UV-Assisted Annealing Effect on the Performance of an Electrolyte-Gated Transistor Based on Inkjet Printed ZnO Nanoparticles Blended With Zinc Nitrate

AbstractStrenuous efforts have been employed to prepare zinc oxide (ZnO) with eco-friendly methods; however, few studies have reported the fabrication of ZnO using a sustainable procedure. In this study, spherical ZnO nanoparticles were successfully fabricated for photocatalysis applications using a simple and eco-friendly method using an arabinose sugar solution. The ZnO nanoparticles with a wurtzite structure were obtained by combining zinc nitrate and arabinose in water, followed by heating, evaporation, and calcinations at different annealing temperatures. The annealed ZnO photocatalysts were characterised via X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The findings revealed a hexagonal wurtzite structure and good crystallinity with crystallite size increasing from 18 to 31 nm by means of an increase in the annealing temperature. The photocatalytic performance was examined to determine the degradation of mix dye waste. The spherical ZnO nanoparticles showed mix pollutant degradation of 84 % in 25 min at 400 °C.

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Microwave-Assisted Combustion Synthesis of ZnO Nanoparticles

Journal of Chemistry ◽

10.1155/2013/562028 ◽

2013 ◽

Vol 2013 ◽

pp. 1-4 ◽

Cited By ~ 34

Author(s):

M. Kooti ◽

A. Naghdi Sedeh

Keyword(s):

Electron Microscopy ◽

Zno Nanoparticles ◽

Combustion Method ◽

Zinc Nitrate ◽

High Yield ◽

Fast Method ◽

Simple Method ◽

X Ray ◽

Microwave Assisted ◽

Average Size

A new and simple method was applied for the synthesis of ZnO nanoparticles with an average size of 20 nm. In this microwave-assisted combustion method, glycine as a fuel and zinc nitrate as precursor were used. The final product was obtained very fast with high yield and purity. The synthesized nanoscale ZnO was characterized by X-ray Diffraction (XRD), Energy Dispersive X-ray spectroscopy (EDX), and Fourier transform infrared spectroscopy (FT-IR). The size and morphology of the ZnO nanoparticles have been determined by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) techniques. This is a simple and fast method for the preparation of ZnO nanoparticles with no need for expensive materials or complicated treatments.

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Structural and Optical Properties of F-Doped ZnO Nanoparticles Synthesized by Co-Precipitation Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.675-676.69 ◽

2016 ◽

Vol 675-676 ◽

pp. 69-72

Author(s):

Krisana Chongsri ◽

Wanichaya Mekprasart ◽

Wisanu Pecharapa

Keyword(s):

Zno Nanoparticles ◽

Fluoride Concentration ◽

Precursor Solution ◽

Hexagonal Wurtzite Structure ◽

Ammonium Fluoride ◽

Zinc Nitrate ◽

Precipitation Process ◽

Vis Spectroscopy ◽

Doped Zno ◽

Co Precipitation

In this work, we reported the preparation of F-doped ZnO nanoparticles by facile precipitation process using zinc nitrate and ammonium fluoride as starting precursors for Zn and F, respectively dissolved in deionized water. The precursor solution was prepared at various fluoride composition ranging from 1-5 wt%. The as-precipitated powders were calcined at different temperature from 500 °C to 700 °C for 2 h. Effect of calcination temperature and fluoride concentration on structural, morphologies, optical and electrical properties were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), UV-Vis spectroscopy, respectively. XRD results indicated the complete formation of hexagonal wurtzite structure of ZnO. SEM micrographs showed the agglomeration for each sample that noticeably influenced by fluoride content.

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Microwave Synthesis of ZnO Nanoparticles for Enhanced Oil Recovery

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1024.83 ◽

2014 ◽

Vol 1024 ◽

pp. 83-86 ◽

Cited By ~ 7

Author(s):

Mohamad Sahban Alnarabiji ◽

Noorhana Yahya ◽

Sharifa Bee Abd Hamid ◽

Khairun Azizi Azizli ◽

Afza Shafie ◽

...

