Abstract
A one-pot microwave assisted polyol process is used to prepare bismuth telluride nanostructures as a potential contrast agent in X-ray computed tomography imaging. The effect of reaction time, reaction temperature and tannic acid as surface coating agent on the morphology of prepared bismuth telluride nanostructures is investigated. Nanoflakes with dimensions of about 200–250 nm and thickness of 50–60 nm are formed in the presence of tannic acid. The synthesis of Bi2Te3 with rhombohedral structure is confirmed via X-ray powder diffraction (XRD) analysis. Fourier transform infrared analysis (FTIR) demonstrates the presence of tannic acid on the surface of Bi2Te3 nanoflakes. Finally, the X-ray attenuation of prepared Bi2Te3 nanoflakes is higher than commercial contrast agent based on iodinated molecules (Iohexol) at the same concentrations for a broad range of X-ray photon energy.
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