Effect of different precursors in the chemical synthesis of ZnO nanocrystals

Gusatti, Marivone; Barroso, Gilvan; Campos, Carlos Eduardo Maduro de; Souza, Daniel Aragão Ribeiro de; Rosário, Jeane de Almeida do; Lima, Raquel Bohn; Milioli, Camila Cardoso; Silva, Laura Abreu; Riella, Humberto Gracher; Kuhnen, Nivaldo Cabral

doi:10.1590/s1516-14392011005000035

Cited by 24 publications

(10 citation statements)

References 16 publications

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“…ZnONPs were prepared by using the method of Gusatti et al (2011) [23] with slight modification. First, 0.5 M ZnNO 3 hexahydrate solution and 1 M NaOH solution were prepared, and the necessary solution was heated up to 70 • C and stirred continuously with a magnetic stirrer.…”

Section: Synthesis Of Znonpsmentioning

confidence: 99%

Biological efficacy of zinc oxide nanoparticles against diabetes: a preliminary study conducted in mice

et al. 2020

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The antidiabetic, hypoglycemic and oral glucose tolerance test (OGTT) activities of zinc oxide nanoparticles (ZnONPs) were assessed in mice. ZnONPs were prepared by reacting Zn(NO3)2.6H2O and NaOH solution at 70°C with continuous stirring and then characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques. Diabetes was induced by the intraperitoneal injection of streptozotocin (STZ) in mice, and then the blood glucose levels were determined by the glucose oxidase method. The experimental results revealed that ZnONPs suggestively (p<0.001) declined the blood glucose levels (39.79%), while these reductions were 38.78% for the cotreatment of ZnONPs and insulin, and 48.60% for insulin, respectively. In the hypoglycemic study, ZnONPs (8 and 14 mg/kg b.w) reduced approximately 25.13 and 29.15% of blood glucose levels, respectively. A similar reduction was found in the OGTT test, which is also a dose- and time-dependent manner. Overall, ZnONPs possess a potential antidiabetic activity, which could be validated by further mechanistic studies.

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Section: Synthesis Of Znonpsmentioning

confidence: 99%

Biological efficacy of zinc oxide nanoparticles against diabetes: a preliminary study conducted in mice

et al. 2020

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“…Different techniques are used to deposit ZnO films such as atomic layer deposition (ALD), physical vapor deposition (PVD), chemical vapor deposition (CVD), and sol–gel and screen-printing techniques. − Several precursors have been considered for the formation of ZnO films such as zinc chloride, zinc nitrate hexahydrate, zinc 2-ethylhexanoate, zinc nitrate, and zinc acetate. The precursor choice has a major influence on the structural morphology and properties of the film. − Zinc acetate is the most commonly used precursor for ZnO thin-film deposition. This precursor is inexpensive and soluble and has a low decomposition temperature, making it an ideal candidate for use in many deposition techniques such as metal–organic chemical vapor deposition (MOCVD), spray pyrolysis, sol–gel technique, and thermal evaporation. − Many papers report the structural, morphological, optical, and electrical properties of zinc oxide films prepared from zinc acetate.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Patterning of Zinc Oxide from Zinc Acetate Using Electron Beam Lithography for the Preparation of Hard Lithographic Masks

Chaker

Alty

Tian

et al. 2020

ACS Appl. Nano Mater.

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An approach is presented for nanoscale patterning of zinc oxide (ZnO) using electron beam (e-beam) lithography for future nanoelectronic devices and for hard lithographic masks. Zinc acetate (Zn4O(CH3COO)6) films were exposed using a scanning electron microscope (SEM), causing decomposition of Zn4O(CH3COO)6 into ZnO. The exposure of Zn4O(CH3COO)6 using an electron beam was successfully utilized to fabricate 12 nm zinc oxide lines with a 40 nm pitch on silicon. The chemical composition of zinc acetate (film before e-beam exposure) and ZnO (film after e-beam exposure) was investigated using X-ray spectroscopy (XPS). The Zn 2p shift peaks and the O 1s contribution confirmed the decomposition of zinc acetate into zinc oxide after exposure. To confirm this transformation into ZnO, the optical band gap of the film was determined and the electrical resistivity of the film was measured. The electrical resistivity and the optical band gap results revealed the transformation into a ZnO film with a band gap of 3.31 eV at room temperature and an electrical resistivity of 91.5 Ω cm. The ZnO patterns were used as a hard mask to etch silicon, and it showed a good selectivity of 27:1 for dry etching silicon using SF6 and C4F8.

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“…The morphologies are also dependent on the type of precursors and may result in other zinc compounds. In work by Gusatti et al 12 , a mixed phase material consisting of Zn 5 (OH) 8 [6] . This zinc compound is an intermediate product which transforms into ZnO upon heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Effects of precursor concentration and reaction time on sonochemically synthesized ZnO nanoparticles

et al. 2013

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The sonochemical reaction between Zn(NO 3 ) 2 and hexamethylenetetramine (HMT) resulted in different products depending on amounts of Zn(II) cations in the aqueous solution. Crystalline phase pure ZnO nanoparticles were obtained by using 0.05 M Zn(NO 3 ) 2 -HMT. This single phase was formed by low power sonication for 20 min in an ultrasonic bath at ambient conditions and its morphology did not change for the next 60 min. Higher concentrations of precursors (0.1 and 0.5 M) led to a mixture of zinc compounds including plate-like Zn 5 (OH) 8 (NO 3 ) 2 (H 2 O). In contrast, a mixed phase ZnO/Zn 5 (OH) 6 (CO 3 ) 2 and a single phase Zn 5 (OH) 6 (CO 3 ) 2 were formed when the precursor concentrations were decreased to 0.01 and 0.005 M, respectively. The resulting infrared absorption and ultraviolet/visible emission were dependent on the phases and defects in these zinc compounds.

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Effect of different precursors in the chemical synthesis of ZnO nanocrystals

Cited by 24 publications

References 16 publications

Biological efficacy of zinc oxide nanoparticles against diabetes: a preliminary study conducted in mice

Biological efficacy of zinc oxide nanoparticles against diabetes: a preliminary study conducted in mice

Nanoscale Patterning of Zinc Oxide from Zinc Acetate Using Electron Beam Lithography for the Preparation of Hard Lithographic Masks

Effects of precursor concentration and reaction time on sonochemically synthesized ZnO nanoparticles

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