Synthesis of cerium oxide nanoparticles by microwave technique using propylene glycol as a stabilizing agent

Shirke, B. S.; Patil, A.A.; Hankare, P.P.; Garadkar, K. M.

doi:10.1007/s10854-010-0114-y

Cited by 28 publications

(13 citation statements)

References 15 publications

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“…This re-aggregation of the particles does not seem to be due to the sonication process by itself, but to the solution heating [ 55 ]. However, in the case of hybrid coatings, the stability and size of the CeO 2 nanostructure must remain after being added to the polymer matrix and, in these cases [ 56 , 57 , 58 ], the crystallite size can reach a critical value some moments before polymerization begins. A key observation is that due to the solution heating, there is an optimum sonication time to refine the crystallite size and control the polymerization process.…”

Section: Resultsmentioning

confidence: 99%

Intensification of Electrochemical Performance of AA7075 Aluminum Alloys Using Rare Earth Functionalized Water-Based Polymer Coatings

et al. 2017

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This work reports the effect of different amounts of ceria nanoparticles on UV resistance and barrier properties of water-based polyurethane (WPU) on glass and AA7075 aluminum alloy substrates. Hybrid coatings were synthesized from an aliphatic WPU–HDI (1,6-hexamethylene di-isocyanate) and cerium oxide nanoparticles (CeO2) with an average particle size distribution of about 25 nm. Different nanoceria amounts (1, 3 and 5 wt %), mixing times (30, 60 and 120 min) and methods to disperse the nanostructures into the polymer matrix (magnetic stirring and sonication) were evaluated. Initially, the dispersion of CeO2 nanoparticles embedded in the polymer matrix and displacement in the corrosion potential (Ecorr) were analyzed by confocal scanning laser microscopy (CLSM) and open circuit potential (Eocp) measurements. According to this behavior, the dispersion and water ratio required during the polymerization process were established. Coated samples obtained after the second stage were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and optical light microscopy. In addition, optical measurements on glass substrates were evaluated with UV-vis spectroscopy. The effect of the synthesis parameters on the corrosion behavior of WPU–CeO2/AA7075 systems was investigated with Eocp and electrochemical impedance spectroscopy (EIS) in a 3 wt % NaCl solution. In addition, the films were subjected to 180 h of accelerated weathering. The results show that the combination of specific nanoceria addition with the optimal synthesis parameters enhances optical transparence of WPU as well as barrier properties. From these, the coated specimens prepared with 3 wt % of ceria content and sonicated for 30 min showed a highly dispersed system, which results in a high charge transfer resistance. The observed properties in clear coats deposited on metallic substrates suggested an improvement in the appearance and less deterioration in UV exposure in comparison with pure WPU, enhancing the protective properties of the AA7075 aluminum alloy when exposed to a corrosive medium.

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Section: Resultsmentioning

confidence: 99%

Intensification of Electrochemical Performance of AA7075 Aluminum Alloys Using Rare Earth Functionalized Water-Based Polymer Coatings

et al. 2017

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“…Reaction mixture absorbs the microwave energy, which probably causes super heating followed by the formation of activation of bulk molecules (Table 2). Shirke et al (2011b) reported on synthesis of Titanium Oxide and Cerium Oxide by microwave method using cerium nitrate, propylene glycol, and ammonia as a precursors. Here calcination is not required because the microwave radiation is enough to form CeO 2 nanoparticles.…”

Section: Comparison Of Conventional and Microwave Methodsmentioning

confidence: 99%

Microwave-Assisted Sol–Gel Synthesis Of Metal Oxide Nanomaterials

Garadkar

Kadam

Park

2016

Handbook of Sol-Gel Science and Technology

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The main goal of this chapter is to fill the gap in contemporary literature on the basic scientific aspects of microwave-assisted sol-gel technique. In this chapter, we shall briefly consider the microwave-assisted sol-gel method adopted for the preparation of metal oxide nanoparticles with controlled particle size, morphology, and crystal structure. Now a days researchers are motivated by an advantages

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“… Cerium nitrate hexahydrate, ethylene glycol, oleic acid, and tert-butylamine Water Microwave-assisted method [ 89 ] 4. Cerium nitrate hexahydrate, propylene glycol, and ammonia Water Microwave technique [ 90 ] 5. Ceric ammonium nitrate and sodium hydroxide Water Microwave-mediated synthesis [ 91 ] …”

Section: Synthesis Of Nanoceriamentioning

confidence: 99%

Synthesis and biomedical applications of nanoceria, a redox active nanoparticle

2019

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Background Nanoceria has recently received much attention, because of its widespread biomedical applications, including antibacterial, antioxidant and anticancer activity, drug/gene delivery systems, anti-diabetic property, and tissue engineering. Main body Nanoceria exhibits excellent antibacterial activity against both Gram-positive and Gram-negative bacteria via the generation of reactive oxygen species (ROS). In healthy cells, it acts as an antioxidant by scavenging ROS (at physiological pH). Thus, it protects them, while in cancer cells (under low pH environment) it acts as pro-oxidant by generating ROS and kills them. Nanoceria has also been effectively used as a carrier for targeted drug and gene delivery in vitro and in vivo models. Besides, nanoceria can also act as an antidiabetic agent and confer protection towards diabetes-associated organ pathophysiology via decreasing the ROS level in diabetic subjects. Nanoceria also possesses excellent potential in the field of tissue engineering. In this review, firstly, we have discussed the different methods used for the synthesis of nanoceria as these are very important to control the size, shape and Ce 3+ /Ce 4+ ratio of the particles upon which the physical, chemical, and biological properties depend. Secondly, we have extensively reviewed the different biomedical applications of nanoceria with probable mechanisms based on the literature reports. Conclusion The outcome of this review will improve the understanding about the different synthetic procedures and biomedical applications of nanoceria, which should, in turn, lead to the design of novel clinical interventions associated with various health disorders. Graphical abstract

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Synthesis of cerium oxide nanoparticles by microwave technique using propylene glycol as a stabilizing agent

Cited by 28 publications

References 15 publications

Intensification of Electrochemical Performance of AA7075 Aluminum Alloys Using Rare Earth Functionalized Water-Based Polymer Coatings

Intensification of Electrochemical Performance of AA7075 Aluminum Alloys Using Rare Earth Functionalized Water-Based Polymer Coatings

Microwave-Assisted Sol–Gel Synthesis Of Metal Oxide Nanomaterials

Synthesis and biomedical applications of nanoceria, a redox active nanoparticle

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