Synthesis and Growth Mechanisms of One-Dimensional Strontium Hydroxyapatite Nanostructures

2005 ◽  
Vol 44 (26) ◽  
pp. 9895-9901 ◽  
Author(s):  
Tae-Gon Kim ◽  
Byungwoo Park
Keyword(s):  
Growth Mechanisms ◽  
One Dimensional ◽  
Strontium Hydroxyapatite

SHAPE EVOLUTION IN ONE-DIMENSIONAL ZnO NANOSTRUCTURES GROWN FROM ZnO NANOPOWDER SOURCE: VAPOR–LIQUID–SOLID VERSUS VAPOR–SOLID GROWTH MECHANISMS

2011 ◽  
Vol 10 (01n02) ◽  
pp. 75-79 ◽  
Author(s):  
SOUMEN DHARA ◽  
P. K. GIRI
Keyword(s):  
Growth Mechanism ◽  
Growth Temperature ◽  
Shape Evolution ◽  
Zno Nanostructures ◽  
Growth Mechanisms ◽  
Vapor Liquid Solid ◽  
One Dimensional ◽  
Zno Nanopowder ◽  
Simultaneous Growth ◽  
Vapor Liquid

Here we report on the growth and evolution of ZnO nanowires grown from ZnO nanopowder as a source material using a horizontal muffle furnace. The shape evolution has been studied with variation in growth temperature and zinc vapor pressure. The structural analysis on these nanostructures shows c-axis oriented aligned growth. Scanning electron microscopy imaging of these nanostructures revealed the shape evolution from nanowires to nanoribbons and then to nanorods as the growth temperature increases from 650°C to 870°C. At 650°C, only vertical nanowires have been observed and with increase in growth temperature nanowires transform to nanoribbons and then to nanorods at 870°C. And we also observed simultaneous growth of nanorods and nanoribbons under a specific growth condition. We believe that these nanowires and nanorods were formed by vapor–liquid–solid growth mechanism (catalyst-mediated growth), whereas nanoribbons were grown by vapor–solid growth mechanism (without the aid of a metal catalyst). We observed simultaneous occurrence of vapor–liquid–solid and vapor–solid growth mechanisms at a particular growth temperature. These ZnO nanowires exhibit bound exciton related UV emission at ~379 nm, and defect-emission band in the visible region. Possible growth mechanism, shape evolution, and simultaneous growth of two types of one-dimensional ZnO nanostructures under the same growth condition are discussed.

Solvothermal Synthesis and Optical Performance of One-dimensional Strontium Hydroxyapatite Nanorod

2012 ◽  
Vol 20 (1) ◽  
pp. 89-94 ◽  
Author(s):  
Zhanglei NING ◽  
Zhidong CHANG ◽  
Wenjun LI ◽  
Changyan SUN ◽  
Jinghua ZHANG ◽  
...  
Keyword(s):  
Solvothermal Synthesis ◽  
Optical Performance ◽  
One Dimensional ◽  
Strontium Hydroxyapatite

scholarly journals Synthesis and Application of One-Dimensional La(OH)3Nanostructures: An Overview

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Xiang Xiao ◽  
Yu Huang ◽  
Fan Dong
Keyword(s):  
Physical Properties ◽  
Electronic Structures ◽  
Growth Mechanisms ◽  
One Dimensional ◽  
New Directions ◽  
Potential Applications ◽  
Transition Modes ◽  
Semiconductor Nanomaterials ◽  
Comprehensive Introduction ◽  
Solvothermal Methods

One-dimensional (1D) semiconductor nanomaterials are of particular importance owing to their unique properties and potential applications. This review attempts to provide a comprehensive introduction of 1D La(OH)3nanostructures including nanowires, nanoneedles, nanobelts, and nanorods. Firstly, various strategies developed to fabricate the 1D La(OH)3nanostructures are discussed, such as precipitation and composite-hydroxide-mediated, hydrothermal, and solvothermal methods, accompanying the description of the corresponding growth mechanisms. Then, the unique properties such as novel physical properties of 1D La(OH)3nanostructures resulting from their unique electronic structures and numerous transition modes involving the 4f shells of these ions are represented in detail. Also, the wide applications in photocatalyst, capacitors, and photoluminescence based on the unique properties are discussed. Finally, the paper ends with a summary and some perspectives on the challenges and new directions in this emerging area.

