Tuning the band gap of ferritin nanoparticles by co-depositing iron with halides or oxo-anions

Autor:	Catalina Matias Orozco, Lance M. Moses, Richard Watt, John Colton, Trevor Smith, Andrew Fluckiger, Stephen Erickson
Rok vydání:	2014
Předmět:	Mineral biology Renewable Energy Sustainability and the Environment Band gap Chemistry Inorganic chemistry Halide Nanoparticle General Chemistry Ion Ferritin Ferrihydrite biology.protein Photocatalysis General Materials Science
Zdroj:	J. Mater. Chem. A. 2:20782-20788
ISSN:	2050-7496 2050-7488
DOI:	10.1039/c4ta04588b
Popis:	Iron-containing ferritin has been used for light harvesting and as a photocatalyst. In this study, we test the hypothesis that changing the iron mineral core composition can alter the light harvesting and photocatalytic properties of ferritin, by co-depositing iron in the presence of halides or oxo-anions. This caused the anions to be incorporated into the iron mineral. We report that some of these new iron minerals possess different band gaps than the original ferrihydrite within ferritin. We found an increase in band gap of up to 0.288 eV or a decrease by as much as 0.104 eV, depending on the type of anion and amount of anions incorporated into the ferrihydrite mineral.
Databáze:	OpenAIRE
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