Abstract
In this work, the effects of sodium formate on adsorption and photocatalytic reduction of U(VI) on the TiO2 surface were investigated. The results showed that sodium formate may enhance the adsorption of U(VI) on the TiO2 surface, the maximum adsorption capacity of U(VI) in the presence of sodium formate increased by 44 mg g−1. In addition, the photocatalytic reduction of U(VI) can be also enhanced, the reduction rate constant of U(VI) in the presence of sodium formate increased 17-fold. Results from XPS analysis clearly indicated the reduction of U(VI) to U(IV) on the TiO2 surface.
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Acknowledgments
This work was financed by the Natural Science Foundation of China (41261078, 40861017), the Natural Science Foundation of Jiangxi, China (20114BAB203029) and the Science Funds of the Education Office of Jiangxi, China (GJJ12374). The authors thank the anonymous reviewers for their comments.
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Wang, G., Zhen, J., Zhou, L. et al. Adsorption and photocatalytic reduction of U(VI) in aqueous TiO2 suspensions enhanced with sodium formate . J Radioanal Nucl Chem 304, 579–585 (2015). https://doi.org/10.1007/s10967-014-3831-5
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DOI: https://doi.org/10.1007/s10967-014-3831-5