scholarly journals The Effect of Solvent-Modification on the Physicochemical Properties of ZnO Nanoparticles Synthesized by Sol-Gel Method

2021 ◽  
Vol 17 (1) ◽  
pp. 46-52
Author(s):  
Zainab Yousif Shnain ◽  
Manal Afham Toma ◽  
Basheer A. Abdulhussein ◽  
Najat J. Saleh ◽  
Mohammed Ibrahim ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Zinc Acetate Dihydrate ◽  
Sol Gel ◽  
Average Diameter ◽  
Zno Nanoparticle ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Atomic Force ◽  
Solvent Type

This study investigated the solvent effect on the synthesis of Zinc Oxide (ZnO) nanoparticle using sol-gel method. Zinc acetate dihydrate and oxalic acid were used as a chemical precursor for the synthesis of the ZnO nanoparticle considering the effects of various solvents. The effect of using water, propanol, or ethanol as solvent during the synthesis were examined. The resultant gel in the aqueous and organic moderate solvent was thermally cracked into ZnO nanoparticles at 450 °C under atmospheric pressure. The results showed that the solvent type has a significant effect on the morphology and particles size of the ZnO nanoparticles synthesized. Atomic Force Microscopy (AFM) was used to investigate the microstructure of the nanoparticles. The crystalline and chemical structure of the prepared ZnO nanoparticle were studied by X-ray diffraction (XRD) and Fourier Transform Infrared spectroscopy (FTIR). The average diameter of nano-size particles obtained for ethanol, propanol and water are 79.55 nm, 83.86 nm and 85.59 nm, respectively. ZnO particles showed higher degree of crystalline in water compared to other solvents under current investigation. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 

Effect of Molar Concentration on Electrically Resistive Lead Titanate Thin Films by Simple Sol-Gel Method

2013 ◽  
Vol 832 ◽  
pp. 379-383 ◽  
Author(s):  
Nurbaya Zainal ◽  
Habibah Zulkefle ◽  
Mohamad Rusop
Keyword(s):  
Thin Films ◽  
Lead Titanate ◽  
Sol Gel ◽  
Physical Property ◽  
Molar Concentration ◽  
Solar Simulator ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Atomic Force

Lead titanate thin films were successfully prepared using a simple sol-gel method. In the present study extra Pb excess was not taken into consideration in such a way that the ratio of Pb:Ti is 1:1. Different molar concentration (0.1, 0.2, 0.3, 0.4, and 0.5) involved in this study and it was found that the solutions increased in acidic level by the increment of molar concentration that being measured by pH and conductivity meter (JENWAY-3540). It also indicated that the solutions were electrically resistive at low concentration which might due to the existence of lead and oxygen ionic bonding. The solutions were then deposited onto cleaned glass substrate by spin coating technique indeed to have better thin film homogeneity at room temperature. The prepared thin films were characterized on electrical property considering the resistivity measured by solar simulator (BUKOH KEIKI EP-2000). After that structural and physical property of thin films were observed by atomic force microscopy (Park System, XE-100).

Fabrication and Characterization of MgAl2O4 Thin Films by Sol-Gel Method

2011 ◽  
Vol 216 ◽  
pp. 514-517 ◽  
Author(s):  
Cheng Hsing Hsu ◽  
Jenn Sen Lin ◽  
His Wen Yang
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Annealing Treatment ◽  
Annealed Film ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Microstructure Characteristics ◽  
Atomic Force ◽  
Surface Morphologies

This paper describes microstructure characteristics of MgAl2O4 thin films were deposited by sol-gel method with various annealing temperatures. Particular attention will be paid to the effects of an annealing treatment in air ambient on the physical properties. The annealed films were characterized using X-ray diffraction. The surface morphologies of annealed film were examined by scanning electron microscopy and atomic force microscopy. The dependence of the dielectric properties and microstructure characteristics on annealing temperature was also investigated.

Effect of Annealing Treatments on the Physical Characteristics of (Ca0.8Sr0.2)TiO3 Thin Films by Sol-Gel Method

2012 ◽  
Vol 512-515 ◽  
pp. 1171-1174
Author(s):  
Ching Fang Tseng ◽  
Yun Pin Lu ◽  
Hsin Han Tung ◽  
Pai Chuan Yang
Keyword(s):  
Physical Properties ◽  
Heating Temperature ◽  
Sol Gel ◽  
Annealing Treatment ◽  
Annealed Film ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Atomic Force ◽  
Surface Morphologies

This paper describes physical properties of (Ca0.8Sr0.2)TiO3 were deposited by sol-gel method with a fix per-heating temperature of 400oC for 60 min at various annealing temperatures from 600oC to 700oC for 60 min. Particular attention will be paid to the effects of an annealing treatment in air ambient on the physical properties. The annealed films were characterized using X-ray diffraction (XRD). The surface morphologies of annealed film were examined by atomic force microscopy and scanning electron microscopy.

