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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2037-2049 doi: 10.1007/s11705-023-2358-0

Abstract: Although mesoporous silica with magnetically hybridized two-dimensional channel structures has been well studied in recent years, it remains a challenge to fabricate the counterpart with macroporous three-dimensional cubic structures since the highly acidic preparation conditions lead to dissolution of magnetic particles. Herein, we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistant iron oxide. The prepared materials exhibited excellent properties for U(VI) ions removal from aqueous solutions under various conditions. The experimental data show that the U(VI) adsorption features fast adsorption kinetics, high adsorption capacity and ideal selectivity toward U(VI). The adsorption process is of spontaneous and endothermic nature and ionic strength independence, and the adsorbents can be easily regenerated by acid treatment. Compared to pristine KIT-6, the introduction of magnetism does not reduce the efficiency of the material to remove U(VI) while exerting its role as a recovery adsorbent. The findings of this work further demonstrate the potential broad application prospects of magnetic hybrid mesoporous silica in radionuclide chelation.

Keywords： magnetic nanoparticle     3D mesoporous silica     amino functionalization     adsorption of U(VI)     acid resistance    

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Analysis of frequency characteristics of compliant mechanisms

WANG Wenjing, YU Yueqing

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 267-271 doi: 10.1007/s11465-007-0046-2

Abstract: frequency characteristics of the compliant mechanisms and the proposed method is more accurate and convenient

Keywords： compliant mechanisms     convenient     sensitivity     work     analysis    

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Algal-bloom control by allelopathy of aquatic macrophytes-A review

HU Hongying, HONG Yu

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 421-438 doi: 10.1007/s11783-008-0070-4

Abstract: The development of an environment-friendly, cost-effective, and convenient alternative for controlling

Keywords： development     convenient alternative     inhibitory     application     allelopathic    

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Noise control technology for generator sets in enclosures

ZHANG Nailong, YANG Wentong, FEI Renyuan

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 377-384 doi: 10.1007/s11465-008-0051-0

Abstract: To reduce such noise, a sound-attenuated enclosure is widely used for its high performance and convenient

Keywords： equipment     generator     sound-attenuated enclosure     convenient     Enclosure development    

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Title Author Date Type Operation

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Journal Article

Analysis of frequency characteristics of compliant mechanisms

WANG Wenjing, YU Yueqing

Journal Article

Algal-bloom control by allelopathy of aquatic macrophytes-A review

HU Hongying, HONG Yu

Journal Article

Noise control technology for generator sets in enclosures

ZHANG Nailong, YANG Wentong, FEI Renyuan

Journal Article