Annealing Effect on the Surface Morphology and Photoluminescence Properties of ZnO Nanorod Prepared by Catalytic-Immersion Method Grown on Si and Au/Si Substrate

2013 ◽  
Vol 667 ◽  
pp. 110-114
Author(s):  
Azlinda Ab Aziz ◽  
Zuraida Khusaimi ◽  
Saifollah Abdullah ◽  
Mohamad Rusop Mahmood
Keyword(s):  
Surface Morphology ◽  
Annealing Temperature ◽  
High Surface ◽  
Zno Nanorods ◽  
High Surface Area ◽  
Si Substrate ◽  
Immersion Method ◽  
Oxide Nanostructures ◽  
Hexagonal Shape ◽  
Metal Oxide Nanostructures

ZnO nanorods were prepared by immersion method deposited onto Silicon (Si) and gold-seeded Si (Au/Si) substrate. The annealing temperatures were varied from 400, 500 and 600 °C. The effect of annealing temperature on the surface morphology and photoluminescence characteristics was investigated. The samples were characterized by Field Emission Scanning Electron Microscope (FESEM) to study their morphology and structural properties while the optical properties were characterized at room temperature using Photoluminescence Spectroscope. The shape of ZnO showed growth of nanorods with hexagonal shape. As the annealing temperature increased, the morphology study indicates that particle size of ZnO decreased while the crystallinity increases. The structures has high surface area, is a potential metal oxide nanostructures to be develop for optoelectronic devices and chemical sensors.

Annealing Effect on the Surface Morphology and Photoluminescence Properties of ZnO Hexagonal Rods by Immersion Method

2012 ◽  
Vol 576 ◽  
pp. 353-356 ◽  
Author(s):  
Ab Aziz Azlinda ◽  
Zuraida Khusaimi ◽  
Fadzilah Suhaimi Husairi ◽  
Nor Iyazi Nasruddin ◽  
S. Abdullah ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Room Temperature ◽  
Annealing Temperature ◽  
High Surface ◽  
High Surface Area ◽  
Photoluminescence Properties ◽  
Immersion Method ◽  
Oxide Nanostructures ◽  
Hexagonal Shape ◽  
Metal Oxide Nanostructures

ZnO hexagonal rod structure were prepared by immersion method deposited onto Si (Si/ZnO) and gold-seeded Si substrate (ZnO/Au/Si). The annealing temperatures were varied from 400, 500 and 600 °C. The effect of annealing temperature on the surface morphology and photoluminescence characteristics was investigated. The samples were characterized by Field Emission Scanning Electron Microscope (FESEM) to study their morphology and structural properties while the optical properties were characterized at room temperature using Photoluminescence Spectroscopy. The shape of ZnO showed growth of rods with hexagonal shape. As the annealing temperature increased, the morphology study indicates that diameter size of ZnO decreased while the crystallinity increases. The structures has high surface area, is a potential metal oxide nanostructures to be develop for optoelectronic devices and chemical sensors.

Influence of Substrate’s Alignment Strategy to the Growth of ZnO Nano-Petals via Solution-Immersion Method

2012 ◽  
Vol 620 ◽  
pp. 60-65
Author(s):  
Azlinda Ab Aziz ◽  
Zuraida Khusaimi ◽  
Mohamad Rusop
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Zinc Nitrate ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Immersion Method ◽  
Oxide Nanostructures ◽  
Metal Oxide Nanostructures ◽  
Alignment Strategy

Zinc oxide (ZnO) nanostructures were successfully grown on gold-seeded Si substrate prepared by a solution-immersion method using a novel mixture of an aqueous solution of Zinc nitrate hexahydrate (Zn (NO3)2.6H2O) with a non-toxic, odourless urea (CH4N2O) as a stabilizer. Structural and optical properties of resultant ZnO thin films were investigated by X-Ray Diffraction, FESEM and Photoluminescence Spectroscopy (PL). Clusters of ZnO micro-flower with serrated broad petals with the thickness of petals approximately 60 nm were interestingly formed on the film with horizontal manner of alignment during immersion process. The smallest grain size (29 nm) along (100) orientation was achieve with the alignment of substrate tilt towards 60°. The petals structure has high surface area, is a potential metal oxide nanostructures to be develop for optoelectronic devices and chemical sensors.