Synthesis and Properties of SnO2 One-Dimensional Nanomaterials on Pt-Coated Substrates

2006 ◽  
Vol 517 ◽  
pp. 21-24
Author(s):  
Hyoun Woo Kim ◽  
S.H. Shim
Keyword(s):  
Electron Microscopy ◽  
Thermal Evaporation ◽  
Light Emission ◽  
Growth Mechanisms ◽  
X Ray Diffraction ◽  
Rutile Structure ◽  
One Dimensional ◽  
X Ray ◽  
Transmission Electron ◽  
Tetragonal Rutile Structure

We have synthesized the belt-like structures of tin oxide (SnO2) by carrying out the thermal evaporation of solid Sn powders. We have analyzed the samples with scanning electron microscopy, X-ray diffraction, transmission electron microscopy and photoluminescence (PL). The obtained nanobelts were single crystalline with a tetragonal rutile structure. PL spectrum exhibited the visible light emission. We have discussed the possible growth mechanisms.

Growth mechanisms of one-dimensional zinc oxide hierarchical structures

2006 ◽  
Vol 17 (22) ◽  
pp. 5556-5560 ◽  
Author(s):  
Y H Yang ◽  
B Wang ◽  
G W Yang
Keyword(s):  
Zinc Oxide ◽  
Hierarchical Structures ◽  
Growth Mechanisms ◽  
One Dimensional

scholarly journals The Synthesis, Structure, Morphology Characterizations and Evolution Mechanisms of Nanosized Titanium Carbides and Their Further Applications

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1152 ◽  
Author(s):  
Dong ◽  
Qiu ◽  
Li ◽  
Shu ◽  
Yang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Synthesis Methods ◽  
Growth Mechanisms ◽  
Ceramic Phase ◽  
One Dimensional ◽  
Comprehensive Properties ◽  
Structure Morphology ◽  
Titanium Carbides ◽  
And Control ◽  
Development Prospects

It is widely known that the special performances and extensive applications of the nanoscale materials are determined by their as-synthesized structures, especially their growth sizes and morphologies. Hereinto, titanium carbides, which show brilliant comprehensive properties, have attracted considerable attention from researchers. How to give full play to their potentials in the light-weight manufacture, microwave absorption, electromagnetic protection, energy conversion and catalyst areas has been widely studied. In this summarized article, the synthesis methods and mechanisms, corresponding growth morphologies of titanium carbides and their further applications were briefly reviewed and analyzed according to their different morphological dimensions, including one-dimensional nanostructures, two-dimensional nanosheets and three-dimensional nanoparticles. It is believed that through the investigation of the crystal structures, synthesis methods, growth mechanisms, and morphology characterizations of those titanium carbides, new lights could be shed on the regulation and control of the ceramic phase specific morphologies to meet with their excellent properties and applications. In addition, the corresponding development prospects and challenges of titanium carbides with various growth morphologies were also summarized.

Microstructures, Growth Mechanism of ZnS Nanomatrials Farbicated by Physical Vapor Deposition

2011 ◽  
Vol 356-360 ◽  
pp. 533-536
Author(s):  
Jiang Feng Gong ◽  
Chang Yong Lan ◽  
Bo Zhang ◽  
Wei Hua Zhu ◽  
Ming Yi Liu
Keyword(s):  
Vapor Deposition ◽  
Deposition Temperature ◽  
Physical Vapor Deposition ◽  
Deposition Method ◽  
Growth Mechanisms ◽  
Key Factors ◽  
Vapor Liquid Solid ◽  
One Dimensional ◽  
Physical Vapor Deposition Method ◽  
Temperature Area

In this paper, one-dimensional ZnS nanostructures were fabricated in a conventional tube furnace by physical vapor deposition method using commercial ZnS powder as the starting materials. The morphologies, microstructures of the products were characterized. The results revealed that the products showed different morphology in different deposition temperature area. The growth mechanisms of the products were also discussed. The nanowires and triangular nanosheets formed via a vapor-liquid-solid process, while the nanobelts formed via a vapor-solid process. The key factors which influenced the morphologies of the products were discussed.

ONE-DIMENSIONAL OXIDE NANOSTRUCTURES PRODUCED BY GAS PHASE REACTION

2009 ◽  
Vol 02 (03) ◽  
pp. 87-94 ◽  
Author(s):  
BEN DINAN ◽  
SHEIKH A. AKBAR
Keyword(s):  
Gas Phase ◽  
Low Cost ◽  
Phase Reaction ◽  
Growth Mechanisms ◽  
Gas Phase Reactions ◽  
One Dimensional ◽  
1D Nanostructures ◽  
Gas Phase Reaction ◽  
Advantages And Disadvantages ◽  
Oxide Nanostructures

One-dimensional (1D) nanostructures are of great interest due to the promise of enhanced properties and improved device performance such as increased efficiency in solar cells by improved charge separation. There are many means of producing 1D nanostructures including chemical synthesis, lithography, template assisted growth and gas phase reaction. While all of these have their advantages and disadvantages, growth by gas phase reaction has the benefit of low cost and scalability to be used in mass production. This work outlines several of the more common growth mechanisms which utilize gas phase reactions to produce 1D nanostructures. The similarities and differences between the different mechanisms are discussed with an emphasis on the confinement of growth to 1D.

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