Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent
Graphene oxide (GO) is expected to be one of the most promising adsorbents for metal ions, including radioactive nuclides in aqueous solutions. Large-area and single-layer graphene oxide (SLGO) grown on α-Al2O3(0001) was used as a model structure of GO since the aggregation and re-stacking of the GO...
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| Language: | English |
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Beilstein-Institut
2025-07-01
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| Series: | Beilstein Journal of Nanotechnology |
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| Online Access: | https://doi.org/10.3762/bjnano.16.79 |
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| author | Shiro Entani Mitsunori Honda Masaru Takizawa Makoto Kohda |
| author_facet | Shiro Entani Mitsunori Honda Masaru Takizawa Makoto Kohda |
| author_sort | Shiro Entani |
| collection | DOAJ |
| description | Graphene oxide (GO) is expected to be one of the most promising adsorbents for metal ions, including radioactive nuclides in aqueous solutions. Large-area and single-layer graphene oxide (SLGO) grown on α-Al2O3(0001) was used as a model structure of GO since the aggregation and re-stacking of the GO sheets prevent the adequate analysis of the adsorption state. The SLGO film was obtained by oxidizing monolayer graphene grown by metal-free chemical vapor deposition on the α-Al2O3(0001) surface, and the adsorption state was determined by surface analytical techniques. It was clarified that Cs adsorbs on oxygen functional groups by substituting with H atoms from carboxyl and hydroxy groups. It is also estimated that the weight adsorption capacity of SLGO in the 1.0 mol/L-Cs aqueous solution is as much as approximately 70 wt %. It has been demonstrated that GO has great potential to be a promising adsorbent for Cs in aqueous solutions. |
| format | Article |
| id | doaj-art-14f09c2f084f4e42bb73836235e7fc4e |
| institution | DOAJ |
| issn | 2190-4286 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj-art-14f09c2f084f4e42bb73836235e7fc4e2025-08-20T02:40:35ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862025-07-011611082108710.3762/bjnano.16.792190-4286-16-79Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbentShiro Entani0Mitsunori Honda1Masaru Takizawa2Makoto Kohda3Quantum Materials and Applications Research Center, National Institutes for Quantum Science and Technology, Takasaki, Gunma 370-1292, Japan Honda’s Lab for Development of Future Clay Materials Research, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan College of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan Quantum Materials and Applications Research Center, National Institutes for Quantum Science and Technology, Takasaki, Gunma 370-1292, Japan Graphene oxide (GO) is expected to be one of the most promising adsorbents for metal ions, including radioactive nuclides in aqueous solutions. Large-area and single-layer graphene oxide (SLGO) grown on α-Al2O3(0001) was used as a model structure of GO since the aggregation and re-stacking of the GO sheets prevent the adequate analysis of the adsorption state. The SLGO film was obtained by oxidizing monolayer graphene grown by metal-free chemical vapor deposition on the α-Al2O3(0001) surface, and the adsorption state was determined by surface analytical techniques. It was clarified that Cs adsorbs on oxygen functional groups by substituting with H atoms from carboxyl and hydroxy groups. It is also estimated that the weight adsorption capacity of SLGO in the 1.0 mol/L-Cs aqueous solution is as much as approximately 70 wt %. It has been demonstrated that GO has great potential to be a promising adsorbent for Cs in aqueous solutions.https://doi.org/10.3762/bjnano.16.79cesium adsorptionchemical vapor depositionelectronic state analysisgraphene oxidex-ray absorption fine structure |
| spellingShingle | Shiro Entani Mitsunori Honda Masaru Takizawa Makoto Kohda Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent Beilstein Journal of Nanotechnology cesium adsorption chemical vapor deposition electronic state analysis graphene oxide x-ray absorption fine structure |
| title | Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent |
| title_full | Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent |
| title_fullStr | Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent |
| title_full_unstemmed | Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent |
| title_short | Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent |
| title_sort | single layer graphene oxide film grown on α al2o3 0001 for use as an adsorbent |
| topic | cesium adsorption chemical vapor deposition electronic state analysis graphene oxide x-ray absorption fine structure |
| url | https://doi.org/10.3762/bjnano.16.79 |
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