title: Potassium niobate nanolamina: a promising adsorbent for entrapment of radioactive cations from water.
abstract: Processing and managing radioactive waste is a great challenge worldwide as it is extremely difficult and costly; the radioactive species, cations or anions, leaked into the environment are a serious threat to the health of present and future generations. We report layered potassium niobate (K4Nb6O17) nanolamina as adsorbent to remove toxic Sr(2+), Ba(2+) and Cs(+) cations from wastewater. The results show that K4Nb6O17 nanolamina can permanently confine the toxic cations within the interlayer spacing via a considerable deformation of the metastable layered structure during the ion exchange process. At the same time, the nanolaminar adsorbent exhibits prompt adsorption kinetics, high adsorption capacity and selectivity, and superior acid resistance. These merits make it be a promising material as ion exchanger for the removal of radioactive cations from wastewater.
authors.affiliation: Collaborative Innovation Centre for Marine Biomass Fibres, Materials and Textiles of Shandong Province; College of Chemical and Environmental Engineering, Qingdao University, Qingdao, P R China.
authors.forename: Jin
authors.initials: J
authors.lastname: Sun
authors.affiliation: 1] Collaborative Innovation Centre for Marine Biomass Fibres, Materials and Textiles of Shandong Province; College of Chemical and Environmental Engineering, Qingdao University, Qingdao, P R China [2] Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan, Brisbane, Queensland 4111, Australia.
authors.forename: Dongjiang
authors.initials: D
authors.lastname: Yang
authors.affiliation: Collaborative Innovation Centre for Marine Biomass Fibres, Materials and Textiles of Shandong Province; College of Chemical and Environmental Engineering, Qingdao University, Qingdao, P R China.
authors.forename: Cuihua
authors.initials: C
authors.lastname: Sun
authors.affiliation: Collaborative Innovation Centre for Marine Biomass Fibres, Materials and Textiles of Shandong Province; College of Chemical and Environmental Engineering, Qingdao University, Qingdao, P R China.
authors.forename: Long
authors.initials: L
authors.lastname: Liu
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, People's Republic of China.
authors.forename: Shuanglei
authors.initials: S
authors.lastname: Yang
authors.affiliation: Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan, Brisbane, Queensland 4111, Australia.
authors.forename: Yi
authors.initials: Y
authors.lastname: Alec Jia
authors.affiliation: Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom.
authors.forename: Rongsheng
authors.initials: R
authors.lastname: Cai
authors.affiliation: Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan, Brisbane, Queensland 4111, Australia.
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Yao
mesh_terms: D000327:Adsorption; D002412:Cations / Q000737:chemistry*; D007700:Kinetics; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry*; D011850:Radioactive Waste / Q000517:prevention & control*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D002412:Cations; D009556:Niobium; D010087:Oxides; D011188:Potassium; D011850:Radioactive Waste; D062065:Wastewater; D014874:Water Pollutants, Chemical; C477466:potassium niobate