Preparation of Layered Zinc Hydroxide/Surfactant Nanocomposite by Pulsed-Laser Ablation in a Liquid Medium

Liang, Changhao; Shimizu, Yoshiki; Masuda, Mitsutoshi; Sasaki, Takeshi; Koshizaki, Naoto

doi:10.1021/cm034706e

Cited by 150 publications

(147 citation statements)

References 27 publications

(15 reference statements)

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“…48 Crystallization in the presence of organic additives may stabilize zinc hydroxide intermediate phases. 49 However, in our experiments, the crystal structure was always confined to zincite in the absence/presence of the p-TSA. We assume that Zn(OH) 2 , if it exists at all under our reaction conditions, has a very short lifetime and is converted rapidly into ZnO.…”

Section: Mechanism Of Particle Formationmentioning

confidence: 60%

Precipitation of monodisperse ZnO nanocrystals via acid-catalyzed esterification of zinc acetate

et al. 2006

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A wet-chemical method to produce zinc oxide nanocrystals of monodisperse size distribution (diameter range of 20-80 nm) is presented. The synthesis starts from zinc acetate dihydrate which is converted to ZnO in the presence of 1-pentanol in m-xylene at 130 uC. We report for the first time catalysis of this reaction by p-toluene sulfonic acid monohydrate (p-TSA), which allows a shorter reaction time and improves both the reproducibility of the particle size distribution and the crystallinity of the particles. The reaction can be scaled up to give multigram quantities of product per batch. Particles were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and photoluminesence (PL) spectroscopy. Room temperature PL spectra of ZnO prepared without catalyst exhibit a strong and sharp UV emission band at ca. 385 nm and a weak and very broad green-yellow visible emission centered at ca. 550-560 nm. However, for nanoparticles precipitated in the presence of p-TSA, the UV emission is enhanced by a factor of 4, which can be correlated with the improvement of crystal perfection. A particle formation mechanism is discussed.

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Section: Mechanism Of Particle Formationmentioning

confidence: 60%

Precipitation of monodisperse ZnO nanocrystals via acid-catalyzed esterification of zinc acetate

et al. 2006

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“…The interlayer anions can be exchanged with various organic and inorganic charged compounds. ZLH is an interesting host nanomaterial due to the fact that its anion exchange ability has led to the formation of various nanocomposite materials in multiple applications such as catalyst host [9], surfactant nanomaterial [10], and sensors and photoelectrical devices [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characteristics of Valeric Acid-Zinc Layered Hydroxide Intercalation Material for Insect Pheromone Controlled Release Formulation

Ahmad

Hussein

Sarijo

et al. 2016

Journal of Materials

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A new intercalation compound of insect pheromone, valeric acid (VA), based on zinc layered hydroxide (ZLH) as host release material, was successfully prepared through coprecipitation method. The as-produced organic-inorganic nanolayered material, valerate nanohybrid, VAN, shows the formation of a new peak at lower 2 angle with basal spacing of 19.8Å with no ZnO reflections, which indicate that the intercalation of anion between the inorganic ZLH interlamellae was accomplished. The elemental, FTIR, and ATR analyses of the nanohybrid supported the fact that the intercalation with the percentage anion loading was calculated to be 23.0% (w/w). The thermal stability property of the resulting nanohybrid was enhanced compared to the unbound anion. Field emission scanning electron micrograph of the ZnO has a nonuniform granular structure but transforms into flake-like structure with various sizes after the intercalation process. Release kinetics of anion from the interlayer of intercalated compound exhibited a slow release behavior governed by the pseudo-second-order kinetic model at different pHs of aqueous media. The valerate anion was released from VAN with the highest release rate at pH 4. These findings provide the basis to further development of controlled release formulation for insect pheromone based on ZLH intercalation.

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“…The LZHA exhibited layered structures as evidenced from their X-ray diffraction (XRD) patterns, which showed intense (0 0 l) diffraction peaks in the low angle range and asymmetric reflections in the range of high angles. Such features can be explained on the basis of stacking order of brucite-like sheets parallel and equidistant but twisted and/or translated against each other [38][39][40]. The product obtained at 140 1C ( Fig.…”

Section: Powder X-ray Diffractionmentioning

confidence: 99%

Simple non-basic solution route for the preparation of zinc oxide hollow spheres

Ashoka

Thipperudraiah²,

Chandrappa

2012

Physica E: Low-dimensional Systems and Nanostructures

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a b s t r a c tDespite considerable efforts undertaken in a rapidly developing area of materials research, controlled synthesis of nanostructured ZnO is still a matter of intensive research. Herein, we report a facile base free approach for the fabrication of nanostructured ZnO hollow spheres. In the synthesis, ethylene glycol has been introduced as solvent and crystal-growth modifier and zinc acetate has been used as zinc precursor and also a source of soft template. ZnO nanoparticles of diameter $ 25 nm are assembled into highly regular hollow spheres. The powder X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), energy dispersive X-ray spectroscopy (EDS), photoluminescence (PL) and UV-visible spectroscopy have been used to characterize the crystal structure, morphology, composition and optical properties. Powder XRD pattern of ZnO confirms the formation of the wurtzite structure. Presence of oxygen deficiency in the prepared ZnO product is revealed by Raman and EDS studies. Strong emission at 422 nm with three weak emissions at 400, 484 and 529 nm were observed by PL spectrum. The growth mechanism for the formation of ZnO hollow spheres has been discussed on the basis of the growth model for the polar ZnO crystals.

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Preparation of Layered Zinc Hydroxide/Surfactant Nanocomposite by Pulsed-Laser Ablation in a Liquid Medium

Cited by 150 publications

References 27 publications

Precipitation of monodisperse ZnO nanocrystals via acid-catalyzed esterification of zinc acetate

Precipitation of monodisperse ZnO nanocrystals via acid-catalyzed esterification of zinc acetate

Synthesis and Characteristics of Valeric Acid-Zinc Layered Hydroxide Intercalation Material for Insect Pheromone Controlled Release Formulation

Simple non-basic solution route for the preparation of zinc oxide hollow spheres

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