Permanganate-based synthesis of manganese oxide nanoparticles in ferritin
| Autor: | Jake H Maxfield, John Colton, David Buck, Richard Watt, J. Ryan Peterson, Jacob Embley, Cameron Olsen, Andrew M Henrichsen, Kameron R. Hansen, Trevor Smith, Stephen Erickson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Band gap Inorganic chemistry chemistry.chemical_element Bioengineering 02 engineering and technology Manganese 010402 general chemistry 01 natural sciences chemistry.chemical_compound General Materials Science Electrical and Electronic Engineering chemistry.chemical_classification biology Mechanical Engineering Permanganate General Chemistry Comproportionation Electron acceptor 021001 nanoscience & nanotechnology 0104 chemical sciences Ferritin chemistry Mechanics of Materials biology.protein Direct and indirect band gaps Absorption (chemistry) 0210 nano-technology |
| Zdroj: | Nanotechnology. 28:195601 |
| ISSN: | 1361-6528 0957-4484 |
| Popis: | This paper investigates the comproportionation reaction of MnII with [Formula: see text] as a route for manganese oxide nanoparticle synthesis in the protein ferritin. We report that [Formula: see text] serves as the electron acceptor and reacts with MnII in the presence of apoferritin to form manganese oxide cores inside the protein shell. Manganese loading into ferritin was studied under acidic, neutral, and basic conditions and the ratios of MnII and permanganate were varied at each pH. The manganese-containing ferritin samples were characterized by transmission electron microscopy, UV/Vis absorption, and by measuring the band gap energies for each sample. Manganese cores were deposited inside ferritin under both the acidic and basic conditions. All resulting manganese ferritin samples were found to be indirect band gap materials with band gap energies ranging from 1.01 to 1.34 eV. An increased UV/Vis absorption around 370 nm was observed for samples formed under acidic conditions, suggestive of MnO2 formation inside ferritin. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|