Synthesis of zinc molybdate and zinc phosphomolybdate nanopigments by an ultrasound assisted route: Advantage over conventional method

Karekar, Sammit Ekanath; Bhanvase, Bharat A.; Sonawane, S. H.; Deosarkar, M. P.; Pinjari, Dipak V.; Pandit, Aniruddha B.

doi:10.1016/j.cep.2014.11.010

Cited by 64 publications

(24 citation statements)

References 35 publications

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“…Additionally, in the presence of high intensity ultrasound and initiator, the effect of temperature, surfactant concentration and monomer concentration on the extent of conversion has been studied for the semi-batch emulsion copolymerization of methylmethacrylate and styrene [24]. Recently, zinc phosphomolybdate nanoparticle was synthesized by ultrasonic irradiation [32]. It was found that the average particle size is smaller compared to conventional precipitation method, resulting from improving the solute transfer rate and rapid nucleation in the presence of cavitation induced by ultrasonic wave; and Bhanvase et al [33] employed ultrasound assisted in-situ semi-batch emulsion polymerization to prepare polyaniline (PANI) and PANI/ ZnMoO 4 nanocomposite with different loading of ZnMoO 4 (ZM) nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of silver/titanium dioxide composite nanoparticles in ethylene glycol with alkaline solution through sonochemical process

Jhuang

Cheng

2016

Ultrasonics Sonochemistry

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This paper aims to study fabrication and characterization of silver/titanium oxide composite nanoparticle through sonochemical process in the presence of ethylene glycol with alkaline solution. By using ultrasonic irradiation of a mixture of silver nitrate, the dispersed TiO2 nanoparticle in ethylene glycol associated with aqueous solution of sodium oxide yields Ag/TiO2 composite nanoparticle with shell/core-type geometry. The powder X-ray diffraction (XRD) of the Ag/TiO2 composites showed additional diffraction peaks corresponding to the face-centered cubic (fcc) structure of silver crystallization phase, apart from the signals from the cores of TiO2. Transmission electron microscopy (TEM) images of Ag/TiO2 composites, which average particle size is roughly 80 nm, reveal that the titanium oxide coated by Ag nanoparticle with a grain size of about 2-5 nm. Additionally, the formation of silver nanoparticles on TiO2 was monitored by ultraviolet visible light spectrophotometer (UV-Vis). As measured the optical absorption spectra of as-synthesized Ag nanoparticle varying with time, the mechanism of surface formatting silver shell on the cores of TiO2 could be explored by autocatalytic reaction; the conversion of Ag particle from silver ion is 98% for the reaction time of 1000 s; and the activity energy of synthesizing Ag nanoparticles on TiO2 is 40 kJ/mol at temperature ranging from 5 to 25°C. Hopefully, this preliminary investigation could be used for mass production of composite nanoparticles assisted by ultrasonic chemistry in the future.

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Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of silver/titanium dioxide composite nanoparticles in ethylene glycol with alkaline solution through sonochemical process

Jhuang

Cheng

2016

Ultrasonics Sonochemistry

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“…[28][29][30][31][32] It has been reported that ultrasound method for synthesis of core shell nanoparticles is energy efficient, energy required to synthesize per unit weight of CeO 2 /ZnO is 18 (kJ/gm) for US method and 140 (kJ/gm) for conventional method. Thus, US approach proved to be energy efficient as it has saved more than 80% of energy utilized by conventional method and also reduction in reaction time.…”

Section: Reaction Yieldmentioning

confidence: 99%

Ultrasound and Conventional Synthesis of Ceo<sub>2</sub>/Zno Nanocomposites and Their Application in the Photocatalytic Degradation of Rhodamine B Dye

Shah¹,

Bhangaonkar²,

Pinjari³

et al. 2017

JAN

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Abstract. CeO 2 /ZnO composite nanoparticles are synthesized by using in-situ precipitation method, without any stabilizers, via conventional i.e. non-ultrasound (NUS) and ultrasound-assisted processing technique (US). The structure, morphology, particle size and % weight loss of the synthesized nanoparticles were analyzed by using X-ray powder diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) to establish the formation of core shell type nanomaterials with an average particle size under 15 nm. The effectiveness of the synthesized core shell morphology of CeO 2 /ZnO (catalyst) for the photocatalytic degradation of Rhodamine B (RhB) dye has also been investigated. It has been observed that the catalysts prepared by sonochemical method exhibit higher photocatalytic activity as compared to the catalysts prepared by the conventional method. It was also found that the ultrasound-assisted technique is an energy efficient method as it saves more than 80% of energy along with a substantial reduction in reaction time, as compared to conventional synthesis technique.

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“…There are several publications [20][21][22][23], which show that the method of ultrasonic treatment can be used for synthesis of, mostly, molybdate double salts using salts (nitrates) of these metals. Data of metal oxides use as initial compounds are absent.…”

Section: Introductionmentioning

confidence: 99%

INFLUENCE OF ULTRASONIC TREATMENT ON PROPERTIES OF ZnO-MoO3 OXIDE SYSTEM

Sachuk¹,

Kopachevska²,

Кузнецова³

et al. 2017

ChChT

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Abstract. 1 The effect of ultrasonic treatment (UST) on the physical-chemical properties of zinc-molybdenum system ZnO-MoO 3 (Zn: Mo = 15:85, 25:75, 50:50, 75:25) was studied. Using XRD, FT-IR and DTA methods it was shown that such treatment forms molybdenum suboxides (Magneli phases of Мо 4 О 11 and Мо 8 О 23 composition) and zinc molybdates (α-ZnMoO 4 , ZnMo 8 O 10 ). Specific character of reagents ratio on the formation of these compounds was determined. It was shown that UST changes porous structure of the compositions -non-porous mixture of oxides transforms into composites with micro-and mesopores, resulting in the increase of specific surface and significant reduction of particles size.

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Synthesis of zinc molybdate and zinc phosphomolybdate nanopigments by an ultrasound assisted route: Advantage over conventional method

Cited by 64 publications

References 35 publications

Fabrication and characterization of silver/titanium dioxide composite nanoparticles in ethylene glycol with alkaline solution through sonochemical process

Fabrication and characterization of silver/titanium dioxide composite nanoparticles in ethylene glycol with alkaline solution through sonochemical process

Ultrasound and Conventional Synthesis of Ceo<sub>2</sub>/Zno Nanocomposites and Their Application in the Photocatalytic Degradation of Rhodamine B Dye

INFLUENCE OF ULTRASONIC TREATMENT ON PROPERTIES OF ZnO-MoO3 OXIDE SYSTEM

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