One-step synthesis of Ag@polyaniline core –shell particles for efficient removal of radioactive iodine

AbstractA silver-based material coated with polyaniline (Ag@PANI) was successfully synthesized to effectively remove I2 and I−. Experimental results showed the sorption capacity of I2 by Ag@PANI reached 132 wt.%, and the I− uptake capacity reached 419.6  mg·g−1. Additionally, Ag@PANI could effectively remove up to 99.9% of low I−-contaminated water, and the distribution coefficient (Kd) toward I− reaches 4.65  × 106 mL·g−1. Adsorption mechanism showed I2 and I− were immobilized on Ag@PANI by conversion to AgI. Moreover, electrostatic interactions might result in higher I− retention ability. Overall, Ag@PANI can be employed as promising adsorbent for the efficient removal of radioactive iodine.
Source: Journal of Radioanalytical and Nuclear Chemistry - Category: Nuclear Medicine Source Type: research