The Effect of Deposition Temperature on the Growth of ZnO Nanorods on Porous Silicon using Sol-gel Immersion Method

The optical and structural properties of Zinc Oxide (ZnO) nanostructures is prepared by sol-gel immersion method at different temperature on Porous Silicon (PSi) Substrates. PSi is produced from the Si by using electrochemical etching process. The ZnO solution is prepared by using the sol-gel immersion method. Parameters such as different deposition time were studied. The optical properties of ZnO Nanostructures will be characterized by using PL and SEM. The structural properties of ZnO Nanostructures will be characterized by using XRD. The result of investigation show that the growth of ZnO nanostructures improving as the deposition temperature increase.

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.667.375 ◽

2013 ◽

Vol 667 ◽

pp. 375-379 ◽

Cited By ~ 9

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.

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1109.476 ◽

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.

Download Full-text

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

SPEKTRA Jurnal Kajian Pendidikan Sains ◽

10.32699/spektra.v5i2.107 ◽

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.

Download Full-text

Synthesis of ZnO nanorods on porous silicon substrate using sol–gel method

Materials Research Innovations ◽

10.1179/143307509x437581 ◽

2009 ◽

Vol 13 (3) ◽

pp. 189-191 ◽

Cited By ~ 3

Author(s):

S. Amizam ◽

M. H. Mamat ◽

Z. Khusaimi ◽

H. A. Rafaie ◽

M. Z. Sahdan ◽

...

Keyword(s):

Porous Silicon ◽

Silicon Substrate ◽

Sol Gel ◽

Zno Nanorods ◽

Gel Method ◽

Sol Gel Method ◽

Porous Silicon Substrate

Download Full-text

The Effect of Deposition Time on the Structural Properties of ZnO Nanorods Prepared by Sol-Gel Immersion Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.667.407 ◽

2013 ◽

Vol 667 ◽

pp. 407-410

Author(s):

N.A. Amir ◽

Zuraida Khusaimi ◽

Saifollah Abdullah ◽

Mohamad Rusop

Keyword(s):

Growth Rate ◽

Structural Properties ◽

Deposition Time ◽

Sol Gel ◽

Zno Nanorods ◽

Growth Time ◽

Si Substrate ◽

Immersion Method ◽

Bare Substrate ◽

Scanning Electron

ZnO nanorods were successfully grown on Au coated Si substrate and Si bare substrate. The growth was using sol-gel immersion method at different deposition time which is 2, 4, 6, 8, 10 and 12 hours. In the presence of Au, growth rate of nanorods is much faster as it performs as a catalyst by decreasing the growth time of ZnO nanorods to half compared to growth on Si substrate without Au coated. Using Scanning Electron Microscope (SEM), changes in growth of nanorods at different deposition time was captured and the structural properties are discussed.

Download Full-text

An approach for preparation of porous silicon/rare earth hybrid — Immersion method

Journal of Wuhan University of Technology-Mater Sci Ed ◽

10.1007/s11595-009-6970-8 ◽

2009 ◽

Vol 24 (6) ◽

pp. 970-972

Author(s):

Xiaoxia Zhang ◽

Ning Chen ◽

Jianxin Shi ◽

Menglian Gong ◽

Jianhua Zhang ◽

...

Keyword(s):

Rare Earth ◽

Porous Silicon ◽

Immersion Method

Download Full-text

Fabrication of an Electrochemical Sensor for Glucose Detection using ZnO Nanorods

MRS Advances ◽

10.1557/adv.2016.149 ◽

2016 ◽

Vol 1 (13) ◽

pp. 861-867 ◽

Cited By ~ 2

Author(s):

Sanghamitra Mandal ◽

Mohammed Marie ◽

Omar Manasreh

Keyword(s):

Response Time ◽

Glass Substrate ◽

Glucose Sensor ◽

Limit Of Detection ◽

Sol Gel ◽

Zno Nanorods ◽

Phosphate Buffer Solution ◽

Buffer Solution ◽

Coated Glass Substrate ◽

Coated Glass

ABSTRACTAn electrochemical glucose sensor based on zinc oxide (ZnO) nanorods is fabricated, characterized and tested. The ZnO nanorods are synthesized on indium titanium oxide (ITO) coated glass substrate, using the hydrothermal sol-gel technique. The working principle of the sensor under investigation is based on the electrochemical reaction taking place between cathode and anode, in the presence of an electrolyte. A platinum plate, used as the cathode and Nafion/Glucose Oxidase/ZnO nanorods/ITO-coated glass substrate used as anode, is immersed in pH 7.0 phosphate buffer solution electrolyte to test for the presence of glucose. Several amperometric tests are performed on the fabricated sensor to determine the response time, sensitivity and limit of detection of the sensor. A fast response time less than 3 s with a high sensitivity of 1.151 mA cm-2mM-1 and low limit of detection of 0.089 mM is reported. The glucose sensor is characterized using the cyclic voltammetry method in the range from -0.8 – 0.8 V with a voltage scan rate of 100 mV/s.

Download Full-text

Material Properties of Strontium Doped Bioactive Glasses/Hydroxyapatite Composite and Its Mechanism of Promoting Bone Repair

Journal of Biomaterials and Tissue Engineering ◽

10.1166/jbt.2021.2853 ◽

2021 ◽

Vol 11 (12) ◽

pp. 2313-2320

Author(s):

Jian Zhao ◽

Wei Li ◽

Xin Dong ◽

Jiying Chen

Keyword(s):

Bone Repair ◽

Sol Gel ◽

Precipitation Method ◽

Dissolution Behavior ◽

Immersion Method ◽

Bioactive Glasses ◽

Strontium Content ◽

M2 Polarization ◽

Good Ability

Based on bioactive glasses (BG) of 58S, sol–gel method is used to prepare strontium oxide substituted bioactive glasses (SrO-BG) with different strontium content. SrO-BG and nano hydroxyapatite (HAp) composite materials were synthesized using precipitation method. The phase composition and morphologies of the prepared materials were examined by x-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The dissolution and bio-mineralization of SrO-BG and SrO-BG/HAp composites in SBF are investigated by immersion method. The effects of secretion components of macrophages regulated by strontium doped SrO-BG/HAp composites on the osteogenic differentiation (OD) of bone marrow mesenchymal stem cells (BMSCs) are analyzed. The results demonstrate that the SrO-BG can inhibit the dissolution of BG. Different proportions of SrO-BG/HAp composites show good ability to induce HAp in SBF. The bio-mineralization ability of SrO-BG/HAp composites increases with the increase of SrO-BG content. The results of dissolution behavior and bio-mineralization of SrO-BG/HAp composite show that the dissolution rate of each ion can be controlled by adjusting the content of SrO-BG in the composite, and then the degradation rate can effectively be controlled. The results of in vitro experiments show that SrO-BG/HAp composites with 2%, 5% and 8% strontium content are more effective in promoting M2 polarization of macrophages than SrO-BG/HAp composites with 0% strontium content. Among them, 5% strontium doped SrO-BG/HAp has the strongest effect on M2 polarization of macrophages, and the secretion of macrophages regulated by 5% strontium doped SrO-BG/HAp composite is more conducive to bone repair.

Download Full-text