Zinc Oxide Nanorods Characteristics Prepared by Sol-Gel Immersion Method Immersed at Different Times

2013 ◽  
Vol 667 ◽  
pp. 375-379 ◽  
Author(s):  
M. Awalludin ◽  
Mohamad Hafiz Mamat ◽  
Mohd Zainizan Sahdan ◽  
Z. Mohamad ◽  
Mohamad Rusop
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Immersion Time ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Immersion Method ◽  
X Ray ◽  
Oxide Nanorods ◽  
Scanning Electron

This paper focus on zinc oxide (ZnO) nanorods prepared using sol-gel immersion method immersed at different time. Immersion times have been varied 1~24 hr and the characteristics of each sample have been observed. The effects of immersion time on ZnO nanorods thin films have been studied in surface morphology and structural properties using Scanning Electron Microscopy (SEM) and X-ray diffractometer (XRD), respectively.

scholarly journals FABRICATION OF SAND/ZINC OXIDE/TITANIUM DIOXIDE NANOCOMPOSITE AS PHOTOCATALYST

2019 ◽  
Vol 5 (2) ◽  
pp. 122
Author(s):  
Nur Jannah Idris
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Zinc Oxide ◽  
Titanium Dioxide ◽  
Active Sites ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Rutile Phase ◽  
Immersion Method ◽  
Scanning Electron

 In this work, a nanocomposite photocatalyst was fabricated by growing zinc oxide (ZnO) and titanium dioxide (TiO2) on the sand as a substrate. The initial sand/ZnO was fabricated via sol-gel immersion method for 4 h at 95℃. Furthermore, the sand/ZnO/TiO2 was fabricatedusing hydrothermal method for 5 h at 150℃. Based on field emission scanning electron microscopy (FESEM) analysis, the fabricated sand/ZnO/TiO2 consists of random formation of hexagonal ZnO nanorods and two pyramidal spindle ends of TiO2 nanorods. The addition of TiO2 on top of ZnO nanorods increased the number of active sites which enables more contaminants to be absorbed thus enhanced the photocatalysis process. Moreover, based on the micro-Raman spectra, the synthesized TiO2 was in rutile phase and the ZnO peak was unobservable due to the overlapping with TiO2 peak. Based on its morphological and structural properties, the fabricated sand/ZnO/TiO2 nanocomposite was potential to be applied as photocatalyst.

Structural Properties of Sn-Doped ZnO Thin Films Deposited on Glass Substrate Using Sol-Gel Immersion Method

2015 ◽  
Vol 1109 ◽  
pp. 568-571
Author(s):  
Shafura Karim ◽  
Uzer Mohd Noor ◽  
M.H. Mamat ◽  
Shuhaimi Abu Bakar ◽  
Salman A.H. Alrokayan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Scanning Electron Microscopy ◽  
Zinc Oxide ◽  
Glass Substrate ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Immersion Method ◽  
Doped Zno ◽  
Scanning Electron

Tin-doped Zinc Oxide (Sn-doped ZnO) thin films were prepared using zinc acetate dehydrate as a starting material by sol-gel immersion method. The doping concentrations were varied at 0 at.%, 1.0 at.%, 2.0 at.% and 3.0 at.%. The synthesized samples were characterized by Field Emission Scanning Electron Microscopy (FESEM).

Optical Properties of Al Doped Zinc Oxide Nanorods Thin Film Deposited by Immersion Technique

2013 ◽  
Vol 667 ◽  
pp. 388-392
Author(s):  
S.Z. Muhamed ◽  
Mohamad Hafiz Mamat ◽  
Mohamad Rusop
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Electrical Properties ◽  
Surface Morphology ◽  
Immersion Time ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Immersion Technique ◽  
Doped Zno

We investigated the effect of immersion time on optical, electrical properties and surface morphology of nanostructured Aluminium (Al) doped Zinc Oxide (ZnO) thin films prepared by immersion technique. UV-Vis-NIR spectra indicate that the transmittance of the samples decrease with immersion time. Electrical properties study reveals the nanostructured Al doped ZnO thin film at 1 hr shows the lowest resistivity compared to other samples. Surface morphology results as characterized by scanning electron microscope (SEM) show that the Al doped ZnO nanorods quantity increased with immersion time.

