High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO2 heterojunctions by pulsed-pressure MOCVD

Aleksandra J. Gardecka; Catherine Bishop; Darryl Lee; Sacha Corby; Ivan P. Parkin; Andreas Kafizas; Susan Krumdieck

doi:10.1016/j.apcatb.2017.11.033

High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO₂ heterojunctions by pulsed-pressure MOCVD

Aleksandra J. Gardecka, Catherine Bishop, Darryl Lee, Sacha Corby, Ivan P. Parkin, Andreas Kafizas^*, Susan Krumdieck

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

In this article, thin solid films are processed via pulsed-pressure metal organic chemical vapour deposition (PP-MOCVD) on FTO substrates over a range of processing times to produce a range of thicknesses and microstructures. The films are highly nanostructured anatase-rutile TiO₂ composite films with unique single crystal dendrites. After annealing, carbon was removed, and materials showed improved water splitting activity; with IPCEs above 80% in the UV, photocurrents of ∼1.2 mA cm⁻² at 1.23 V_RHE at 1 sun irradiance and an extension of photoactivity into the visible range. The annealed material exhibits minimal recombination losses and IPCEs amongst the highest reported in the literature; attributed to the formation of a high surface area nanostructured material and synergetic interactions between the anatase and rutile phases.

Original language	English
Pages (from-to)	904-911
Number of pages	8
Journal	Applied Catalysis B: Environmental
Volume	224
Early online date	16 Nov 2017
DOIs	https://doi.org/10.1016/j.apcatb.2017.11.033
Publication status	Published - May 2018

Keywords

Anatase-rutile heterojunctions
Nanostructured photoelectrodes
PP-MOCVD
Solar water splitting
Titanium dioxide (TiO)

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.apcatb.2017.11.033

Cite this

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title = "High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO2 heterojunctions by pulsed-pressure MOCVD",

abstract = "In this article, thin solid films are processed via pulsed-pressure metal organic chemical vapour deposition (PP-MOCVD) on FTO substrates over a range of processing times to produce a range of thicknesses and microstructures. The films are highly nanostructured anatase-rutile TiO2 composite films with unique single crystal dendrites. After annealing, carbon was removed, and materials showed improved water splitting activity; with IPCEs above 80% in the UV, photocurrents of ∼1.2 mA cm−2 at 1.23 VRHE at 1 sun irradiance and an extension of photoactivity into the visible range. The annealed material exhibits minimal recombination losses and IPCEs amongst the highest reported in the literature; attributed to the formation of a high surface area nanostructured material and synergetic interactions between the anatase and rutile phases.",

keywords = "Anatase-rutile heterojunctions, Nanostructured photoelectrodes, PP-MOCVD, Solar water splitting, Titanium dioxide (TiO)",

author = "Gardecka, {Aleksandra J.} and Catherine Bishop and Darryl Lee and Sacha Corby and Parkin, {Ivan P.} and Andreas Kafizas and Susan Krumdieck",

year = "2018",

month = may,

doi = "10.1016/j.apcatb.2017.11.033",

language = "English",

volume = "224",

pages = "904--911",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

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T1 - High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO2 heterojunctions by pulsed-pressure MOCVD

AU - Gardecka, Aleksandra J.

AU - Bishop, Catherine

AU - Lee, Darryl

AU - Corby, Sacha

AU - Parkin, Ivan P.

AU - Kafizas, Andreas

AU - Krumdieck, Susan

PY - 2018/5

Y1 - 2018/5

N2 - In this article, thin solid films are processed via pulsed-pressure metal organic chemical vapour deposition (PP-MOCVD) on FTO substrates over a range of processing times to produce a range of thicknesses and microstructures. The films are highly nanostructured anatase-rutile TiO2 composite films with unique single crystal dendrites. After annealing, carbon was removed, and materials showed improved water splitting activity; with IPCEs above 80% in the UV, photocurrents of ∼1.2 mA cm−2 at 1.23 VRHE at 1 sun irradiance and an extension of photoactivity into the visible range. The annealed material exhibits minimal recombination losses and IPCEs amongst the highest reported in the literature; attributed to the formation of a high surface area nanostructured material and synergetic interactions between the anatase and rutile phases.

AB - In this article, thin solid films are processed via pulsed-pressure metal organic chemical vapour deposition (PP-MOCVD) on FTO substrates over a range of processing times to produce a range of thicknesses and microstructures. The films are highly nanostructured anatase-rutile TiO2 composite films with unique single crystal dendrites. After annealing, carbon was removed, and materials showed improved water splitting activity; with IPCEs above 80% in the UV, photocurrents of ∼1.2 mA cm−2 at 1.23 VRHE at 1 sun irradiance and an extension of photoactivity into the visible range. The annealed material exhibits minimal recombination losses and IPCEs amongst the highest reported in the literature; attributed to the formation of a high surface area nanostructured material and synergetic interactions between the anatase and rutile phases.

KW - Anatase-rutile heterojunctions

KW - Nanostructured photoelectrodes

KW - PP-MOCVD

KW - Solar water splitting

KW - Titanium dioxide (TiO)

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U2 - 10.1016/j.apcatb.2017.11.033

DO - 10.1016/j.apcatb.2017.11.033

M3 - Article

AN - SCOPUS:85034623305

SN - 0926-3373

VL - 224

SP - 904

EP - 911

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO₂ heterojunctions by pulsed-pressure MOCVD

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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Susan Krumdieck

Cite this

High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO2 heterojunctions by pulsed-pressure MOCVD

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

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Susan Krumdieck

Cite this

High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO₂ heterojunctions by pulsed-pressure MOCVD