Microwave-assisted hydrothermal synthesis and characterization of ZnO nanorods

Ocakoğlu, Kasım; Mansour, Shehab A.; Yıldırımcan, Saadet; Al-Ghamdi, Ahmed A.; El-Tantawy, Farid; Yakuphanoğlu, F.

doi:10.1016/j.saa.2015.03.106

Cited by 97 publications

(36 citation statements)

References 38 publications

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“…Therefore, many efforts have been made to synthesize ZnO-based semiconductors with different morphologies for specific devices, such as nanorods, nanobelts, nanosheets, microrod/microtube arrays, quantum dots and other complex hierarchical micro/nanostructures [7,8]. Synthetic routes to ZnO nanoparticles include modified polymeric precursor (MPP) [9], sputtering [10,11], hydrothermal [12], solvothermal [13,14], sol-gel [15,16], ultrasonic irradiation [17], microwave-assisted hydrothermal (MAH) [6,18,19], and zinc-precursor thermal decomposition with free-solvent [20,21] methods. The MPP method is one of the most common chemical synthesis of inorganic semiconductor materials due to its simplicity and low cost.…”

Section: Introductionmentioning

confidence: 99%

The interplay between morphology and photocatalytic activity in ZnO and N-doped ZnO crystals

et al. 2017

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Photocatalytic materials can perform oxidative and reductive reactions over their surfaces when excited with light. Intrinsic characteristics of the material such as superficial area, morphological structure, and crystalline phase exposition play a fundamental role in the corresponding reaction paths. However, especially in doped semiconductors, as ZnO:N, less is known about how the synthesis parameters affect the morphologies and the photocatalytic activity simultaneously. To solve this issue, ZnO and ZnO:N samples were obtained using microwave-assisted hydrothermal and modified polymeric precursor methods of synthesis. Samples morphologies were characterized by TEM and FE-SEM. Crystallographic phases were observed by XRD and optical characteristics by DRS. XPS results confirmed the doping process. Degradation of Rhodamine-B and Cr(VI) reduction were employed as probe reactions to investigate their photocatalytic activity. Although the crystallographic structure of these powders maintains the ZnO hexagonal wurtzite structure, the optical properties and morphologies, and photocatalytic activities present different behaviors. Also, density functional theory calculations were employed to determine the specific features related to electronic structure, morphology, and photocatalytic activity.Different synthesis methods produce a singular behavior in the physicochemical properties of materials, and the doping effect produces various modifications in RhB degradation and Cr(VI) reduction for each synthesis method. Crystal face exposition and morphologies are related to the improvement in the photocatalytic activity of the materials.

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Section: Introductionmentioning

confidence: 99%

The interplay between morphology and photocatalytic activity in ZnO and N-doped ZnO crystals

et al. 2017

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“…Additionally, lattice strain dependent on external compressive stress of (101), (002), (100) peaks are calculated 0.13, 0.05, 0.11%for ZnO nanoplate and 0.19, 0.11, 0.14% for FTO-ZnO, respectively with the average lattice strain of 0.07% for ZnO nanoplates and of 0.13% for FTO-ZnO. The Debye-Scherer method is commonly used to determine the crystalline size, but this method does not include the peak broadening [29,30]. In this regard, crystalline size and strain calculation of ZnO nanoplate and FTO-ZnO photoanode can be carried out by using Williamson Hall Plot.…”

Section: Zno Nanoplate and Fto-zno Photoanode Characterizationmentioning

confidence: 99%

Investigation of Vegetable Tannins and Their Iron Complex Dyes for Dye Sensitized Solar Cell Applications

Çakar

Güy

Özacar

et al. 2016

Electrochimica Acta

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“…The work of Eixenberger et al [25] showed that the presence of potential buffering systems in the biological material studied dramatically impacts the dynamics of ZnO-NPs, including their kinetics of dissolution, complex precipitate formation and toxicity profiles. ZnO has been synthesized by different methods [26][27][28][29][30][31][32][33][34][35][36][37][38]. To control the size and morphology of the ZnO particles synthesized, researchers have used surfactants [39], a strategy employed in the current work.…”

Section: Introductionmentioning

confidence: 99%

Controlled synthesis of ZnO nanoparticles and evaluation of their toxicity in Mus musculus mice

et al. 2018

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Zinc oxide nanoparticles (ZnO-NPs) of different sizes and morphology were synthesized. The variables analyzed were zinc precursor concentration, the nature of the synthesis solvent and the concentration of surfactant agent. The solids synthesized were characterized using IR spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). Considering the nature of the synthesis process, a tentative model of the mechanism of formation of the ZnO-NPs was proposed. ZnO-NPs with spheroidal morphology were obtained with a 10 mM CTAB concentration and these were selected to study their toxicity. For this study, Mus musculus mice were therefore given an oral dose of 50 mg ZnO/kg body weight (b.v.). Biopsies obtained from the livers and kidneys of the mice studied were analyzed using TEM and atomic absorption. The biopsy of the liver of the mouse given a dose of ZnO-NPs showed evidence of steatosis. The atomic absorption results showed the accumulation of Zn in both the liver and the kidney of the mouse.

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Microwave-assisted hydrothermal synthesis and characterization of ZnO nanorods

Cited by 97 publications

References 38 publications

The interplay between morphology and photocatalytic activity in ZnO and N-doped ZnO crystals

The interplay between morphology and photocatalytic activity in ZnO and N-doped ZnO crystals

Investigation of Vegetable Tannins and Their Iron Complex Dyes for Dye Sensitized Solar Cell Applications

Controlled synthesis of ZnO nanoparticles and evaluation of their toxicity in Mus musculus mice

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