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Adsorption of uranium(VI) on mesoporous silica microspheres supported titanium hydroxide hybrid material

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In order to improve the utilization rate of hydroxyl group as the key ingredient for titanium hydroxide (TH) applying to the adsorption of U(VI) from aqueous solution, mesoporous silica microspheres… Click to show full abstract

In order to improve the utilization rate of hydroxyl group as the key ingredient for titanium hydroxide (TH) applying to the adsorption of U(VI) from aqueous solution, mesoporous silica microspheres supported titanium hydroxide (TH/SiO2) have been synthesized, which have characteristics of high specific surface area and easy separation compared to TH. The maximum adsorption capacity of 219 mg g−1 on TH/SiO2 which can be converted to 1086 mg g−1 on TH was achieved. The adsorption mechanism of U(VI) adsorbed on TH/SiO2 was mainly dominated by inner-sphere surface complexation.

Keywords: adsorption; silica microspheres; titanium hydroxide; mesoporous silica

Journal Title: Journal of Radioanalytical and Nuclear Chemistry
Year Published: 2018

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