FACILE FABRICATION OF ONE-DIMENSIONAL MULTI-COMPONENT NANOSTRUCTURES USING POROUS ANODIZED ALUMINA MEMBRANE

COSMOS ◽  
2010 ◽  
Vol 06 (02) ◽  
pp. 221-234
Author(s):  
LOH PUI YEE ◽  
LIU CHENMIN ◽  
PUA WEICHENG ◽  
KAM FONG YU ◽  
CHIN WEE SHONG
Keyword(s):  
Good Control ◽  
Short Review ◽  
Core Shell ◽  
Alumina Membrane ◽  
One Dimensional ◽  
Metal Metal ◽  
Polymer Metal ◽  
Facile Fabrication ◽  
Multiwall Nanotubes ◽  
Shell Nanowires

In this short review, we report the facile fabrication of various interesting multi-component nanostructures including arrays of core-shell nanowires, multiwall nanotubes, segmented nanowires and multilayer stacked nanodisks, using anodized alumina membrane (AAM). We demonstrate that metallic (Cu, Ni and Au) and polymeric (PPV and PPy) one-dimensional (1D) arrays can be readily prepared by electrochemical deposition into the AAM. By optimizing the experimental design and conditions, we developed techniques to produce various multi-component nanostructures such as polymer/metal or metal/metal core-shell nanowires as well as nanotubes, with reasonably good control over both the length and the shell thickness of the nanostructures. Furthermore, we extend this method to make segmented nanowires as well as multilayer stacked nanodisks. Selective functionalization of the segmented nanowires resulted in end-on or side-on adhesion of nanowires during assembly. We illustrate the possibility of utilizing these 1D arrays to present patterns with luminescent and/or magnetic properties at this length scale.

Hydrogen generation enhanced by nano-forest structures

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 12953-12958 ◽  
Author(s):  
Keumyoung Seo ◽  
Taekyung Lim ◽  
Edmund M. Mills ◽  
Sangtae Kim ◽  
Sanghyun Ju
Keyword(s):  
Surface Area ◽  
Hierarchical Structure ◽  
Hydrogen Generation ◽  
Three Dimensional ◽  
Core Shell ◽  
Porous Disk ◽  
One Dimensional ◽  
Reaction Surface ◽  
Shell Nanowires

A hierarchical structure of one-dimensional CeO2/SnO2 core–shell nanowires on a three-dimensional porous disk (namely the “nanowire forest”) could maximize the reaction surface area and avoid coarsening during hydrogen generation.

scholarly journals ZnO-CuO core-shell heterojunction nanowires for optoelectronic applications

2019 ◽  
Vol 1 (1) ◽  
pp. 23-24
Keyword(s):  
Band Gap ◽  
Radiation Detection ◽  
Good Control ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Type Semiconductor ◽  
Oxidation In Air ◽  
Shell Nanowires

Nowadays, core-shell nanowires have attracted a great scientific interest due to their unique physical properties and advanced functionalities leading to applications in optoelectronic area [1]. Combining ZnO, an n type semiconductor with a band gap of 3.3 eV [2] and CuO, an p type semiconductor with a band gap of 1.2 eV [3], into core-shell radial heterojunction nanowires, a type II heterojunction alignment can be acquired, with a good control of the separation and recombination of the charge carriers at the interface between the two semiconductors. In this context, the ZnO-CuO core-shell heterojunction nanowire arrays were synthesized by thermal oxidation in air and radiofrequency magnetron sputtering (Figure 1). The ZnO-CuO core-shell nanowire arrays were investigated by the morphological, structural, optical, compositional and surface chemistry point of views. In order to assessed their optoelectronic properties, individual ZnO-CuO core-shell nanowires were contacted using photolithography, electron beam lithography and thin film deposition techniques. Exhibiting a rectifying behavior (Figure 2), typical for n-p diodes, these single ZnO-CuO core-shell nanowires can be used in UV photodetectors applications, such as radiation detection, air purification, advanced communications etc.

