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Electrostatic Interaction of Multi-walled Carbon Nanotubes Composites with CdTe and CdSe Nanoparticles

Title
Electrostatic Interaction of Multi-walled Carbon Nanotubes Composites with CdTe and CdSe Nanoparticles
Authors
Rabbani, MM[Rabbani, Mohammad Mahbub]Kim, D[Kim, Dukeun]Kim, HC[Kim, Hyun-Chul]Ko, CH[Ko, Chang Hyun]Nam, DG[Nam, Dae-Geun]Yu, YM[Yu, Young Moon]Park, YD[Park, Yeong Do]Oh, W[Oh, Weontae]
DGIST Authors
Kim, HC[Kim, Hyun-Chul]
Issue Date
2011-04
Citation
Metals and Materials International, 17(2), 227-231
Type
Article
Article Type
Article
Keywords
Carbon and GraphiteCompositesElectrochemistryNano-Structured Materials
ISSN
1598-9623
Abstract
Composites were prepared by the electrostatic interaction between carboxylated multi-walled carbon nanotubes (c-MWNTs) and either cadmium telluride (CdTe) or cadmium selenide (CdSe) nanoparticles. Multi-walled carbon nanotubes (MWNTs) were oxidized by an aqueous acid mixture, and both the CdTe and CdSe nanoparticles were stabilized by 2-(dimethylamino) ethanethiol hydrochloride in water to develop negatively and positively charged outer surfaces, respectively. Optical properties were investigated by UV/Vis and photoluminescence (PL) analyses. CdX (X = Te, or Se) nanoparticles showed emissions at the same position regardless of the existence of c-MWNTs. This result suggests that the interaction between CdX and c-MWNTs does not affect the photoluminescence of CdX nanoparticles in their composites. The binding energies and redox potential positions of the CdX nanoparticles in their c-MWNT-CdX composites shifted from those of the pure nanoparticles. These changes indicate that the electron densities on the interfaces of CdX nanoparticles and c-MWNTs were redistributed after the formation of composites due to the strong electrostatic interaction between the components. © KIM and Springer.
URI
http://hdl.handle.net/20.500.11750/3454
DOI
10.1007/s12540-011-0407-6
Publisher
Korean Institute of Metals and Materials
Related Researcher
Files:
There are no files associated with this item.
Collection:
Magnetic-Controlled Materials Research Group1. Journal Articles


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