Growth of a mesoporous Zr-MOF on functionalized graphene oxide as an efficient adsorbent for recovering uranium (VI) from wastewater
Autor: | Qiang Wang, Chunhong Zhang, Lijia Liu, Jinru Nian, Hongxing Dong, Ming Yang, Changlong Bi, Xu Zhang, Fuqiu Ma, Lien Zhu, Shixi Guo, Qingtao Lv |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Graphene Sonication Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Adsorption chemistry Chemical engineering Wastewater Mechanics of Materials law Monolayer General Materials Science 0210 nano-technology Selectivity Mesoporous material |
Zdroj: | Microporous and Mesoporous Materials. 323:111223 |
ISSN: | 1387-1811 |
DOI: | 10.1016/j.micromeso.2021.111223 |
Popis: | In this study, a mesoporous PCN-222/GO-COOH adsorbent, based on the growth of a mesoporous zirconium-metalloporphyrin metal-organic framework (PCN-222) on the carboxylated graphene oxide (GO-COOH) to recover U(VI) from wastewater, was designed and prepared through solvothermal method and ultrasonication assisted stir technique. The U(VI) adsorption performance of the PCN-222/GO-COOH adsorbent was evaluated. The results indicated that the mesoporous PCN-222/GO-COOH adsorbent could effectively recover U(VI) and show an excellent adsorption capacity (426 mg/g), which was superior to those of GO-COOH and PCN-222 probably because the complexation and synergistic effect between GO-COOH and PCN-222 were facilitated by the ultrasonication assisted stir technique. And the PCN-222/GO-COOH adsorbent showed excellent reusability and selectivity for U(VI) adsorption, which also had outstanding adsorption performances in the complex wastewater. Furthermore, the chemical and monolayer adsorption dominated the U(VI) adsorption behavior of PCN-222/GO-COOH adsorbent. The excellent adsorption capacity, selectivity and reusability for U(VI) rendered PCN-222/GO-COOH composites as a promising adsorbent for recovering U(VI) from wastewater. |
Databáze: | OpenAIRE |
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