Characterization of Urea versus HMTA in the Preparation of Zinc Oxide Nanostructures by Solution-Immersion Method Grown on Gold-Seeded Silicon Substrate

2011 ◽  
Vol 364 ◽  
pp. 45-49 ◽  
Author(s):  
Azlinda Ab Azlinda ◽  
Zuraida Khusaimi ◽  
Saifollah Abdullah ◽  
Mohamad Rusop
Keyword(s):  
Zinc Oxide ◽  
Silicon Substrate ◽  
High Surface ◽  
High Surface Area ◽  
Zinc Nitrate ◽  
Nitrate Hexahydrate ◽  
Zno Nanostructures ◽  
Zinc Oxide Nanostructures ◽  
Immersion Method ◽  
Oxide Nanostructures

Zinc oxide (ZnO) nanostructures prepared by immersion method were successfully grown on gold-seeded silicon substrate using Zinc nitrate hexahydrate (Zn (NO3)2.6H2O) as a precursor, separately stabilized with non-toxic urea (CH4N2O) and hexamethylene tetraamine (HMTA). The effect of changing the stabilizer of ZnO solution on the crystal structure, morphology and photoluminescence properties of the resultant ZnO is investigated. X-ray diffraction of the synthesized ZnO shows hexagonal zincite structure. The morphology of the ZnO was characterized using Field Emission Scanning Electron Microscope (FESEM). The growth of ZnO using urea as stabilizer shows clusters of ZnO nanoflower with serrated broad petals were interestingly formed. ZnO in HMTA showed growth of nanorods. The structures has high surface area, is a potential metal oxide nanostructures to be develop for optoelectronic devices and chemical sensors. The formation of ZnO nanostructures is found to be significantly affected by the stabilizer.

Effect of Annealing Temperature of Magnesium Doped Zinc Oxide Nanorods Growth on Silicon Substrate

2013 ◽  
Vol 26 ◽  
pp. 33-38 ◽  
Author(s):  
Ruziana Mohamed ◽  
Zuraida Khusaimi ◽  
A.N. Afaah ◽  
Aadila Aziz ◽  
Mohamad Hafiz Mamat ◽  
...  
Keyword(s):  
Silicon Substrate ◽  
Annealing Temperature ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Immersion Method ◽  
Xrd Diffraction ◽  
Zinc Oxides ◽  
Good Crystallinity ◽  
Oxide Nanorods ◽  
Mg Doped

Magnesium (Mg)-doped zinc oxides (ZnO) have been prepared on a silicon substrate by using the solution-immersion method. The nanorods films were annealed at different temperature 0°C, 250°C, 500°C respectively for 1 hour. The XRD diffraction indicated that the Mg-doped ZnO nanorods have good crystallinity with a hexagonal wurzite structure preferentially oriented along the (002) direction. PL spectroscopy at room temperature shows strong UV peaks appearing at 383 nm when annealed at 250°C. The intensity of broad emission peaks increases with increasing annealing temperature to 500°C which is possibility attributed to intrinsic defects.

scholarly journals High performance Ce-doped ZnO nanorods for sunlight-driven photocatalysis

2016 ◽  
Vol 7 ◽  
pp. 1338-1349 ◽  
Author(s):  
Bilel Chouchene ◽  
Tahar Ben Chaabane ◽  
Lavinia Balan ◽  
Emilien Girot ◽  
Kevin Mozet ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Average Length ◽  
High Surface ◽  
Zno Nanorods ◽  
High Surface Area ◽  
Visible Region ◽  
Solar Light ◽  
Effective Electron ◽  
Doped Zno ◽  
Zno Rods

