Preparation and characterization of short length ZnO nanorods and ZnO@ZnS core–shell nanostructures

2012 ◽  
Vol 3 (4) ◽  
pp. 197-202 ◽  
Author(s):  
Geeta Rani ◽  
P.D. Sahare
Keyword(s):  
Zno Nanorods ◽  
Short Length ◽  
Core Shell ◽  
Shell Nanostructures

Fabrication, physiochemical and optoelectronic characterization of SiO2/CdS core–shell nanostructures

2014 ◽  
Vol 25 (3) ◽  
pp. 1202-1208 ◽  
Author(s):  
Chidambaram Siva ◽  
Raju Ramya ◽  
Pari Baraneedharan ◽  
Kasi Nehru ◽  
Muthusamy Sivakumar
Keyword(s):  
Core Shell ◽  
Shell Nanostructures

Synthesis and Surface Modification of ZnO Nanorods Arrays

2015 ◽  
Vol 1119 ◽  
pp. 49-53
Author(s):  
Muhammad Aftab Akram ◽  
Sofia Javed ◽  
Mohammad Mujahid
Keyword(s):  
Raman Spectroscopy ◽  
Surface Modification ◽  
Electron Microscope ◽  
Morphological Analysis ◽  
Zno Nanorods ◽  
Core Shell ◽  
Exchange Method ◽  
Shell Nanostructures ◽  
Vertically Aligned ◽  
Scanning Electron

Synthesis of 0ne dimensional (1-D) vertically aligned nanostructures of ZnO are reported to act as scaffold for conversion to or coating of other semiconducting compositions. Surface of ZnO is converted to ZnSe by anion exchange and results in formation of ZnO/ZnSe core/shell nanorods. ZnSe is further converted to CuSe by cation exchange method to fabricate ZnO/CuSe core/shell nanorods. ZnO nanorods or core/shell compositions are decorated with absorber nanoparticles of CZTSe & CIGSe for the fabrications of photoanodes of nanowire solar cells. 1-D or core/shell Nanostructures are characterized by scanning electron microscope for morphological analysis and structural confirmations are made by XRD and Raman spectroscopy.

scholarly journals Synthesis and characterization of noble metal–titania core–shell nanostructures with tunable shell thickness

2017 ◽  
Vol 8 ◽  
pp. 2083-2093 ◽  
Author(s):  
Bartosz Bartosewicz ◽  
Marta Michalska-Domańska ◽  
Malwina Liszewska ◽  
Dariusz Zasada ◽  
Bartłomiej J Jankiewicz
Keyword(s):  
Noble Metal ◽  
Shell Thickness ◽  
Noble Metal Nanoparticles ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Vis Spectroscopy ◽  
Metal Metal ◽  
Coating Method ◽  
Titania Coating

Core–shell nanostructures have found applications in many fields, including surface enhanced spectroscopy, catalysis and solar cells. Titania-coated noble metal nanoparticles, which combine the surface plasmon resonance properties of the core and the photoactivity of the shell, have great potential for these applications. However, the controllable synthesis of such nanostructures remains a challenge due to the high reactivity of titania precursors. Hence, a simple titania coating method that would allow better control over the shell formation is desired. A sol–gel based titania coating method, which allows control over the shell thickness, was developed and applied to the synthesis of Ag@TiO2 and Au@TiO2 with various shell thicknesses. The morphology of the synthesized structures was investigated using scanning electron microscopy (SEM). Their sizes and shell thicknesses were determined using tunable resistive pulse sensing (TRPS) technique. The optical properties of the synthesized structures were characterized using UV–vis spectroscopy. Ag@TiO2 and Au@TiO2 structures with shell thickness in the range of ≈40–70 nm and 90 nm, for the Ag and Au nanostructures respectively, were prepared using a method we developed and adapted, consisting of a change in the titania precursor concentration. The synthesized nanostructures exhibited significant absorption in the UV–vis range. The TRPS technique was shown to be a very useful tool for the characterization of metal–metal oxide core–shell nanostructures.

Synthesis and characterization of carbon-coated iron core/shell nanostructures

2008 ◽  
Vol 448 (1-2) ◽  
pp. 272-276 ◽  
Author(s):  
Hongming Cao ◽  
Guangjian Huang ◽  
Shaofeng Xuan ◽  
Qiufang Wu ◽  
Feng Gu ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Iron Core ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Carbon Coated
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