Structural Properties of Stannic Oxide Coated Aluminium-Doped Zinc Oxide Nanorods

2015 ◽  
Vol 1109 ◽  
pp. 476-480
Author(s):  
Ahmad Syakirin Ismail ◽  
Mohd Firdaus Malek ◽  
Muhammad Amir Ridhwan Abdullah ◽  
Mohamad Hafiz Mamat ◽  
M. Rusop
Keyword(s):  
Zinc Oxide ◽  
Structural Properties ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Oxide Coating ◽  
Zinc Oxide Nanorods ◽  
Stannic Oxide ◽  
Immersion Method ◽  
Force Microscopy ◽  
Atomic Force

Aluminium (Al) - doped zinc oxide (ZnO) nanorods was deposited using sol-gel immersion method. To study the effect of stannic oxide coating (SnO2) on the structural properties of the ZnO nanorods, SnO2with different layers were deposited on the top of ZnO nanorods, from 1 to 5 layers. The structural properties of the samples have been characterized using field emission scanning electron microscopy (FESEM), atomic force microscopy and x-ray diffraction (XRD). The analyses showed that by increasing the deposited layer, the surface roughness of the samples reduced and also reduced the porosity of the surface.

Enhanced Antibacterial Activity by Au Nanoparticle Decorated ZnO Nanorods

2016 ◽  
Vol 675-676 ◽  
pp. 113-116
Author(s):  
Kanya Sornsanit ◽  
Mati Horprathum ◽  
Pitak Eiamchai ◽  
Chanunthorn Chananonnawathorn ◽  
Sukon Kalasung ◽  
...  
Keyword(s):  
Antibacterial Effect ◽  
Zno Nanorods ◽  
Average Diameter ◽  
Zinc Oxide Nanorods ◽  
Au Nanoparticle ◽  
Dc Magnetron Sputtering ◽  
Au Nps ◽  
X Ray ◽  
Oxide Nanorods ◽  
Scanning Electron

Gold nanoparticles (Au NPs) decorated on zinc oxide nanorods (ZnO NRs) arrays by combining hydrothermal method toward ZnO nanorods template and subsequent decoration on Au NPs on the ZnO surfaces by DC magnetron sputtering. The hybrids Au NPs-ZnO NRs were characterized using field-emission scanning electron microscopy and energy-dispersive X-ray spectroscopy. The average diameter and length of ZnO NRs template were estimate at 80 and 430 nm, respectively. In addition, antibacterial tests confirmed that adding Au NPs enhances antibacterial effect.

scholarly journals Creating a virtual device for processing the results of sorption measurements in the study of zinc oxide nanorods

2020 ◽  
Vol 7 (4) ◽  
pp. 154-158
Author(s):  
E. V. Maraeva ◽  
N. V. Permiakov ◽  
Y. Y. Kedruk ◽  
L. V. Gritsenko ◽  
Kh. A. Abdullin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Zinc Oxide ◽  
Zinc Oxide Nanorods ◽  
Scanning Electron Microscopy Data ◽  
Virtual Device ◽  
Electron Microscopy Data ◽  
Oxide Nanorods ◽  
Microscopy Data ◽  
Scanning Electron

The work is devoted to the creation of a virtual device (computer program) for processing the results of sorption analysis of nanomaterials, including for estimating the size of nanoparticles based on the specific surface area. The obtained evaluation results were compared with the scanning electron microscopy data. Photocatalytically active zinc oxide samples were chosen as the object of the study.

scholarly journals A study of hydrothermally grown ZnO nanorod-based metal-semiconductor-metal UV detectors on glass substrates

2017 ◽  
Vol 7 ◽  
pp. 184798041770214 ◽  
Author(s):  
Shaivalini Singh ◽  
Yogesh Kumar ◽  
Hemant Kumar ◽  
Sumit Vyas ◽  
Chinnamuthan Periasamy ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Zinc Oxide ◽  
Contrast Ratio ◽  
Zinc Oxide Nanorods ◽  
Glass Substrates ◽  
Metal Semiconductor Metal ◽  
Oxide Nanorods ◽  
Vis Spectroscopy ◽  
Scanning Electron

This study reports hydrothermally grown zinc oxide nanorod-based metal-semiconductor-metal ultraviolet detectors with palladium metal as the electrodes. The zinc oxide nanorods were deposited on glass substrates in two steps, seed layer deposition and growth of nanorods. The structural and optical properties of nanorods were examined using scanning electron microscopy and ultraviolet–vis spectroscopy, respectively. The scanning electron microscopy image showed that the growth of nanorods was uniform, and the ultraviolet–vis results indicate that the bandgap of zinc oxide nanorods was 3.23 eV. For metal-semiconductor-metal devices, interdigited metal electrodes with equal interelectrode spacing and a width of 0.3 mm were deposited above the zinc oxide nanorod thin films with a shadow mask using a thermal evaporation system. The current–voltage characteristics of the metal-semiconductor-metal detector were investigated and it showed a contrast ratio of approximately 2.10 and responsivity of approximately 0.199 A/W at 1.8 V. These results are expected to be beneficial to fabricating cheap and practical ultraviolet detection applications.