Facile fabrication of MnO/C core–shell nanowires as an advanced anode material for lithium-ion batteries

2015 ◽  
Vol 180 ◽  
pp. 990-997 ◽  
Author(s):  
Cunbao Zhang ◽  
Jian-Gan Wang ◽  
Dandan Jin ◽  
Keyu Xie ◽  
Bingqing Wei
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Core Shell ◽  
Facile Fabrication ◽  
Shell Nanowires

Rapid fabrication of silver–cuprous oxide core–shell nanowires for visible light photocatalysts

CrystEngComm ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 24-29
Author(s):  
Siyi Yan ◽  
Qiaohui Yue ◽  
Jiangang Ma
Keyword(s):  
Visible Light ◽  
Cuprous Oxide ◽  
Core Shell ◽  
Rapid Fabrication ◽  
Facile Fabrication ◽  
Novel Method ◽  
Shell Nanowires

This work reports a novel method that enables facile fabrication of Ag–Cu2O core–shell nanowires (Ag@Cu2O NWs) for visible light photocatalysts.

New facile synthesis of one-dimensional Ag@TiO2 anatase core–shell nanowires for enhanced photocatalytic properties

RSC Advances ◽  
2014 ◽  
Vol 4 (103) ◽  
pp. 59114-59117 ◽  
Author(s):  
Qingsong Dong ◽  
Hongchao Yu ◽  
Zhengbo Jiao ◽  
Gongxuan Lu ◽  
Yingpu Bi
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Organic Contaminants ◽  
High Photocatalytic Activity ◽  
Core Shell ◽  
Facile Synthesis ◽  
One Dimensional ◽  
Tio2 Anatase ◽  
Shell Nanowires

One-dimensional Ag@TiO2 anatase core–shell nanowires are fabricated and exhibit high photocatalytic activity for degrading organic contaminants under visible-light irradiation.

Room-temperature magnetoresistance of one-dimensional magnetite (Fe3O4) nanostructures

2004 ◽  
Vol 853 ◽  
Author(s):  
Zuqin Liu ◽  
Daihua Zhang ◽  
Chongwu Zhou
Keyword(s):  
Magnetic Field ◽  
Wall Thickness ◽  
Room Temperature ◽  
Core Shell ◽  
Single Crystalline ◽  
One Dimensional ◽  
Magnetite Fe3o4 ◽  
Prepared Material ◽  
Different Temperatures ◽  
Shell Nanowires

ABSTRACTIn this paper, we present our recent studies on the synthesis and magnetoresistance of single crystalline Fe3O4 core-shell nanowires and nanotubes. Homogeneous Fe3O4 nanowires/tubes with controllable length, diameter and wall thickness were synthesized. The as-prepared material composition and stoichoimetry have been carefully examined and confirmed with a variety of characterization techniques including XRD, EDS, XPS, and TEM. Magnetoresistance under different temperatures was systemically studied. Up to 1.2% room temperature magnetoresistance was observed in the as synthesized nanowires/tubes under a magnetic field of B = 1.8 T.

Template-free electrochemical synthesis of Cd/CdTe core/shell nanowires and CdTe nanotubes

CrystEngComm ◽  
2020 ◽  
Vol 22 (25) ◽  
pp. 4301-4305
Author(s):  
Guangwei She ◽  
Tong Cai ◽  
Lixuan Mu ◽  
Wensheng Shi
Keyword(s):  
Crystal Structure ◽  
Electrochemical Synthesis ◽  
Kirkendall Effect ◽  
Core Shell ◽  
Anisotropic Crystal ◽  
One Dimensional ◽  
Template Free ◽  
First Time ◽  
Shell Nanowires ◽  
Cdte Core

Template-free electrodeposition was utilized to prepare Cd/CdTe nanowires and CdTe nanotubes for the first time, where the formation of one-dimensional structures was due to the highly anisotropic crystal structure and the Kirkendall effect.

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