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Ni-Doped Ordered Nanoporous Carbon Prepared from Chestnut Wood Tannins for the Removal and Photocatalytic Degradation of Methylene Blue
| Content Provider | MDPI |
|---|---|
| Author | Elena, Rodríguez-Aguado Enrique, Rodríguez Castellón Bello, Ruby Smith, Victoria A. Grachev, Dmitry Bashkova, Svetlana |
| Copyright Year | 2022 |
| Description | In this work, Ni-doped ordered nanoporous carbon was prepared by a simple and green one-pot solvent evaporation induced self-assembly process, where chestnut wood tannins were used as a precursor, $Pluronic^{®}$ F-127 as a soft template, and $Ni^{2+}$ as a crosslinking agent and catalytic component. The prepared carbon exhibited a 2D hexagonally ordered nanorod array mesoporous structure with an average pore diameter of ~5 nm. Nickel was found to be present on the surface of nanoporous carbon in the form of nickel oxide, nickel hydroxide, and metallic nickel. Nickel nanoparticles, with an average size of 13.1 nm, were well dispersed on the carbon surface. The synthesized carbon was then tested for the removal of methylene blue under different conditions. It was found that the amount of methylene blue removed increased with increasing pH and concentration of carbon but decreased with increasing concentration of methylene blue. Furthermore, photocatalytic tests carried out under visible light illumination showed that purple light had the greatest effect on the methylene blue adsorption/degradation, with the maximum percent degradation achieved at ~4 h illumination time, and that the percent degradation at lower concentrations of methylene blue was much higher than that at higher concentrations. The adsorption/degradation process exhibited pseudo second-order kinetics and strong initial adsorption, and the prepared carbon showed high magnetic properties and good recyclability. |
| Starting Page | 1625 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12101625 |
| Journal | Nanomaterials |
| Issue Number | 10 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-10 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Ordered Nanoporous Carbon Water Purification Photocatalysis Visible Light Nickel Soft-templating Methylene Blue Adsorption |
| Content Type | Text |
| Resource Type | Article |
