X-ray Absorption Improvement of Single Wall Carbon Nanotube through Gadolinium Encapsulation

10th Joint Conference on Chemistry

Alimin^1,2 ; Narsito, I.^2 ; Kartini^2 ; Santosa, S.J.^2

Department of Chemistry, Universitas Gadjah Mada, Sekip Utara BLS 21, Yogyakarta

55281, Indonesia^1

Department of Chemistry, Universitas Halu Oleo, Kampus Hijau Bumi Tridharma Anduonohu, Kendari

93232, Indonesia^2

关键词: Gd nanoparticle;    Liquid phase adsorption;    Mass attenuation coefficients;    Nitrogen adsorption isotherm;    Nitrogen uptake;    Radial breathing mode;    Residual weight;    Thermal gravimetric analyses (TGA);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/107/1/012051/pdf
DOI  :  10.1088/1757-899X/107/1/012051

来源: IOP

【 摘 要 】

X-ray absorption improvement of single-wall carbon nanotube (SWCNT) through gadolinium (Gd) encapsulation has been studied. The liquid phase adsorption using ethanol has been performed for the doping treatment. The Gd-doped SWCNT (Gd@SWCNT) was characterized by nitrogen adsorption isotherms, Raman spectroscopy, Transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA) techniques. A relatively high residual weight of Gd@SWCNT compared to non-doped SWCNT (n-SWCNT) indicated that Gd has been doped in the nanotube. Even though Gd nanoparticles could not be observed clearly by TEM image, however, a significant decrease of nitrogen uptakes at low pressure and RBM (Radial Breathing Mode) upshift of Raman spectra of Gd@SWCNT specimen suggest that the metal nanoparticles might be encapsulated in the internal tube spaces of the nanotube. It was found that Gd-doped in the SWCNT increased significantly mass attenuation coefficient of the nanotube.