ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Platnich_ChemRxiv.pdf (4.02 MB)

Simple Solvothermal Approach to Highly Nanostructured Hematite Thin Films

preprint
submitted on 28.07.2020 and posted on 29.07.2020 by Casey M. Platnich, Jachym Slaby, David O'Connell, Simon Trudel
In this work, we present a solvothermal method for the synthesis of hematite thin films on fluorine-doped tin oxide
substrates. This simple method uses a precursor solution of iron(III) 2,4-pentanedionate dissolved in ethanol with a
microliter-scale amount of water and yields hematite ~ 500-nm thick films after annealing. The synthesised films
were characterised using an array of methods, including scanning electron microscopy, energy-dispersive X-ray spectroscopy, diffuse reflectance, and powder x-ray diffraction. Incorporating water into the precursor solution provides nucleation sites for the reaction and results show that by altering the amount of water used in the synthesis, it is possible to generate nanocrystalline films of different morphologies, nanocrystal size distributions, and surface areas. This synthetic procedure therefore provides control over the films’ physical and electrochemical characteristics. Doping of hematite thin films is also possible using this synthesis, as exemplified by doping with tin by adding tin(II) 2,4-pentanedionate to the precursor solution. To demonstrate utility, we build prototype photoelectrochemical cells using the synthesized hemtatite as the photoanode.

Funding

NSERC Discovery Grant

TASSEP

Canada School of Energy and Environment (Proof-of-Concept Grant)

History

Email Address of Submitting Author

trudels@ucalgary.ca

Institution

University of Calgary

Country

Canada

ORCID For Submitting Author

0000-0001-5757-2219

Declaration of Conflict of Interest

no conflicts to declare

Version Notes

initial version

Exports

Read the published paper

in Canadian Journal of Chemistry

Logo branding

Exports