Pt-Doped α-Fe<sub>2</sub>O<sub>3</sub> Thin Films Active for Photoelectrochemical Water Splitting

Hu, Yong‐Sheng; Kleiman‐Shwarsctein, Alan; Forman, Arnold J.; Hazen, Daniel Sanchez; Park, Jung‐Nam; McFarland, Eric W.

doi:10.1021/cm800144q

Cited by 508 publications

(389 citation statements)

References 43 publications

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“…Often, these will exploit support-metal-supportinteraction (SMSI) modification of photo-catalytic properties [2]. Although TiO 2 is one of the most studied metal oxides in the literature, α-Fe 2 O 3 has come to be of equal, if not more, interest in recent years, due to its relative ubiquity and low cost, with a seemingly ideal bad gap [3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Photo-active and dynamical properties of hematite (Fe2O3)–water interfaces: an experimental and theoretical study

English

Rahman

Wadnerkar

et al. 2014

Phys. Chem. Chem. Phys.

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The dynamical properties of physically and chemically adsorbed water molecules at pristine hematite-(001) surfaces have been studied by means of equilibrium Born-Oppenheimer molecular dynamics (BOMD) in the NVT ensemble at 298 K. The dissociation of water molecules to form chemically adsorbed species was scrutinised, in addition to 'hopping' or swapping events of protons between water molecules. Particular foci have been dynamical properties of the adsorbed water molecules and OH -and H 3 O + ions, the hydrogen bonds between protons in water molecules and the bridging oxygen atoms at the hematite surface, as well as the interactions between oxygen atoms in adsorbed water molecules and iron atoms at the hematite surface. Experimental results for photoelectrical current generation complement simulation findings of water dissociation.

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Section: Introductionmentioning

confidence: 99%

Photo-active and dynamical properties of hematite (Fe2O3)–water interfaces: an experimental and theoretical study

English

Rahman

Wadnerkar

et al. 2014

Phys. Chem. Chem. Phys.

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“…[67][68][69] The reports suggested various mechanisms underlying the enhanced PEC efficiency of the α-Fe 2 O 3 photoanodes by cation doping. Glasscock et al reported Si-or Ti-doped α-Fe 2 O 3 films prepared using magnetron sputtering and their significantly higher PEC activities than the undoped material.…”

confidence: 99%

Research Update: Strategies for efficient photoelectrochemical water splitting using metal oxide photoanodes

Cho¹,

Jang²,

Lee³

et al. 2014

APL Materials

124

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Photoelectrochemical (PEC) water splitting to hydrogen is an attractive method for capturing and storing the solar energy in the form of chemical energy. Metal oxides are promising photoanode materials due to their low-cost synthetic routes and higher stability than other semiconductors. In this paper, we provide an overview of recent efforts to improve PEC efficiencies via applying a variety of fabrication strategies to metal oxide photoanodes including (i) size and morphology-control, (ii) metal oxide heterostructuring, (iii) dopant incorporation, (iv) attachments of quantum dots as sensitizer, (v) attachments of plasmonic metal nanoparticles, and (vi) co-catalyst coupling. Each strategy highlights the underlying principles and mechanisms for the performance enhancements.

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“…The doping of impurities may affect the properties of synthesised material in many subtle ways, such as, inter alia, structure, nano-morphology, electron conductivity [2]. It has been demonstrated that incorporation of 3d transition metals into α-Fe 2 O 3 increases conductivity significantly [2][3][4][5][6][7][8][9][10]. On the other hand, the nano-structured morphology of hematite thin films with features comparable in size to, or less than, holediffusion lengths have been found to reduce significantly carrier-recombination [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Success towards the realisation of α-Fe 2 O 3 as a practical photoelectrochemical material has been somewhat mixed [2][3][4][5][6][7][8][9], but achieving greater photo-currents has been a necessary and very promising first step towards making hematite's widespread usage a viable proposition in commercial solar water-splitting applications.…”

Section: Introductionmentioning

confidence: 99%

The influence of Ti- and Si-doping on the structure, morphology and photo-response properties of α-Fe2O3 for efficient water-splitting: Insights from experiment and first-principles calculations

Rahman

Wadnerkar

English

et al. 2014

Chemical Physics Letters

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Publication informationChemical Physics Letters, 592 (30 January 2014): 242-246Publisher ElsevierItem record/more information http://hdl.handle.net/10197/5226Publisher's statement þÿ T h i s i s t h e a u t h o r s v e r s i o n o f a w o r k t h a t w a s a c c e p t e d f o r p u b l i c a t i o n i n C h e m i c a l shrinks the volume more than Ti-doping; it is conjectured that this affects hopping probability of localised charge-carriers more and leads to enhanced photocurrent activity for Si-doping, supported by experiment.

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Pt-Doped α-Fe₂O₃ Thin Films Active for Photoelectrochemical Water Splitting

Cited by 508 publications

References 43 publications

Photo-active and dynamical properties of hematite (Fe2O3)–water interfaces: an experimental and theoretical study

Photo-active and dynamical properties of hematite (Fe2O3)–water interfaces: an experimental and theoretical study

Research Update: Strategies for efficient photoelectrochemical water splitting using metal oxide photoanodes

The influence of Ti- and Si-doping on the structure, morphology and photo-response properties of α-Fe2O3 for efficient water-splitting: Insights from experiment and first-principles calculations

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Pt-Doped α-Fe2O3 Thin Films Active for Photoelectrochemical Water Splitting

Cited by 508 publications

References 43 publications

Photo-active and dynamical properties of hematite (Fe2O3)–water interfaces: an experimental and theoretical study

Photo-active and dynamical properties of hematite (Fe2O3)–water interfaces: an experimental and theoretical study

Research Update: Strategies for efficient photoelectrochemical water splitting using metal oxide photoanodes

The influence of Ti- and Si-doping on the structure, morphology and photo-response properties of α-Fe2O3 for efficient water-splitting: Insights from experiment and first-principles calculations

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Product

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Pt-Doped α-Fe₂O₃ Thin Films Active for Photoelectrochemical Water Splitting