Keyword(s):

Zinc Oxide ◽

Enhanced Oil Recovery ◽

Oil Recovery ◽

Zno Nanoparticles ◽

Sol Gel ◽

Zinc Nitrate ◽

Nitrate Hexahydrate ◽

Zno Nps ◽

Nanoparticle Morphology ◽

Original Oil In Place

Synthesising zinc oxide nanoparticles to get certain specific characteristics to be applied in Enhanced oil recovery (EOR) is still challenging to date. In this work, zinc oxide (ZnO) nanoparticles were synthesised using the sol-gel method by dissolving zinc nitrate hexahydrate in nitric acid. The ZnO crystal and particles morphology and structure were determined using X-ray Diffractometer (XRD) and Field Emission Scanning Electron Microscope (FESEM). In this study, a microwave oven was used for annealing ZnO without insulating a sample in any casket. The results show that 30 and 40 minutes of annealing and stirring for 1 hour influenced the morphology and size of zinc oxide particles in nanoscale. These parameters could be tailored to generate a range of nanoparticle morphology (agglomerated nanoparticles in a corn-like morphology), a crystal size with the mean size of 70.5 and 74.9 nm and a main growth at the peak [10. EOR experiment were conducted by dispersing 0.10 wt% ZnO NPs in distilled water to form a ZnO nanofluid. Then the fluid was injected into the medium in the 3rd stage of the oil recovery to present EOR stage. It was found that ZnO nanofluid has the ability to extract 8% of the original oil in place (OOIP).

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Synthesis of ZnO and CuO nanoparticles via Sol gel method and Its Characterization by using XRD and FT-IR Analysis

10.21203/rs.3.rs-1234162/v1 ◽

2022 ◽

Author(s):

Monika Patel ◽

Sunita Mishra ◽

Ruchi Verma ◽

Deep Shikha

Keyword(s):

Particle Size ◽

Zno Nanoparticles ◽

Sol Gel ◽

Broad Band ◽

Zinc Nitrate ◽

Zno Nanoparticle ◽

Absorption Bands ◽

Characteristic Absorption ◽

Sol Gel Process ◽

Ft Ir

Abstract Nanotechnology is a completely unique branch of technology that offers with substances in a very small size between (1-100 nm) with various crystal shapes which include spherical nanoparticles, flower shaped, Nano rods, Nano ribbons, and Nano platelets. Metals have ability to produce large number of oxides. These metal oxides play an major role in many areas of chemistry, physics, material science and food science. In this research, Zinc Oxide (ZnO) and Copper (II) oxide nanoparticles were synthesized via sol-gel process using zinc nitrate and copper (II) nitrate as precursor respectively. The characterization of CuO and ZnO nanoparticles was done by using various techniques. X-ray Diffraction (XRD) indicates the crystallinity and crystal size of CuO and ZnO nanoparticle. Fourier transform infrared spectroscopy (FT-IR) was used to get the infrared spectrum of the sample indicating composition of the sample which contains various functional groups. XRD result shows the particle size of CuO at highest peak 29.40140 was 61.25 nm and the particle size of ZnO at highest peak 36.24760 was 21.82 nm. FT-IR spectra peak at 594.56 cm-1 indicated characteristic absorption bands of ZnO nanoparticles and the broad band peak at 3506.9 cm-1 can be attributed to the characteristic absorption of O-H group. The analysis of FT-IR spectrum of CuO shows peaks at 602.09, 678.39, and 730.19cm−1 which refer to the formation of CuO. A broad absorption peak noticed at 3308.2 cm−1 attributed to O–H stretching of the moisture content.

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Performance of ZnO nanoparticles for fire retardant and UV protection of pine wood

BioResources ◽

10.15376/biores.13.3.6963-6969 ◽

2018 ◽

Vol 13 (3) ◽

pp. 6963-6969

Author(s):

Higor Rogerio Favarim ◽

Lucas Oliveira Leite

Keyword(s):

Uv Radiation ◽

Zno Nanoparticles ◽

Sol Gel ◽

Fire Retardant ◽

Zinc Nitrate ◽

Uv Resistance ◽

Pine Wood ◽

Open Flame ◽

Fire Retardance ◽

Uv Lamp

The aim of this paper was to investigate the influence of zinc oxide (ZnO) nanoparticles on the resistance of pine wood to fire and ultraviolet (UV) radiation. The ZnO nanoparticles were prepared from aqueous zinc nitrate via a proteic sol-gel method. Dried samples were impregnated using immersion in an aqueous solution of ZnO nanoparticles in the amount of 1 wt.% wood. Samples were exposed to an open flame to test the fire retardance, and a high-pressure UV lamp was used to test the UV resistance. The results showed an improvement in the fire retardance and UV radiation resistance after the impregnation of ZnO nanoparticles.

