Synthesis and optical properties of ZnO nanostructures in imidazolium-based ionic liquids

Sabbaghan, Maryam; Shahvelayati, Ashraf Sadat; Bashtani, Seyede Elahe

doi:10.1016/j.solidstatesciences.2012.05.034

Cited by 25 publications

(12 citation statements)

References 24 publications

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“…[3] The main advantage in using DILs instead of the corresponding ILs lies in the possibility of further modulating their properties varying the nature of the spacer. [4] In fact, imidazolium DILs have been successfully used as electrolytes in dye sensitized solar cells (DSSCs), [5] as efficient replacements of organic phase-change materials (the heat capacity of DILs is noteworthy higher than that of the corresponding monocations), [6,7] as solvents for the controlled pyrolysis of cellulose, [8] as templates for the synthesis of ZnO nanostructures in water, [9,10] as surfactants (due to a better capacity of aggregation with respect to monocationic analogues), [11] as efficient extractors of phenolic compounds from oil mixtures [12] or of triazole fungicides from contaminated water, [13] etc.…”

Section: Introductionmentioning

confidence: 99%

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

et al. 2019

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The cathodic reduction of dicationic imidazolium bromides, whose spacer is either an aliphatic chain or a xylyl group, leads to the formation of the corresponding N‐heterocyclic carbenes (NHCs), which were isolated as the corresponding thiones, after reaction with elemental sulfur. The behaviour of the dications was compared with the corresponding monocations. The behaviour of dicarbenes depends on the nature of the spacer. This study evidenced that dicarbenes deriving from xylyl dications are less stable than the corresponding aliphatic ones (giving lower yields in thiones), due to a debenzylation reaction. On the other hand, the yields in thiones starting from aliphatic dications are higher than the corresponding monocations, suggesting a cooperative reduction at the electrode of the two imidazolium moieties. The cathodic process was confirmed using the co‐electrogenerated hydrogen to reduce 2,2,2‐trifluoroacetophenone to the corresponding alcohol.

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Section: Introductionmentioning

confidence: 99%

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

et al. 2019

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“…According to the literature, Zn (OH) 4 2− in the solution is the main zinc species at pH 14 . It seems that, at a certain concentration of IL, bilayer‐like micelles were formed .…”

Section: Methodsmentioning

confidence: 96%

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Ezzatzadeh

Hossaini

2020

Applied Organom Chemis

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In this research a novel and efficient procedure for the preparation of phosphonate derivatives using the reaction of 2,4‐dihydroxyacetophenone, isopropenylacetylene, 2‐amino‐N‐alkyl benzamide, dialkyl acetylenedicarboxylates and trimethyl phosphite or triphenyl phosphite in the presence of reusable 2D ZnO/Fe3O4 nanocomposites in water at room temperature was investigated. The 2D ZnO/Fe3O4 nanocomposites were synthesized using ionic liquid [OMIM]Br as a stabilizer and soft template. In addition, the power of antioxidant for some prepared compounds was studied using trapping of radicals by DPPH and a ferric reduction activity potential experiment. As a result, compound 6f displayed a noteworthy power for trapping of free radicals and 6b exhibited excellent reducing power compared with standards (BHT and TBHQ). Moreover, the antimicrobial power of some prepared quinazolinone phosphonates was proved by employing the disk diffusion experiment on two kinds of bacteria, Gram‐positive and ‐negative bacteria. The obtained outcomes of disk diffusion test showed that these compounds prevented bacterial growth. Some advantages of this procedure are: short time of reaction, high yields of product and easy separation of catalyst and products.

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“…This work revealed as well that the template and the pH control the direction of growth of ZnO crystals and the shape of nanomaterials obtained. The final band gap values of ZnO with different morphology ranged around 2.88-3.16 eV [133]. Alammar et al have studied the effect of five different ILs on ZnO morphologies, and claimed that the habitus and morphology come as the system naturally tends to reduce the total surface energy during formation; it is to note that the anion of the IL is proposed to be interacting with the ZnO surface during the growth [134].…”

Section: Ionic Liquid As Solvents For Zno Nanostructuresmentioning

confidence: 99%

Green Synthesis of Zinc Oxide Nanostructures

Işık¹,

Hilal²,

Horzum³

2019

Zinc Oxide Based Nano Materials and Devices

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ZnO-based nanomaterials have been proven to be of great use for several leading applications since the beginning of nanoscience due to the abundance of zinc element and the relatively easy conversion of its oxide to nanostructures. Nowadays, ZnO as nanoparticles, nanowires, nanofibers as well as plenty of other sophisticated nanostructures takes place among the pioneer nanomaterials employed in the photovoltaic systems, fuel cells, and biomedical fields. Nevertheless, optimizing energy consumption and being eco-friendly are the challenging requirements that are still to be overcome for their synthesis. Green chemistry has been strongly presented recently in the scientific arena as an adequate potential alternative; worldwide investigations have been held on subjects involving bacteria, fungus, or algae-based synthesis as efficient options, and some of the intriguing scientific findings on this subject are reported hereafter.

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Synthesis and optical properties of ZnO nanostructures in imidazolium-based ionic liquids

Cited by 25 publications

References 24 publications

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Green Synthesis of Zinc Oxide Nanostructures

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Synthesis and optical properties of ZnO nanostructures in imidazolium-based ionic liquids

Cited by 25 publications

References 24 publications

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

2D ZnO/Fe3O4 nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Green Synthesis of Zinc Oxide Nanostructures

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Product

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2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives