierarchically organised TiO<SUB align="right">2 nanoparticles

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