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ZnO Nanoparticles on Si, Si/Au, and Si/Au/ZnO Substrates by Mist-Atomisation

Journal of Nanomaterials ◽

10.1155/2012/872856 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Z. Khusaimi ◽

M. H. Mamat ◽

N. Abdullah ◽

M. Rusop

Keyword(s):

Zno Nanoparticles ◽

Substrate Surface ◽

Zno Nanorods ◽

Zinc Nitrate ◽

Growth Patterns ◽

Visible Range ◽

Si Substrates ◽

Chemical Equations ◽

Support Size ◽

Pl Emission

ZnO nanoparticles were prepared on Si substrates by a mist-atomisation technique. Precursor of aqueous solution zinc nitrate and HMTA were released on substrates heated at 200, 300, and400°Cconfined in chamber box. The surface of Si substrate was varied, that is, gold-seeded Si (Si/Au), ZnO nanorods on Si/Au (Si/Au/ZnO), and just Si. The samples were subsequently analysed by X-ray diffraction, scanning electron microscopy, and photoluminescence (PL) spectroscopy to study their structural, surface morphology, and PL emission properties. Analysis from the XRD patterns of the films showed stronga-andc-axis lattice and of pure ZnO hexagonal wurtzite type. The crystallite size varied from 6 to 43 nm and was found to generally increase with increasing substrates' temperatures (Ts). SEM micrographs revealed granular-like structure throughout. Shifts pattern of PL emission at ultraviolet and visible range was found to support size changes observed. Both substrate surface type and deposition temperature were found to significantly affect crystalline growth of ZnO nanoparticles. Chemical equations and justification for growth patterns are also suggested.

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Preparation of ZnO nanoparticles by a surfactant-assisted complex sol–gel method using zinc nitrate

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-009-1959-5 ◽

2009 ◽

Vol 51 (2) ◽

pp. 198-203 ◽

Cited By ~ 44

Author(s):

Y. L. Zhang ◽

Y. Yang ◽

J. H. Zhao ◽

R. Q. Tan ◽

P. Cui ◽

...

Keyword(s):

Zno Nanoparticles ◽

Sol Gel ◽

Zinc Nitrate ◽

Gel Method ◽

Sol Gel Method ◽

Surfactant Assisted

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Effect of ZnO Nanoparticles Synthesized by Precipitation Method on Cure Characteristics and Morphology of EPDM Foam

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1025-1026.525 ◽

2014 ◽

Vol 1025-1026 ◽

pp. 525-530 ◽

Cited By ~ 3

Author(s):

Rudeerat Suntako

Keyword(s):

Zno Nanoparticles ◽

Cell Structure ◽

Compressive Load ◽

Zinc Nitrate ◽

Hexagonal Structure ◽

Precipitation Method ◽

Maximum Torque ◽

Cure Characteristics ◽

Nitrate Tetrahydrate ◽

Cure Time

ZnO nanoparticles synthesized by precipitation method using zinc nitrate tetrahydrate and sodium hydroxide as starting materials. ZnO nanoparticles synthesized exhibited a crystalline structure with hexagonal structure. The average primary size of ZnO synthesized around 22.71 nm and the specific surface area around 28.17 m2/g. EPDM foam used oxy-bis benzene sulfonylhydrazide (OBSH) as blowing agent and ZnO nanoparticles synthesized as activator of sulphur vulcanization. The effect of ZnO nanoparticles synthesized compared with conventional ZnO on cure characteristics and morphology of EPDM foam were investigated. The result showed that the maximum torque (MH) increased, optimum cure time (t90) and scorch time (T5) decreased with increasing ZnO nanoparticles synthesized loading. The cell structure of EPDM foam was spherulite and smaller when increased ZnO nanoparticles synthesized loading. The compressive load value increased with increasing ZnO nanoparticles synthesized loading which may be attributed to thickness of the cell wall and hardness increased. ZnO nanoparticles synthesized could be reduced successfully from 5 to 3 phr (40%) for EPDM foam.

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