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Title: Fast and high amount of U(VI) uptake by functional magnetic carbon nanotubes with phosphate group
Authors: Liu, Yan
Zhao, Zhengping
Yuan, Dingzhong
Wang, Yun
Dai, Ying
Chew, Jia Wei
Keywords: Engineering::Chemical engineering
Issue Date: 2018
Source: Liu, Y., Zhao, Z., Yuan, D., Wang, Y., Dai, Y., & Chew, J. W. (2018). Fast and high amount of U(VI) uptake by functional magnetic carbon nanotubes with phosphate group. Industrial and Engineering Chemistry Research, 57(43), 14551-14560. doi:10.1021/acs.iecr.8b03864
Journal: Industrial and Engineering Chemistry Research
Abstract: In the present study, PZS-TPP/CNT/Fe3O4 was fabricated by carbon nantubes (CNTs) with polyphosphazene and magnetic particles for application in U(VI) removal. The structure of the synthesized composite was characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), a vibrating sample magnetometer (VSM), and X-ray photoelectron spectroscopy (XPS). Studies of the effects of pH values, U(VI) concentration, contact time, and adsorption temperature including competing ions and reusability to the uranium adsorption were conducted. The calculated qmax from the Langmuir model was 606.06 mg/g. The possible mechanism was investigated by XPS about the uranium-adsorbed PZS-TPP/CNT/Fe3O4, which revealed that the adsorption capacity was mainly due to the coordination ability of phosphoryl groups and nitrogen atoms in the polyphosphazene skeleton. This new material is promising for separation and safe disposal of radionuclides in water.
ISSN: 0888-5885
DOI: 10.1021/acs.iecr.8b03864
Rights: © 2018 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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