Abstract
Technetium-99 (99Tc), largely produced by nuclear fission of 235U or 239Pu, is a component of radioactive waste. This study focused on a remediation strategy for the reduction of pertechnetate (TcO -4 ) by studying its chemical analogue rhenium (Re(VII)) to avoid the complication of directly working with radioactive elements. Nanoscale zero-valent iron particles supported on graphene (NZVI/rGOs) from GOs-bound Fe ions were prepared by using a H2/Ar plasma technique and were applied in the reductive immobilization of perrhenate (ReO -4 ). The experimental results demonstrated that NZVI/rGOs could efficiently remove Re from the aqueous solution, with enhanced reactivity, improved kinetics (50 min to reach equilibrium) and excellent removal capacity (85.77 mg/g). The results of X-ray photoelectron spectroscopy analysis showed that the mechanisms of Re immobilization by NZVI/rGOs included adsorption and reduction, which are significant to the prediction and estimation of the effectiveness of reductive TcO -4 by NZVI/rGOs in the natural environment.
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27 November 2019
We regret that our article ���Reductive immobilization of Re(VII) by graphene modified nanoscale zero-valent iron particles using a plasma technique��� (Sci. China Chem., 2016, 59: 150���158) [1] contained errors. The corrections in an erratum do not change or affect the result or conclusion of the paper.
27 November 2019
We regret that our article ���Reductive immobilization of Re(VII) by graphene modified nanoscale zero-valent iron particles using a plasma technique��� (Sci. China Chem., 2016, 59: 150���158) [1] contained errors. The corrections in an erratum do not change or affect the result or conclusion of the paper.
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Li, J., Chen, C., Zhang, R. et al. Reductive immobilization of Re(VII) by graphene modified nanoscale zero-valent iron particles using a plasma technique. Sci. China Chem. 59, 150–158 (2016). https://doi.org/10.1007/s11426-015-5452-4
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DOI: https://doi.org/10.1007/s11426-015-5452-4