Enhanced Performance of Al-Doped Zinc Oxide Nanorods at Different Concentration Using Sol-Gel Preparation Methods towards Humidity Sensing Application

2015 ◽  
Vol 1109 ◽  
pp. 519-523
Author(s):  
Ahmad Syakirin Ismail ◽  
Mohd Firdaus Malek ◽  
Muhammad Amir Ridhwan Abdullah ◽  
Mohamad Hafiz Mamat ◽  
M. Rusop
Keyword(s):  
Zinc Oxide ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Al Doping ◽  
Preparation Methods ◽  
Current Voltage ◽  
Oxide Nanorods ◽  
Sensing Application ◽  
Gel Preparation

Zinc oxide (ZnO) nanorods with different Aluminium (Al) – doping concentration (at%) has been deposited on glass substrate. The concentrations of Al were varied from 0 (undoped), 0.2, 0.8, and 3 at %. Field emission scanning electron microscopy (FESEM) was used to study the structural properties of the samples, UV-vis for absorbance and transmittance coefficient, and current voltage (I-V) measurement for electrical properties. From the results, it is observed that the diameter size of nanorods were reduced upon the increasing of Al-concentration. The I-V measurement showed that the 0.8 at% doping sample produced the highest conductivity.

Two-Photon Excited Ultraviolet Photoluminescence of Zinc Oxide Nanorods

2008 ◽  
Vol 8 (11) ◽  
pp. 5854-5857 ◽  
Author(s):  
Guangping Zhu ◽  
Chunxiang Xu ◽  
Jing Zhu ◽  
Changgui Lu ◽  
Yiping Cui ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Emission Band ◽  
Single Photon ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Excitation Wavelength ◽  
Photoluminescence Intensity ◽  
Vapor Phase Transport ◽  
Two Photon ◽  
Oxide Nanorods

High density zinc oxide nanorods with uniform size were synthesized on (100) silicon substrate by vapor-phase transport method. The scanning electron microscopy images reveal that the nanorods have an average diameter of about 400 nm. The X-ray diffraction pattern demonstrates the wurtzite crystalline structure of the ZnO nanorods growing along [0001] direction. The single-photon excited photoluminescence presents a strong ultraviolet emission band at 394 nm and a weak visible emission band at 600 nm. When the ZnO nanorods were respectively pumped by various wavelength lasers from 520 nm to 700 nm, two-photon excited ultraviolet photoluminescence was observed. The dependence of the two-photon excited photoluminescence intensity on the excitation wavelength and power was investigated in detail.

scholarly journals Structural and optical properties of SnO2–Al2O3 nanocomposite synthesized via sol-gel route

2015 ◽  
Vol 33 (4) ◽  
pp. 714-718 ◽  
Author(s):  
Neeraj K. Mishra ◽  
Chaitnaya Kumar ◽  
Amit Kumar ◽  
Manish Kumar ◽  
Pratibha Chaudhary ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Properties ◽  
Sol Gel ◽  
Physical Interaction ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
X Ray ◽  
Sensing Applications ◽  
Scanning Electron

AbstractA nanocomposite of 0.5SnO2–0.5Al2O3 has been synthesized using a sol-gel route. Structural and optical properties of the nanocomposite have been discussed in detail. Powder X-ray diffraction and scanning electron microscopy with energy-dispersive X-ray diffraction spectroscopy confirm the phase purity and the particle size of the 0.5SnO2–0.5Al2O3 nanocomposite (13 to 15 nm). The scanning electron microscopy also confirms the porosity in the sample, useful in sensing applications. The FT-IR analysis confirms the presence of physical interaction between SnO2 and Al2O3 due to the slight shifting and broadening of characteristic bands. The UV-Vis analysis confirms the semiconducting nature because of direct transition of electrons into the 0.5SnO2–0.5Al2O3 nanocomposites.

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