Control of size and morphology in NiO particles prepared by a low-pressure spray pyrolysis

Lenggoro, I. Wuled; Itoh, Yoshifumi; Iida, Noritaka; Okuyama, Kikuo

doi:10.1016/j.materresbull.2003.08.005

Cited by 101 publications

(52 citation statements)

References 18 publications

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“…This distinctive nature of the USP process has excluded the use of USP for the production of nanoparticles. There have been some attempts to produce nanometer-sized particles by USP (e.g., low-pressure spray pyrolysis); [192][193][194] however, the requirement of a vacuum system and the difficulties in controlling experimental parameters in this method have prevented its wide spread use for nanoparticle production.…”

Section: Nanostructured Materials From Metal Salt-based Nanocompositesmentioning

confidence: 99%

Applications of Ultrasound to the Synthesis of Nanostructured Materials

2010

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Recent advances in nanostructured materials have been led by the development of new synthetic methods that provide control over size, morphology, and nano/microstructure. The utilization of high intensity ultrasound offers a facile, versatile synthetic tool for nanostructured materials that are often unavailable by conventional methods. The primary physical phenomena associated with ultrasound that are relevant to materials synthesis are cavitation and nebulization. Acoustic cavitation (the formation, growth, and implosive collapse of bubbles in a liquid) creates extreme conditions inside the collapsing bubble and serves as the origin of most sonochemical phenomena in liquids or liquid-solid slurries. Nebulization (the creation of mist from ultrasound passing through a liquid and impinging on a liquid-gas interface) is the basis for ultrasonic spray pyrolysis (USP) with subsequent reactions occurring in the heated droplets of the mist. In both cases, we have examples of phase-separated attoliter microreactors: for sonochemistry, it is a hot gas inside bubbles isolated from one another in a liquid, while for USP it is hot droplets isolated from one another in a gas. Cavitation-induced sonochemistry provides a unique interaction between energy and matter, with hot spots inside the bubbles of approximately 5000 K, pressures of approximately 1000 bar, heating and cooling rates of >10(10) K s(-1); these extraordinary conditions permit access to a range of chemical reaction space normally not accessible, which allows for the synthesis of a wide variety of unusual nanostructured materials. Complementary to cavitational chemistry, the microdroplet reactors created by USP facilitate the formation of a wide range of nanocomposites. In this review, we summarize the fundamental principles of both synthetic methods and recent development in the applications of ultrasound in nanostructured materials synthesis.

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Section: Nanostructured Materials From Metal Salt-based Nanocompositesmentioning

confidence: 99%

Applications of Ultrasound to the Synthesis of Nanostructured Materials

2010

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“…As a result, larger particles are fragmented into smaller pieces that undergo simultaneous solvent evaporation to produce nanoparticles or weakly agglomerated particles, thereby avoiding the formation of hollow particles. In the case of lowpressure spray pyrolysis, par ticle morphology is highly dependent on the temperature of the heating section, whereas the solubility of the precursor solutions can greatly influence the degree of agglomeration of the particles (Lenggoro et al 2003).…”

Section: Spray Pyrolysismentioning

confidence: 99%

Generation and Sizing of Particles for Aerosol-Based Nanotechnology

Biskos

Vons

Yurteri

et al. 2008

KONA

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“…These applications can be enhanced by decreasing the particle size (preferably to less than 20 n m) and are highly dependent on particle size; the precise control of the size and distribution in a nanometer region is required. Recently, several methods have been developed to prepare ultrafine nickel o xide powder, including low-p ressure spray pyrolysis [17], surfactantmed iated method [18], simp le liquid phase process [19] and other techniques [20][21][22] .Th is work reports the synthesis of nickel o xide nanoparticles by chemical capping method using nickel chloride, alan ine, ethanol and ammonia. Using alanine -an aminoacid in synthesis process is the novelty of this work and the end product nickel o xide nanoparticles will be bio-co mpatible in nature and will be very useful for bio-sensor related applications.…”

Section: Introductionmentioning

confidence: 99%

Chemical Capping Synthesis of Nickel Oxide Nanoparticles and their Characterizations Studies

Rifaya¹,

Thirugnanasambandan²,

Alagar³

2012

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This work reports aspect related to chemical capping synthesis of nano-sized particles of nickel o xide. It is a simp le, novel and cost effective method. The average particle size, specific surface area, crystallin ity index are estimated fro m XRD analysis. The structural, functional groups and optical characters are analyzed with using of SEM, FTIR and UV-visib le techniques. XRD studies confirm the p resence of high degree of crystallin ity nature of nickel o xide nanoparticles. Their particle size is found to be 12 n m and specific surface area (SSA) is 74m2 g-1. The optical band gap energy value 3.83ev has also been determined fro m UV-Vis spectrum.

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Control of size and morphology in NiO particles prepared by a low-pressure spray pyrolysis

Cited by 101 publications

References 18 publications

Applications of Ultrasound to the Synthesis of Nanostructured Materials

Applications of Ultrasound to the Synthesis of Nanostructured Materials

Generation and Sizing of Particles for Aerosol-Based Nanotechnology

Chemical Capping Synthesis of Nickel Oxide Nanoparticles and their Characterizations Studies

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