N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption
Herein, the precursor polyphosphazene was synthesized by the polymerization of hexachlorocyclotriphosphazene (HCCP) and bis(4-hydroxyphenyl) sulfone (BPS). The adsorbent which was codoped with N, P and S (amidate-CS) was developed from the precursor by using the carbonization method. The images of S...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2021
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| Online Access: | https://hdl.handle.net/10356/154610 |
| _version_ | 1826125322920132608 |
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| author | Liu, Yan Ouyang, Yunfei Huang, Dejuan Jiang, Chao Liu, Xiaopeng Wang, Yun Dai, Ying Yuan, Dingzhong Chew, Jia Wei |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Liu, Yan Ouyang, Yunfei Huang, Dejuan Jiang, Chao Liu, Xiaopeng Wang, Yun Dai, Ying Yuan, Dingzhong Chew, Jia Wei |
| author_sort | Liu, Yan |
| collection | NTU |
| description | Herein, the precursor polyphosphazene was synthesized by the polymerization of hexachlorocyclotriphosphazene (HCCP) and bis(4-hydroxyphenyl) sulfone (BPS). The adsorbent which was codoped with N, P and S (amidate-CS) was developed from the precursor by using the carbonization method. The images of Scanning electron microscope (SEM) and Transmission electron microscope (TEM) indicate that the amidate-CS possessed porous graphene-like carbon lamellar structure. The excellent behaviors with respect to kinetics (120 min for equilibrium) and thermodynamics (maximum removal of 290 mg/g when pH was at 6.0) revealed the outstanding performance of amidate-CS in removing U(VI), which is due to the functional groups and strong covalent bonds between heteroatoms and uranyl ions. The adsorption of amidate-CS followed the pseudo-second-order kinetic and Langmuir adsorption model. The thermodynamic parameters indicate that the process was spontaneous and endothermic. The adsorption and desorption efficiency of amidate-CS had a slight decrease after five cycles, indicating excellent regeneration performance. Overall, the amidate-CS is a prospective candidate for highly selective U(VI) removing. |
| first_indexed | 2024-10-01T06:34:25Z |
| format | Journal Article |
| id | ntu-10356/154610 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:34:25Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1546102021-12-29T05:34:33Z N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption Liu, Yan Ouyang, Yunfei Huang, Dejuan Jiang, Chao Liu, Xiaopeng Wang, Yun Dai, Ying Yuan, Dingzhong Chew, Jia Wei School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Engineering::Chemical engineering Polyphosphazene Amidate Herein, the precursor polyphosphazene was synthesized by the polymerization of hexachlorocyclotriphosphazene (HCCP) and bis(4-hydroxyphenyl) sulfone (BPS). The adsorbent which was codoped with N, P and S (amidate-CS) was developed from the precursor by using the carbonization method. The images of Scanning electron microscope (SEM) and Transmission electron microscope (TEM) indicate that the amidate-CS possessed porous graphene-like carbon lamellar structure. The excellent behaviors with respect to kinetics (120 min for equilibrium) and thermodynamics (maximum removal of 290 mg/g when pH was at 6.0) revealed the outstanding performance of amidate-CS in removing U(VI), which is due to the functional groups and strong covalent bonds between heteroatoms and uranyl ions. The adsorption of amidate-CS followed the pseudo-second-order kinetic and Langmuir adsorption model. The thermodynamic parameters indicate that the process was spontaneous and endothermic. The adsorption and desorption efficiency of amidate-CS had a slight decrease after five cycles, indicating excellent regeneration performance. Overall, the amidate-CS is a prospective candidate for highly selective U(VI) removing. We appreciate the financial support from the National Natural Science Foundation of China (11705027, 11605027, 21966005, 216610003, 41867063), the Opening fund project of State Key Laboratory of Nuclear Resources and Environment, East China University of Technology (NRE1926), the Natural Science Foundation of Jiangxi Province (20192BAB202007, 20192ACB21001). 2021-12-29T05:34:33Z 2021-12-29T05:34:33Z 2020 Journal Article Liu, Y., Ouyang, Y., Huang, D., Jiang, C., Liu, X., Wang, Y., Dai, Y., Yuan, D. & Chew, J. W. (2020). N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption. Science of the Total Environment, 706, 136019-. https://dx.doi.org/10.1016/j.scitotenv.2019.136019 0048-9697 https://hdl.handle.net/10356/154610 10.1016/j.scitotenv.2019.136019 31855636 2-s2.0-85076338461 706 136019 en Science of the Total Environment © 2019 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Polyphosphazene Amidate Liu, Yan Ouyang, Yunfei Huang, Dejuan Jiang, Chao Liu, Xiaopeng Wang, Yun Dai, Ying Yuan, Dingzhong Chew, Jia Wei N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption |
| title | N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption |
| title_full | N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption |
| title_fullStr | N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption |
| title_full_unstemmed | N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption |
| title_short | N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption |
| title_sort | n p and s co doped carbon materials derived from polyphosphazene for enhanced selective u vi adsorption |
| topic | Engineering::Chemical engineering Polyphosphazene Amidate |
| url | https://hdl.handle.net/10356/154610 |
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