Microwave-assisted synthesis and characterization of flower shaped zinc oxide nanostructures

Krishnakumar, T.; Jayaprakash, R.; Pinna, Nicola; Singh, V. N.; Mehta, B. R.; Phani, A.R.

doi:10.1016/j.matlet.2008.10.008

Cited by 140 publications

(61 citation statements)

References 24 publications

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“…Nowadays, a new method -microwave-assisted synthesis -is being used for the synthesis of nanomaterials. Due to this method's unique features, such as short reaction time, enhanced reaction selectivity, energy saving, and high reaction rate, 42,43 its use has been rapidly increasing. [43][44][45][46][47] Microwave heating not only reduces the chemical reaction times by several orders of magnitude but also suppresses side reactions, and thus improves the yield and reproducibility of a specific synthesis protocol.…”

mentioning

confidence: 99%

“…Due to this method's unique features, such as short reaction time, enhanced reaction selectivity, energy saving, and high reaction rate, 42,43 its use has been rapidly increasing. [43][44][45][46][47] Microwave heating not only reduces the chemical reaction times by several orders of magnitude but also suppresses side reactions, and thus improves the yield and reproducibility of a specific synthesis protocol. All these features represent important parameters that have to be considered during the development of "greener" synthesis methodologies, and therefore it can be expected that the microwave technique will also play a fundamental role in a future environmentally friendlier "synthetic nanotechnology.…”

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confidence: 99%

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Microwave-assisted synthesis of SnO2 nanorods for oxygen gas sensing at room temperature

Azam¹,

Habib²,

Salah³

2013

IJN

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confidence: 99%

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confidence: 99%

Microwave-assisted synthesis of SnO2 nanorods for oxygen gas sensing at room temperature

Azam¹,

Habib²,

Salah³

2013

IJN

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“…The absorption bands arround 2076 cm -1 and 1167 cm -1 are related to the stretching vibration of thiocarbonyl (C=S) and ethylene glycol (C-O) groups of the residual organic fuel and reducing agent. The spectra of all nanoparticles showed the peak arround 1410 cm -1 which is assigned to the Al-O stretching vibrations [17]. At this reaction temperature 200°C, only two characteristic strong bands of the RuxM1-xAl2O3 structure at arround 600 and 420 cm −1 are observed, confirming that the complexes were decomposed completely to RuxM1-xAl2O3 phase.…”

Section: Ft-ir Analysis Of Ruxm1-xal2o3 Npsmentioning

confidence: 73%

“…At this reaction temperature 200°C, only two characteristic strong bands of the RuxM1-xAl2O3 structure at arround 600 and 420 cm −1 are observed, confirming that the complexes were decomposed completely to RuxM1-xAl2O3 phase. These intense and weak absorption band are visible at 400-1062 cm -1 range are associated with the bending and stretching modes of the M-O and the M-O-M bonds corresponding to the formation of RuxM1-xAl2O3 nanostructures [18,19,20,21]. All peaks are identified and their positions are marked in the Fig.…”

Section: Ft-ir Analysis Of Ruxm1-xal2o3 Npsmentioning

confidence: 98%

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Microwave-Assisted Synthesis And Characterizatıon of Novel RuxM1-xAl2O3 Nanoparticles

Köksal

Hamad

2015

KSU J. Eng. Sci.

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ABSTRACT:In this study, three metal composed of nanostructures of RuxM1-xAl2O3 have been successfully synthesized by a simple and rapid microwave-assisted method using thiourea as the fuel and ethylene glycol (EG) as the reducing agent. In comparison with conventional heating, microwave-assisted method shortens the reaction time. The morphology, particle size and microstructure were analyzed using SEM and XRD. Microwave irradiation has yielded nanosized spherical phase particles. The mean grain size of the nanoparticles less than 100 nm. The FT-IR studies confirms the presence of metal-oxygen and metal-oxygen-metal bond. XRD and SEM of the synthesized nanoparticles show that the prepared nano compounds have low crystallinity and sphere and flower-like shape. Flower shape Ru0.63Co0.37Al2O3, Ru0.93Ni0.07Al2O3 and Ru0.54Cu0.46Al2O3 particles were obtained. Generally, the crystallite sizes were found in the range of 41-94 nm. The EDX analysis indicated that the elements of Ru, Fe, Co, Ni, Cu and Al existed in the products. The surface treatment of spray gold for elimination of charged effects were responsible for the signals of gold in the EDX analysis of the products. In other words, no impurities like N, S, P, Cl, etc. were detected except for Ru, Fe, Co, Ni, Cu and Al elements, indicating the nanoparticles were pure. Keywords: Nanoparticles, microwave-assisted, metal oxideYeni RuxM1-xAl2O3 Nano Parçacıkların Mikrodalga Destekli Sentezi ve Tanımlanması ÖZET: Bu çalışmada, yapısında üç metal bulunan nanoyapılar basit ve hızlı mikrodalga-yardımlı metod ile sentezlenmiştir. Bu sentezlerde tiyoüre yakıt olarak kullanılırken, etilen glikol (EG) yüzey gerilimini düşürücü ve indirgen olarak kullanılmıştır. Bilinen eski yöntemlerle kıyaslandığında bu yöntem reaksiyon süresini kısaltmıştır. Oksitlerin morfolojisi, parça büyüklüğü ve mikroyapısı SEM ve XRD ile analiz edilmiştir. Mikrodalga radyasyonu nanobüyüklükte küresel fazlı parçacıklar üretmiştir. Nanoparçacıkların ortalama tanecik boyutu 100 nm'den küçüktür. FT-IR çalışmaları metal-oksijen ve metal-oksijen-metal bağlarının varlığını doğrulamaktadır. Sentezlenen nanopartiküllerin XRD ve SEM sonuçları nano bileşiklerin düşük kristaliniteye sahip olduğunu, küresel ve çiçek-benzer şekillerde olduğunu göstermektedir. Çiçek tipi Ru0.63Co0.37Al2O3, Ru0.93Ni0.07Al2O3 ve Ru0.54Cu0.46Al2O3 parçacıkları elde edilmiştir. Genelde, kristal büyüklükleri 41-94 nm aralığındadır. EDX analizleri sentezlenen bileşiklerin yapısında Ru, Fe, Co, Ni, Cu ve Al elementlerinin varlığını doğrulamaktadır. Bileşiklerin EDX analizlerinde gözlemlenen Altın elementine ait pik, yük etkisini yok etmek amacıyla yüzeye püskürtülen Altın'a aittir. Ek olarak, yapılarda N, S, P ve Cl gibi safsızlıkların olmayışı ve yalnız Ru, Fe, Co, Ni, Cu ve Al elementlerin gözlemlenmesi, nanoparçacıkların saf olduğunu göstermektedir.

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Functional Principal of Nanotechnology in Clinical Research

Bera¹,

Ghosh²,

Mukhopadhyay³

2022

Nanomaterials in Clinical Therapeutics

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Microwave-assisted synthesis and characterization of flower shaped zinc oxide nanostructures

Cited by 140 publications

References 24 publications

Microwave-assisted synthesis of SnO2 nanorods for oxygen gas sensing at room temperature

Microwave-assisted synthesis of SnO2 nanorods for oxygen gas sensing at room temperature

Microwave-Assisted Synthesis And Characterizatıon of Novel RuxM1-xAl2O3 Nanoparticles

Functional Principal of Nanotechnology in Clinical Research

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