Preparation and Characterization of Anodized Pt-TiO2 Nanotube Arrays for Water Splitting

Nam, Wooseok; Han, Gui Young

doi:10.1252/jcej.40.266

Cited by 29 publications

(22 citation statements)

References 12 publications

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“…The Ti foil was anodized at 15 • C and 20 V for 3 h and then annealed for a further 6 h at a temperature of either 400, 500 or 600 • C. The as-anodized titania nanotubes are amorphous and are subsequently crystallized by the high-temperature annealing. In the present work [19], the anatase phase started to appear at a temperature of 300 • C. A weak rutile phase peak appeared in the X-ray diffraction pattern at a temperature near 450 • C. The XRD patterns of the TiO 2 nanotube arrays annealed at different temperatures in O 2 gas are shown in Fig. 6.…”

Section: Resultssupporting

confidence: 54%

Design of TiO2 nanotube array-based water-splitting reactor for hydrogen generation

Kim

Park

Han

2008

Journal of Power Sources

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Section: Resultssupporting

confidence: 54%

Design of TiO2 nanotube array-based water-splitting reactor for hydrogen generation

Kim

Park

Han

2008

Journal of Power Sources

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“…Although PVD in general only works well for the deposition of catalysts on flat semiconductor photoelectrodes, attempts were also made to deposit catalysts on high‐aspect‐ratio light absorbers. For example, Pt NPs had been deposited on anodized TiO 2 nanotube (NT) arrays using DC magnetron sputtering, which demonstrated orders of magnitude improvement in PEC H 2 evolution rate, compared to bare TiO 2 NT arrays. Pt loading was found to affect the PEC performance, and a longer deposition time resulted in a decrease in H 2 production rate which was ascribed to the blocking of photoactive TiO 2 surface .…”

Section: Strategies For Semiconductor/electrocatalyst Couplingmentioning

confidence: 99%

Strategies for Semiconductor/Electrocatalyst Coupling toward Solar‐Driven Water Splitting

et al. 2020

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Hydrogen (H2) has a significant potential to enable the global energy transition from the current fossil‐dominant system to a clean, sustainable, and low‐carbon energy system. While presently global H2 production is predominated by fossil‐fuel feedstocks, for future widespread utilization it is of paramount importance to produce H2 in a decarbonized manner. To this end, photoelectrochemical (PEC) water splitting has been proposed to be a highly desirable approach with minimal negative impact on the environment. Both semiconductor light‐absorbers and hydrogen/oxygen evolution reaction (HER/OER) catalysts are essential components of an efficient PEC cell. It is well documented that loading electrocatalysts on semiconductor photoelectrodes plays significant roles in accelerating the HER/OER kinetics, suppressing surface recombination, reducing overpotentials needed to accomplish HER/OER, and extending the operational lifetime of semiconductors. Herein, how electrocatalyst coupling influences the PEC performance of semiconductor photoelectrodes is outlined. The focus is then placed on the major strategies developed so far for semiconductor/electrocatalyst coupling, including a variety of dry processes and wet chemical approaches. This Review provides a comprehensive account of advanced methodologies adopted for semiconductor/electrocatalyst coupling and can serve as a guideline for the design of efficient and stable semiconductor photoelectrodes for use in water splitting.

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“…Deposition of noble metal nanoparticles, and particularly platinum, may play a beneficial effect on the efficiency of a photocatalytic process, [50][51][52] due to the occurrence of at least two different effects. On one hand, particularly for gas evolution and especially for H 2 evolution, it has been found that the presence of a noble metal with the role of a hydrogenation catalyst facilitates kinetics of H 2 gas formation from H 2 O.…”

Section: Doping Of Titaniamentioning

confidence: 99%

Photocatalytic CO2 reduction by TiO2 and related titanium containing solids

Dhakshinamoorthy

Navalón

Corma

et al. 2012

Energy Environ. Sci.

521

324

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The shortage of fossil fuels and the need to find alternative renewable and sustainable fuels for transportation are triggering an increasing interest in the photocatalytic reduction of CO 2 . In this review, we have focused on titanium containing photocatalysts that effect the reduction of CO 2 to fuels. The various products that are more generally formed are CH 4 , CH 3 OH, CO as well as HCOOH. This review has been organized primarily depending on the type of titanium material used as the photocatalyst. The list includes pure TiO 2 as well as metal-and non metal-doped titania, noble metals supported on titania and micro-/mesoporous titanosilicates or porous matrices containing titania clusters. In a general introduction we comment on the limitations of the current approaches and the various possibilities and conditions for performing the irradiation. In a final section, we also give our view on future developments and open issues to be addressed in this field.

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Preparation and Characterization of Anodized Pt-TiO2 Nanotube Arrays for Water Splitting

Cited by 29 publications

References 12 publications

Design of TiO2 nanotube array-based water-splitting reactor for hydrogen generation

Design of TiO2 nanotube array-based water-splitting reactor for hydrogen generation

Strategies for Semiconductor/Electrocatalyst Coupling toward Solar‐Driven Water Splitting

Photocatalytic CO2 reduction by TiO2 and related titanium containing solids

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