Ce-doped ZnO (ZnO:Ce) nanorods have been prepared through a solvothermal method and the effects of Ce-doping on the structural, optical and electronic properties of ZnO rods were studied. ZnO:Ce rods were characterized by XRD, SEM, TEM, XPS, BET, DRS and Raman spectroscopy. 5% Ce-doped ZnO rods with an average length of 130 nm and a diameter of 23 nm exhibit the highest photocatalytic activity for the degradation of the Orange II dye under solar light irradiation. The high photocatalytic activity is ascribed to the substantially enhanced light absorption in the visible region, to the high surface area of ZnO:Ce rods and to the effective electron–hole pair separation originating from Ce doping. The influence of various experimental parameters like the pH, the presence of salts and of organic compounds was investigated and no marked detrimental effect on the photocatalytic activity was observed. Finally, recyclability experiments demonstrate that ZnO:Ce rods are a stable solar-light photocatalyst.

scholarly journals Preparation of ZnO Nanorods/Graphene Composite Anodes for High-Performance Lithium-Ion Batteries

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 966 ◽  
Author(s):  
Junfan Zhang ◽  
Taizhe Tan ◽  
Yan Zhao ◽  
Ning Liu
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Hydrothermal Reaction ◽  
High Surface ◽  
Zno Nanorods ◽  
High Surface Area ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Practical Application ◽  
Composite Anodes

ZnO is a promising anode material for lithium-ion batteries (LIBs); however, its practical application is hindered primarily by its large volume variation upon lithiation. To overcome this drawback, we synthesized ZnO/graphene composites using the combination of a simple hydrothermal reaction and spray drying. These composites consisted of well-dispersed ZnO nanorods anchored to graphene. The folded three-dimensional graphene spheres provided a high conductivity, high surface area, and abundant defects. LIB with an anode composed of our novel ZnO/graphene material demonstrated a high initial discharge capacity of 1583 mAh g−1 at 200 mA g−1.

Highly Uniform Self-Assembled Gold Nanoparticles over High Surface Area ZnO Nanorods as Catalysts

2014 ◽  
Vol 3 (10) ◽  
pp. M61-M64 ◽  
Author(s):  
Tarek M. Abdel-Fattah ◽  
Alex Wixtrom ◽  
Kai Zhang ◽  
Wei Cao ◽  
Helmut Baumgart
Keyword(s):  
Gold Nanoparticles ◽  
Surface Area ◽  
High Surface ◽  
Zno Nanorods ◽  
High Surface Area ◽  
Self Assembled ◽  
Highly Uniform

scholarly journals Galactose biosensor based on ZnO nano material

2017 ◽  
Vol 1 (T4) ◽  
pp. 123-129
Author(s):  
Ha Phan Phuong La ◽  
Hien Thi Thu Nguyen ◽  
Trung Quang Tran
Keyword(s):  
Optical Waveguides ◽  
High Surface ◽  
Zno Nanorods ◽  
High Surface Area ◽  
Galactose Oxidase ◽  
Detection Range ◽  
One Dimensional ◽  
Linear Detection ◽  
Potential Applications ◽  
Type Semiconductor

ZnO nanomaterial is a n-type semiconductor material and exits in a variety of one-dimensional nanostructures such as: nanorods, nanotubes, nanowalls, nanowires, ect… [3]. They have potential applications in making devices such as: light emiting diodes, optical waveguides, nanolaser, gas sensor, biosensor. Due to the high surface area to volume ratios, nontoxicity, chemical stability, biocompatibility, the high isoelectric point (IEP: 9.5), ect…; ZnO nanorods were largely used for biosensor. In this work, we developed enzyme electrode biosensor based on ZnO nanorods to test galactose solution by immobilizing galactose oxidase on ZnO nanorods grown on FTO substrate. The result showed that the proposed biosensor had the linear detection range from 40 to 230 mM galactose solution.

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