16 August 2016 Photocatalytic water oxidation with iron oxide hydroxide (rust) nanoparticles
Author Affiliations +
Abstract
Hematite has attracted considerable interest as a photoanode material for water oxidation under visible illumination. Here, we explore the limits of photocatalytic water oxidation activity with iron (III) oxide hydroxide nanocrystals and NaIO 4 as a sacrificial electron acceptor ( E = 1.63    V NHE at pH = 0.5 ). The sol was prepared by hydrolysis of FeCl 3 in boiling 0.002-M HCl solution and confirmed to mainly consist of ß - FeO ( OH ) (akaganéite) particles with 5 to 15 nm diameter. From a 0.01 M aqueous NaIO 4 solution, the sol evolves between 4.5 and 35.2    μ mol O 2 h 1 , depending on pH, light intensity ( > 400    nm , 290 to 700    mW cm
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Timothy L. Shelton, Bronwyn L. Bensema, Nicholas K. Brune, Christopher Wong, Max Yeh, Frank E. Osterloh, "Photocatalytic water oxidation with iron oxide hydroxide (rust) nanoparticles," Journal of Photonics for Energy 7(1), 012003 (16 August 2016). https://doi.org/10.1117/1.JPE.7.012003 . Submission:
JOURNAL ARTICLE
12 PAGES


SHARE
Back to Top