Abstract

Aerosol-assisted chemical vapour deposition (AACVD) has been used in conjunction with new and bespoke precursors for the fabrication of highly nanostructured, mixed anatase-rutile phase TiO 2. Precursor syntheses were carried out in two steps, reacting tetrakis(dimethylamino)titanium with a triethanolamine-based ligand complex, followed by reaction with the relevant dry solvent. Suitability for AACVD was assessed by thermogravimetric analysis, and the resulting TiO 2 films were characterised by SEM, EDX, Raman, and PXRD, which was used to find relative ratios of anatase and rutile phase in the mixed-system, and respective grain sizes. The resulting TiO 2 films show exceptional OH oxidation performance under simulated solar irradiation, yielding photocurrent densities of 1.06 mA cm −2 at 1.23 V vs. RHE, and a peak incident photon conversion efficiency of 95.6% at 380 nm incident light, indicating their promise for use in photoanodes for water splitting application.

Original languageEnglish
Pages (from-to)3708-3713
Number of pages6
JournalMaterials Advances
Volume4
Issue number17
Early online date1 Aug 2023
DOIs
Publication statusPublished - 1 Aug 2023

Bibliographical note

Publisher Copyright:
© 2023 RSC.

Funding

This work has been supported by the Institute for Sustainability, University of Bath, and Monash University, both of which are thanked for the provision of a joint Bath-Monash Global PhD studentship to T. R. H-L. C. L. B. is the recipient of an Australian Research Council (ARC) Discovery Early Career Researcher Award (DECRA, project number DE200101076), funded by the Australian Government. The authors acknowledge the use of the instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. The authors gratefully acknowledge the Material and Chemical Characterisation Facility (MC) at the University of Bath, http://doi.org/10.15125/mx6j-3r54 , for technical support and assistance in this work. 2

FundersFunder number
Australian Government
Australian Research CouncilDE200101076
Monash University

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