Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption
In order to explore the effect of –OH functional groups in Cs+ adsorption, we herein used the low temperature plasma-induced grafting method to graft chitosan onto carbon nanotubes (denoted as CTS-g-CNTs), as raw-CNTs have few functional groups and chitosan has a large number of –OH functional group...
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| Format: | Article |
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MDPI AG
2015-05-01
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| Series: | Marine Drugs |
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| Online Access: | http://www.mdpi.com/1660-3397/13/5/3116 |
| _version_ | 1811184806793314304 |
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| author | Shubin Yang Dadong Shao Xiangke Wang Guangshun Hou Masaaki Nagatsu Xiaoli Tan Xuemei Ren Jitao Yu |
| author_facet | Shubin Yang Dadong Shao Xiangke Wang Guangshun Hou Masaaki Nagatsu Xiaoli Tan Xuemei Ren Jitao Yu |
| author_sort | Shubin Yang |
| collection | DOAJ |
| description | In order to explore the effect of –OH functional groups in Cs+ adsorption, we herein used the low temperature plasma-induced grafting method to graft chitosan onto carbon nanotubes (denoted as CTS-g-CNTs), as raw-CNTs have few functional groups and chitosan has a large number of –OH functional groups. The synthesized CTS-g-CNT composites were characterized using different techniques. The effect of –OH functional groups in the Cs+ adsorption process was evaluated by comparison of the adsorption properties of raw-CNTs with and without grafting chitosan. The variation of environmental conditions such as pH and contact time was investigated. A comparison of contaminated seawater and simulated groundwater was also evaluated. The results indicated that: (1) the adsorption of Cs+ ions was strongly dependent on pH and the competitive cations; (2) for CNT-based material, the –OH functional groups have a positive effect on Cs+ removal; (3) simulated contaminated groundwater can be used to model contaminated seawater to evaluate the adsorption property of CNTs-based material. These results showed direct observational evidence on the effect of –OH functional groups for Cs+ adsorption. Our findings are important in providing future directions to design and to choose effective material to remedy the removal of radioactive cesium from contaminated groundwater and seawater, crucial for public health and the human social environment. |
| first_indexed | 2024-04-11T13:18:42Z |
| format | Article |
| id | doaj.art-f7d979e44489452db79e569942d6f68f |
| institution | Directory Open Access Journal |
| issn | 1660-3397 |
| language | English |
| last_indexed | 2024-04-11T13:18:42Z |
| publishDate | 2015-05-01 |
| publisher | MDPI AG |
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| series | Marine Drugs |
| spelling | doaj.art-f7d979e44489452db79e569942d6f68f2022-12-22T04:22:18ZengMDPI AGMarine Drugs1660-33972015-05-011353116313110.3390/md13053116md13053116Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ AdsorptionShubin Yang0Dadong Shao1Xiangke Wang2Guangshun Hou3Masaaki Nagatsu4Xiaoli Tan5Xuemei Ren6Jitao Yu7School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, ChinaSchool of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, ChinaSchool of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, ChinaInstitute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, ChinaGraduate School of Science and Technology, Shizuoka University, 3-5-1, Johoka-ku, Hamamatsu 432-8561, JapanSchool of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, ChinaSchool of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, ChinaInstitute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, ChinaIn order to explore the effect of –OH functional groups in Cs+ adsorption, we herein used the low temperature plasma-induced grafting method to graft chitosan onto carbon nanotubes (denoted as CTS-g-CNTs), as raw-CNTs have few functional groups and chitosan has a large number of –OH functional groups. The synthesized CTS-g-CNT composites were characterized using different techniques. The effect of –OH functional groups in the Cs+ adsorption process was evaluated by comparison of the adsorption properties of raw-CNTs with and without grafting chitosan. The variation of environmental conditions such as pH and contact time was investigated. A comparison of contaminated seawater and simulated groundwater was also evaluated. The results indicated that: (1) the adsorption of Cs+ ions was strongly dependent on pH and the competitive cations; (2) for CNT-based material, the –OH functional groups have a positive effect on Cs+ removal; (3) simulated contaminated groundwater can be used to model contaminated seawater to evaluate the adsorption property of CNTs-based material. These results showed direct observational evidence on the effect of –OH functional groups for Cs+ adsorption. Our findings are important in providing future directions to design and to choose effective material to remedy the removal of radioactive cesium from contaminated groundwater and seawater, crucial for public health and the human social environment.http://www.mdpi.com/1660-3397/13/5/3116carbon nanotube (CNTs)chitosanCs+ adsorption–OH functional groups |
| spellingShingle | Shubin Yang Dadong Shao Xiangke Wang Guangshun Hou Masaaki Nagatsu Xiaoli Tan Xuemei Ren Jitao Yu Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption Marine Drugs carbon nanotube (CNTs) chitosan Cs+ adsorption –OH functional groups |
| title | Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption |
| title_full | Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption |
| title_fullStr | Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption |
| title_full_unstemmed | Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption |
| title_short | Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the –OH Functional Group Affects Cs+ Adsorption |
| title_sort | design of chitosan grafted carbon nanotubes evaluation of how the oh functional group affects cs adsorption |
| topic | carbon nanotube (CNTs) chitosan Cs+ adsorption –OH functional groups |
| url | http://www.mdpi.com/1660-3397/13/5/3116 |
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