title: Characterization of attractive interaction-driven carbon nanotube composites with Cd-based nanoparticles.
abstract: Multiwalled carbon nanotube (MWNT) composites with cadmium telluride (CdTe) or cadmium selenide (CdSe) nanoparticles were prepared via electrostatic interaction. The MWNTs were modified with carboxylic acid groups. Both the CdTe and CdSe nanoparticles were stabilized with 2-(dimethylamino) ethanethiol hydrochloride to develop positive charges on their surfaces in water. They were characterized in detail via UV-visible spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The energy state of the MWNTs was significantly modified by the electrostatic binding between the nanoparticles and carboxylated MWNTs, resulting in absorption at approximately 250 nm. XPS analysis also proved the electronic redistribution of the nanoparticles and the MWNTs. The binding energies of the elements Cd, Se, and Te were definitely changed by the attractive interaction between the nanoparticles and the MWNTs. The distribution of the CdTe or CdSe nanoparticles and the morphologies of the MWNT composites were deliberately investigated from TEM images and XRD.
authors: Department of Materials and Components Engineering, Electronic Ceramics Center, Dong-Eui University, Busan 614-714, Rep. of Korea.
authors: Mohammad Mahbub
authors: MM
authors: Rabbani
authors: Jong-Seong
authors: JS
authors: Bae
authors: Dukeun
authors: D
authors: Kim
authors: Chang Hyun
authors: CH
authors: Ko
authors: Dae-Geun
authors: DG
authors: Nam
authors: Yangdo
authors: Y
authors: Kim
authors: Jeong Hyun
authors: JH
authors: Yeum
authors: Weontae
authors: W
authors: Oh