Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide
Removal of radioactive uranyl ions (UO22+) from water by effective adsorbents is highly desired but remains a challenge. UO22+ are easily combined with H2O, and the polarization of H2O affects the complexation between UO22+ and the adsorbent. Thus, it is necessary to reconstruct the UO22+ active sit...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/170382 |
| _version_ | 1811688014095581184 |
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| author | Liu, Yuhui Lu, Yaning Zhang, Shuang Li, Xiaoyan Zhang, Zhibin Ge, Liya Chang, MengYu Liu, Yunhai Lisak, Grzegorz Deng, Sheng |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Liu, Yuhui Lu, Yaning Zhang, Shuang Li, Xiaoyan Zhang, Zhibin Ge, Liya Chang, MengYu Liu, Yunhai Lisak, Grzegorz Deng, Sheng |
| author_sort | Liu, Yuhui |
| collection | NTU |
| description | Removal of radioactive uranyl ions (UO22+) from water by effective adsorbents is highly desired but remains a challenge. UO22+ are easily combined with H2O, and the polarization of H2O affects the complexation between UO22+ and the adsorbent. Thus, it is necessary to reconstruct the UO22+ active site to improve the adsorption capacity. Herein ，an amphiphilic ligand, namely N, N-dimethyl-9-decenamide (NND), is successfully prepared. NND replace H2O in [UO2(H2O)5]2+ by hydrogen bonding, thereby enhancing the adsorption capacity of MoS2 particles in the reconstituted UO22+ active sites. The predicted maximum adsorption capacity increased from 50.7 to 500.7 mg g- 1 (by a factor of 9.87) with the presence of NND, which is higher than other functional group-modified MoS2 adsorbents. Furthermore, NND and MoS2 can retain UO22+ uptake under extreme conditions including high acid-base and gamma irradiation. Theoretical Calculations of NND through H bonding produces an increased amount of charge transfer and a reduced adsorption energy between UO22+ and MoS2, which weakens the polarization effect of H2O. The findings showed that NND appeared to be a promising amphiphilic to improve the adsorption efficiency of UO22+ from water. |
| first_indexed | 2024-10-01T05:25:28Z |
| format | Journal Article |
| id | ntu-10356/170382 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:25:28Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1703822023-09-11T02:46:54Z Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide Liu, Yuhui Lu, Yaning Zhang, Shuang Li, Xiaoyan Zhang, Zhibin Ge, Liya Chang, MengYu Liu, Yunhai Lisak, Grzegorz Deng, Sheng School of Physical and Mathematical Sciences School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Engineering::Environmental engineering Uranium Molybdenum Disulfide Removal of radioactive uranyl ions (UO22+) from water by effective adsorbents is highly desired but remains a challenge. UO22+ are easily combined with H2O, and the polarization of H2O affects the complexation between UO22+ and the adsorbent. Thus, it is necessary to reconstruct the UO22+ active site to improve the adsorption capacity. Herein ，an amphiphilic ligand, namely N, N-dimethyl-9-decenamide (NND), is successfully prepared. NND replace H2O in [UO2(H2O)5]2+ by hydrogen bonding, thereby enhancing the adsorption capacity of MoS2 particles in the reconstituted UO22+ active sites. The predicted maximum adsorption capacity increased from 50.7 to 500.7 mg g- 1 (by a factor of 9.87) with the presence of NND, which is higher than other functional group-modified MoS2 adsorbents. Furthermore, NND and MoS2 can retain UO22+ uptake under extreme conditions including high acid-base and gamma irradiation. Theoretical Calculations of NND through H bonding produces an increased amount of charge transfer and a reduced adsorption energy between UO22+ and MoS2, which weakens the polarization effect of H2O. The findings showed that NND appeared to be a promising amphiphilic to improve the adsorption efficiency of UO22+ from water. This work was financially supported by the National Natural Science Foundation of China (22266003, 22006013, 21906019) , State Key Laboratory of Nuclear Resources and Environment (2020NRE23) and the Science & Technology Support Program of Jiangxi Province (Grant No. 20212BAB213005). 2023-09-11T02:46:54Z 2023-09-11T02:46:54Z 2023 Journal Article Liu, Y., Lu, Y., Zhang, S., Li, X., Zhang, Z., Ge, L., Chang, M., Liu, Y., Lisak, G. & Deng, S. (2023). Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide. Journal of Hazardous Materials, 442, 130089-. https://dx.doi.org/10.1016/j.jhazmat.2022.130089 0304-3894 https://hdl.handle.net/10356/170382 10.1016/j.jhazmat.2022.130089 36303344 2-s2.0-85139296456 442 130089 en Journal of Hazardous Materials © 2022 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Uranium Molybdenum Disulfide Liu, Yuhui Lu, Yaning Zhang, Shuang Li, Xiaoyan Zhang, Zhibin Ge, Liya Chang, MengYu Liu, Yunhai Lisak, Grzegorz Deng, Sheng Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| title | Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| title_full | Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| title_fullStr | Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| title_full_unstemmed | Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| title_short | Amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| title_sort | amphiphilic ligand in situ assembly of uranyl active sites and selective interactions of molybdenum disulfide |
| topic | Engineering::Environmental engineering Uranium Molybdenum Disulfide |
| url | https://hdl.handle.net/10356/170382 |
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