Effect of Annealing Temperature on TiO2 Nanostructured Prepared by Sol-Gel Method

2013 ◽  
Vol 832 ◽  
pp. 763-766 ◽  
Author(s):  
S.K.M. Maarof ◽  
Mohamad Rusop ◽  
Saifollah Abdullah
Keyword(s):  
Raman Spectroscopy ◽  
Titanium Dioxide ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ethanol Acetic Acid ◽  
Triton X

Titanium Dioxide, TiO2 is one of the potential semiconductor materials. TiO2 has much application such as for pigments, oxygen sensors, and photocatalyst. Recently, the researcher study on the other application and revealed that this material has a great potential to be use in nanocoating area. The objective of this paper is to produce TiO2 nanostructured prepared by sol-gel method. Sol-gel was carried out using tetra (IV) isopropoxide (TTIP), absolute ethanol, Acetic Acid Glacial (GAA), Triton-X-100 and deionized water and all the solution was mixing by continuous stirring and heating. After finished prepare the sol-gel, solution will be spin coated onto glass substrate and annealed with different temperature for 2 hours. The particles were analyzed using Raman Spectroscopy to observe the crystallographic phase, and the morphology was evaluated through Atomic Force Microscopy (AFM). As a result, TiO2 that annealed at 450°C shows the better nanostructured compared to other annealing temperature. Keywords: Titanium Dioxide (TiO2); Sol-gel method ; Spin-coating ; Annealing process ; Raman spectroscopy

scholarly journals Fractal-Percolation Structure Architectonics in Sol-Gel Synthesis

2021 ◽  
Vol 22 (19) ◽  
pp. 10521
Author(s):  
Irina Kononova ◽  
Pavel Kononov ◽  
Vyacheslav Moshnikov ◽  
Sergey Ignat’ev
Keyword(s):  
Electron Microscopy ◽  
Atomic Force Microscopy ◽  
Porous Materials ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Fractal Percolation ◽  
Atomic Force ◽  
Percolation Structure

It was developed a new technique to assess micro- and mesopores with sizes below a few nanometers. The porous materials with hierarchical fractal-percolation structure were obtained with the sol-gel method. The tetraethoxysilane hydrolysis and polycondensation reactions were performed in the presence of salts as the sources of metal oxides. The porous materials were obtained under spinodal decomposition conditions during application of the polymer sol to the substrate surface and thermal treatment of the structures. The model is based on an enhanced Kepler net of the 4612 type with hexagonal cells filled with a quasi-two-dimensional projection of the Jullien fractal after the 2nd iteration. The materials obtained with the sol-gel method were studied using the atomic force microscopy, electron microscopy, thermal desorption, as well as an AutoCAD 2022 computer simulation of the percolation transition in a two-component system using the proposed multimodal model. Based on the results obtained, a new method was suggested to assess micro- and mesopores with sizes below a few nanometrs, which cannot be analyzed using the atomic force microscopy and electron microscopy.

scholarly journals SYNTHESIS OF ZnO-Аg NANOPARTICLES BY SOL-GEL METHOD

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Savka Janković ◽  
Dragana Milisavić ◽  
Tanja Okolić ◽  
Dijana Jelić
Keyword(s):  
Zno Nanoparticles ◽  
Wide Spectrum ◽  
Sol Gel ◽  
Synthesis Method ◽  
Material Surface ◽  
Characterization Methods ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Doped Zno

Zinc oxide is a highly applicable semiconductor material. Wide applica-tion of this nanomaterial is connected to wide spectrum of energy band gap, high bond en-ergy, great thermal conductivity, but also with its non-toxicity, antibacterial activity, bio-compatibility and biodegradability characteristics. The aim of this paper is synthesis and characterization of silver doped ZnO nanoparticles (ZnO:Ag NP) using sol-gel method. Ob-tained samples of silver doped ZnO nanoparticles were characterized by following tech-niques: Fourier-transform infrared spectroscopy (FTIR), UV/VIS spectrophotometry, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spec-troscopy (EDX). Efficiency of provided synthesis method was examined by FTIR spectros-copy. XRD determined the purity and crystallinity, and wurtzite structure of synthesized material. Surface morphology and the effect of doping were examined using SEM and EDX characterization methods. Results showed better conductivity after doping ZnO nanoparti-cles with silver. SEM micrographs showed ZnO:Ag NP in the form of nanorods with a par-ticle average size of 6 nm.

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