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Efficient scavenging of uranium (VI) using porous hexagonal boron nitride by a combined process of surface adsorption and induced precipitation crystallization |
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| Authors: | Li Li Zhao Yin Jin Yang Linghu Wensheng Chen Chaogui Asiri Abdullah M Marwani Hadi M Sheng Guodong |
| Institution: | 1.College of Chemistry and Chemical Engineering, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, Zhejiang, People’s Republic of China ;2.Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia ; |
| Abstract: | An ammonium/hydroxyl-enriched p-BN microrods were synthesized and the adsorption behavior of uranyl on p-BN was systematically studied. The adsorption kinetic and isotherm studies revealed the adsorption behavior is independent on electrostatic attraction or chemisorption. The results demonstrate uranyl hydrolyzed precipitated crystals are formed on the surface of p-BN at an optimized pH of 2.86 and the maximum adsorption capacity can reach 413 mg g?1 at T?=?303 K. A hypothetical adsorption mechanism with a combination of surface adsorption and induced precipitation crystallization was proposed. |
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