Synthesis of modified graphene/ZnO nanocomposite and its application for removal of the heavy metal ions from aqueous solutions
The existence of heavy metals in nature is one of the pressing concerns because of their toxicity and threat to human life. The aim of this study is the preparation of suitable adsorbent for heavy metal adsorption from the waste water using nanotechnology. In this work, modified graphene/ZnO (MG/ZnO...
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| Format: | Article |
| Language: | fas |
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Nuclear Science and Technology Research Institute
2019-08-01
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| Series: | مجله علوم و فنون هستهای |
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| Online Access: | https://jonsat.nstri.ir/article_1001_f446e43b4b069b9f65dd32e6ca5413bd.pdf |
| _version_ | 1797835168001556480 |
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| author | S.S Sajadi |
| author_facet | S.S Sajadi |
| author_sort | S.S Sajadi |
| collection | DOAJ |
| description | The existence of heavy metals in nature is one of the pressing concerns because of their toxicity and threat to human life. The aim of this study is the preparation of suitable adsorbent for heavy metal adsorption from the waste water using nanotechnology. In this work, modified graphene/ZnO (MG/ZnO) nanocomposite was first synthesized. The as-prepared composite was then used as an adsorbent for heavy metal removal, and its adsorption efficiency was compared with the modified graphene and ZnO nanoparticles. Adsorption efficiency of the modified graphene/ZnO was found higher than modified graphene and ZnO nanoparticles. The influence of the effective parameters on the adsorption process was studied and optimized. The obtained optimum conditions were: time = 30 min, an adsorbent dosage of 0.03 g/L, pH of 6, and T = 25˚C. The experimental data were best described by the pseudo-second-order kinetic and Langmuir isotherm models. The obtained thermodynamic parameters indicate that the adsorption process was exothermic and spontaneous. |
| first_indexed | 2024-04-09T14:48:53Z |
| format | Article |
| id | doaj.art-73120300c34f4f7b86f8e2c76f370c87 |
| institution | Directory Open Access Journal |
| issn | 1735-1871 2676-5861 |
| language | fas |
| last_indexed | 2024-04-09T14:48:53Z |
| publishDate | 2019-08-01 |
| publisher | Nuclear Science and Technology Research Institute |
| record_format | Article |
| series | مجله علوم و فنون هستهای |
| spelling | doaj.art-73120300c34f4f7b86f8e2c76f370c872023-05-02T10:16:15ZfasNuclear Science and Technology Research Instituteمجله علوم و فنون هستهای1735-18712676-58612019-08-01402849110.24200/nst.2019.10011001Synthesis of modified graphene/ZnO nanocomposite and its application for removal of the heavy metal ions from aqueous solutionsS.S Sajadi0پژوهشکدهی مواد و سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایرانThe existence of heavy metals in nature is one of the pressing concerns because of their toxicity and threat to human life. The aim of this study is the preparation of suitable adsorbent for heavy metal adsorption from the waste water using nanotechnology. In this work, modified graphene/ZnO (MG/ZnO) nanocomposite was first synthesized. The as-prepared composite was then used as an adsorbent for heavy metal removal, and its adsorption efficiency was compared with the modified graphene and ZnO nanoparticles. Adsorption efficiency of the modified graphene/ZnO was found higher than modified graphene and ZnO nanoparticles. The influence of the effective parameters on the adsorption process was studied and optimized. The obtained optimum conditions were: time = 30 min, an adsorbent dosage of 0.03 g/L, pH of 6, and T = 25˚C. The experimental data were best described by the pseudo-second-order kinetic and Langmuir isotherm models. The obtained thermodynamic parameters indicate that the adsorption process was exothermic and spontaneous.https://jonsat.nstri.ir/article_1001_f446e43b4b069b9f65dd32e6ca5413bd.pdfnanocompositemodified grapheneznoheavy metals |
| spellingShingle | S.S Sajadi Synthesis of modified graphene/ZnO nanocomposite and its application for removal of the heavy metal ions from aqueous solutions مجله علوم و فنون هستهای nanocomposite modified graphene zno heavy metals |
| title | Synthesis of modified graphene/ZnO nanocomposite and its
application for removal of the heavy metal ions from aqueous solutions |
| title_full | Synthesis of modified graphene/ZnO nanocomposite and its
application for removal of the heavy metal ions from aqueous solutions |
| title_fullStr | Synthesis of modified graphene/ZnO nanocomposite and its
application for removal of the heavy metal ions from aqueous solutions |
| title_full_unstemmed | Synthesis of modified graphene/ZnO nanocomposite and its
application for removal of the heavy metal ions from aqueous solutions |
| title_short | Synthesis of modified graphene/ZnO nanocomposite and its
application for removal of the heavy metal ions from aqueous solutions |
| title_sort | synthesis of modified graphene zno nanocomposite and its application for removal of the heavy metal ions from aqueous solutions |
| topic | nanocomposite modified graphene zno heavy metals |
| url | https://jonsat.nstri.ir/article_1001_f446e43b4b069b9f65dd32e6ca5413bd.pdf |
| work_keys_str_mv | AT sssajadi synthesisofmodifiedgrapheneznonanocompositeanditsapplicationforremovaloftheheavymetalionsfromaqueoussolutions |