Enhancement of photochemical hydrogen evolution over Pt-loaded hierarchical titania photonic crystal

Liu, Jian; Liu, Guilin; Li, Mingzhu; Shen, Weizhi; Liu, Zhaoyue; Wang, Jingxia; Zhao, Jincai; Jiang, Lei; Song, Yanlin

doi:10.1039/c0ee00116c

Cited by 142 publications

(107 citation statements)

References 27 publications

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“…At Pt-modified TiO 2 PCs, 27 the photocatalytic efficiency of H 2 generation as a function of the stop band position obeyed the same trends as those observed for dye degradation reactions by Chen et al 20 The largest enhancement factor under broadband excitation of 2.5 occurred when the stop band was tuned to 342 nm-where the red edge overlapped the TiO 2 band edge. 27 While narrower bandgap alternatives to TiO 2 for photocatalytic water splitting 2-4 may absorb more visible light, none features 100% photon-to-carrier conversion efficiency, and thus all can still benefit from improved light utilization. Alternatives to TiO 2 also suffer from drawbacks involving other parts of the photocatalytic process, such as valence/conduction band energies that are inefficient for water-splitting chemistry, and from fast electron-hole recombination kinetics.…”

Section: Hydrogen Generation Photocatalysis At Photonic Crystalssupporting

confidence: 63%

Review of roles for photonic crystals in solar fuels photocatalysis

Pietron

DeSario

2016

J. Photon. Energy

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Abstract. We cover the intersection of nanophotonics, materials such as photonic crystals (PC), but also irregular templated light scattering interfaces, with their application to solar fuels photocatalysis. We describe the fundamental principles of adapting nanophotonics to photocatalysis, particularly slow photon effects and how appropriate choice of stop band and edge position of the PC can be exploited for light harvesting. We also review several representative examples of nanophotonic design applied to photocatalytic semiconductor materials. We include the most heavily investigated photocatalytic materials (such as TiO 2 ), as well as inherently visible light active semiconductors, and materials sensitized with semiconductor nanocrystals or plasmonic metal nanoparticles. Finally, we review alternative scattering interfaces useful for improving the performance of solar fuels photocatalysis.

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Section: Hydrogen Generation Photocatalysis At Photonic Crystalssupporting

confidence: 63%

Review of roles for photonic crystals in solar fuels photocatalysis

Pietron

DeSario

2016

J. Photon. Energy

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“…Chemically modified nanostructures offer a green and low cost method of generating H 2 fuel via PEC water splitting. 40 Liu et al 41 demonstrated that Pt-loaded titania hierarchical photonic crystals could double the evolution of H 2 in photocatalytic water splitting. The enhancement in H 2 evolution was a result of the hierarchical structure, which can cause multiple scattering among the photonic crystals and improve the absorbance of light.…”

Section: Introductionmentioning

confidence: 99%

“…The structural conversion of TiO 2 NPs to NSs showed their high catalytic activity for H 2 generation and the removal of environmental pollution. 227 Pt-loaded TiO 2 hierarchical photonic crystals 41 have shown a doubling of efficiency. The rate of hydrogen production was 247 mmol h À1 and the QY was about 11.9%.…”

mentioning

confidence: 99%

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Babu

Vempati

Uyar

et al. 2015

Phys. Chem. Chem. Phys.

152

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Hydrogen is an attractive alternative to fossil fuels in terms of environmental and other advantages. Of the various production methods for H 2 , photocatalysis requires further development so that it can be applied economically on an industrial scale. One-and two-dimensional nanostructures in both pristine and modified forms have shown great potential as catalysts in the generation of H 2 . We review here recent developments in these nanostructure catalysts and their efficiency in the generation of H 2 under UV/visible/simulated solar light. Despite much research effort, many photocatalysts do not yet meet the practical requirements for the generation of H 2 , such as visible light activity. H 2 production is dependent on a variety of parameters and factors. To meet future energy demands, several challenges in H 2 production still need to be solved. We address here the factors that influence the efficiency of H 2 production and suggest alternatives. The nanostructures are classified based on their morphology and their efficiency is considered with respect to the influencing parameters. We suggest effective ways of engineering catalyst combinations to overcome the current performance barriers.

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“…Liu et al 235 employed a series of TiO 2 PC films modified with Pt nanoparticles with stop bands ranging from 307 to 434 nm in photocatalytic hydrogen generation experiments and observed enhancement of photocatalytic activity relative to Pt∕TiO 2 control materials that were not incorporated into PC structures. The largest enhancement factors (EFs) under white light illumination occurred for PC films with stop bands of 307 nm (EF ¼ 2.4) and 342 nm (EF ¼ 2.5).…”

Section: Hydrogen Generation By Photocatalysis At Tio 2 Photonic Crysmentioning

confidence: 99%

The role of photonics in energy

et al. 2015

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Abstract. In celebration of the 2015 International Year of Light, we highlight major breakthroughs in photonics for energy conversion and conservation. The section on energy conversion discusses the role of light in solar light harvesting for electrical and thermal power generation; chemical energy conversion and fuel generation; as well as photonic sensors for energy applications. The section on energy conservation focuses on solid-state lighting, flat-panel displays, and optical communications and interconnects.

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Enhancement of photochemical hydrogen evolution over Pt-loaded hierarchical titania photonic crystal

Cited by 142 publications

References 27 publications

Review of roles for photonic crystals in solar fuels photocatalysis

Review of roles for photonic crystals in solar fuels photocatalysis

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

The role of photonics in energy

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