Controlled synthesis of nano-ZnO via hydro/solvothermal process and study of their optical properties

Moulahi, Ali; Sediri, F.

doi:10.1016/j.ijleo.2016.05.128

Cited by 15 publications

(7 citation statements)

References 50 publications

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“…This article reports further method development: we are testing four candidates for the size stabilizing precursors in a range of synthetic conditions. Hydrothermal syntheses of ZnO with the use of solvents [8], polymers [42][43][44], salicylic acid [45], amino acids [46] and surfactants [3] were reported earlier. Our current choice of stabilizers tested is not random.…”

Section: Introductionmentioning

confidence: 89%

“…ZnO is a semiconductor material with a direct wide band gap energy (3.37 ) and a large exciton binding energy ( 60) at room temperature [3]. It crystallizes in two main forms, hexagonal wurtzite, and cubic zinc blende.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays there is a multitude of synthetic methods to obtain ZnO. To name a few, vapor-phase transport [23], sol electrophoretic deposition [24], hydrothermal/solvothermal growth [3,16,25], arc discharge [26], chemical bath deposition [12,27,28], or electrochemical deposition [29][30][31] (both anodic [32][33][34] and cathodic [35,36]). They differ in their approach, cost, and ultimate results.…”

Section: Introductionmentioning

confidence: 99%

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Size Stabilizers in Two-electrode Synthesis of ZnO Nanorods

Korol

Yanchuk

Марчук

et al. 2021

Phys. Chem. Solid St.

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We modify and optimize a cheap, simple and effective synthesis of zinc oxide nanosized particles by electrodeposition. The core method encompasses the synthesis of ZnO product on the soluble zinc anode of the two-zinc-electrode cell emerged in aqueous NaCl. Resulting particles have the shape of cocoa fruit, thick in the middle and sharp at the edges. They have uniform shape, but broad size distributions with most of the ZnO product 1-2 µm long and 0,5-0,7 µm thick. Thus, auxiliary stabilizers are added to aqueous phase to reduce the size and narrow its distribution in the target product. Here we present the size stabilizing action of four successful stabilizers: urea, polyvinyl alcohol, Triton x-100 and Atlas G3300. All of them reduce particle size and polydispersity. An anionactive surfactant atlas is the most effective, giving an order of magnitude nanorod size reduction.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Size Stabilizers in Two-electrode Synthesis of ZnO Nanorods

Korol

Yanchuk

Марчук

et al. 2021

Phys. Chem. Solid St.

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“…The mechanism of increasing particle size depends on the coarsening-dominated system. Nucleation and growth and the degree of coarsening depend on the alcohol chain length (2-propanol and methoxy) [16].…”

Section: The Morphology Of Zno Nanorodsmentioning

confidence: 99%

Performance of Dye Sensitized Solar Cells (DSSCs) with ZnO Nanorod Electrode in Different Seed Solution

Pujiarti¹,

Pujiarti²,

Diantoro³

et al. 2021

JPSE

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Studies of comparing the performance of photoelectrode for dye-sensitized solar cells (DSSCs) continue to be carried out and developed. The ZnO nanorods as an electrode for DSSCs have been shown to have high electron collection due to the capability of electron photoexcitation and increased electron transport. Various methods of making ZnO nanorods have been studied and developed. However, the method requires controlled conditions under high temperature and pressure, thus limiting the commercialization of ZnO nanorods. Therefore, the seed solution-based hydrothermal method was chosen in the ZnO nanorod deposition process because it is an effective method, low-cost and easier fabrication process. The method of growing ZnO nanorod was carried out with three times of growing for 6 hours. ZnO nanorod was synthesized using different seed solutions, namely sample 1 and sample 2 by using methoxy and isopropanol, respectively. In this work, the SEM image shows the growth of ZnO nanorods vertically aligned on the FTO substrate and resulted in a smaller diameter for the isopropanol seed solution. The smaller diameter of the ZnO nanorod provides a larger surface area then increasing the total amount of dye attached to the ZnO nanorod and improve the photovoltaic performance.

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“…There are several methods to synthesize ZnO nanostructures, such as sol-gel [9], sputtering [10], ALD [11], chemical vapor deposition [12] and solvohydrothermal [13] methods. However, most of the techniques involve rigid conditions for instance high temperature, long reaction time [8].…”

Section: Introduction mentioning

confidence: 99%

Synthesis and Characterization of Na Doped ZnO Rods Grown by Simple Chemical Method

Karadeniz

Çiplak²,

Ekinci³

2020

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In this study, the effects of Na doped on the structure, morphology, and optical properties of the ZnO films deposited on glass substrate were investigated. The films were synthesized on glass substrates via a simple chemical method. Undoped and Na-doped ZnO films were obtained from an aqueous solution of the Zinc nitrate hexahydrate (Zn(NO3)2·6H2O), Sodium Nitrate (NaNO3) and hexamethylenetetramine-HMT (C6H12N4). Characterization of the films was examined using a Scanning electron microscope (SEM) and X-ray diffractometer (XRD), Ultraviolet-Visible spectrophotometer (UV-Vis) and X-Ray Photoelectron (XPS). The structure, morphology, and optical properties of the films were presented. The wurtzite ZnO films showed rod arrays morphology. The optical band gap increased with the doping of Na metal. The result shows that Na addition affected the properties of the ZnO films.

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Controlled synthesis of nano-ZnO via hydro/solvothermal process and study of their optical properties

Cited by 15 publications

References 50 publications

Size Stabilizers in Two-electrode Synthesis of ZnO Nanorods

Size Stabilizers in Two-electrode Synthesis of ZnO Nanorods

Performance of Dye Sensitized Solar Cells (DSSCs) with ZnO Nanorod Electrode in Different Seed Solution

Synthesis and Characterization of Na Doped ZnO Rods Grown by Simple Chemical Method

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