Adsorption of Th(IV) from aqueous solution by the graphene oxide nanoribbons/chitosan composite material
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In order to reduce the potential toxicity to the environment after treatment of radioactive waste water, an eco-friendly graphene oxide nanoribbons/chitosan (GONRs-CTS) composite was prepared and utilized for adsorption of Th(IV) from aqueous solution. The GONRs-CTS adsorbent was characterized by XRD, FTIR and SEM, indicating that GONRs-CTS contains a large amount of oxygen-containing groups and chitosan was successfully attached to the GONRs surface. The Th(IV) adsorption on GONRs-CTS was endothermic and spontaneous, with the maximum single layer adsorption capacity was 140.6 mg g−1 at pH = 3.0, in the contact time of 12 h. The adsorption process was consistent with pseudo-second-order kinetics and the Langmuir isotherm model.
KeywordsGraphene oxide nanoribbons Chitosan Th(IV) Adsorption
This work was financially supported by the National Natural Science Foundation of China (21601033, 21866006, 11875105, 21661003, 11705027), and Jiangxi Province Key Subjects Academy and Technique Leaders Funding Project (20172BCB22020), Natural Science Funds for Distinguished Young Scholar of Jiangxi Province (20171BCB23067), Open Project Foundation of Nuclear Technology Application Ministry of Education Engineering Research Center (East China University of Technology) (HJSJYB2016-6), Open Project Foundation of Stake key Laboratory of Nuclear Resources and Environment (East China University of Technology) (NRE1509), the Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory (No. 16kfhk02).
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