Efficient photochemical hydrogen production under visible-light over artificial photosynthetic systems

Chen, Jianjun; Su, Huilan; Liu, Yujia; Zeng, Yunhong; Zhang, Wang; Gu, Jiajun; Lau, Woon Ming; Zhang, Di

doi:10.1016/j.ijhydene.2013.05.045

Cited by 9 publications

(8 citation statements)

References 40 publications

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“…The zeolites help to prevent aggregation of the nanoparticles and stabilize the structure, and provide access for the solution species to the zeolite‐bound particles . An additional study validates the use of Pt/CdS/TiO 2 composites within a hierarchically reticular structure, as H 2 is generated at a rate of approximately 118 μmol h −1 on this catalyst . Notably, the location of Pt on the catalyst is a critical factor affecting the efficiency, as the rate increases by a factor of 3–30 for CdS/(Pt‐TiO 2 ) relative to that for Pt‐(CdS)/TiO 2 (Figure 4 a) …”

Section: Principle Materials and Performance Of Two‐photon Structuresmentioning

confidence: 66%

Charge Transport in Two‐Photon Semiconducting Structures for Solar Fuels

Haussener

2016

ChemSusChem

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Semiconducting heterostructures are emerging as promising light absorbers and offer effective electron–hole separation to drive solar chemistry. This technology relies on semiconductor composites or photoelectrodes that work in the presence of a redox mediator and that create cascade junctions to promote surface catalytic reactions. Rational tuning of their structures and compositions is crucial to fully exploit their functionality. In this review, we describe the possibilities of applying the two‐photon concept to the field of solar fuels. A wide range of strategies including the indirect combination of two semiconductors by a redox couple, direct coupling of two semiconductors, multicomponent structures with a conductive mediator, related photoelectrodes, as well as two‐photon cells are discussed for light energy harvesting and charge transport. Examples of charge extraction models from the literature are summarized to understand the mechanism of interfacial carrier dynamics and to rationalize experimental observations. We focus on a working principle of the constituent components and linking the photosynthetic activity with the proposed models. This work gives a new perspective on artificial photosynthesis by taking simultaneous advantages of photon absorption and charge transfer, outlining an encouraging roadmap towards solar fuels.

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Section: Principle Materials and Performance Of Two‐photon Structuresmentioning

confidence: 66%

Charge Transport in Two‐Photon Semiconducting Structures for Solar Fuels

Haussener

2016

ChemSusChem

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“…Concurrently, the light escaping from the macroporous frame is also reflected by other porous networks. The cyclic scattering and reflection enhances the light-harvesting ability …”

Section: Resultsmentioning

confidence: 99%

Sulfate-Anchored Hierarchical Meso–Macroporous N-doped TiO₂: A Novel Photocatalyst for Visible Light H₂ Evolution

Pany

Parida

2014

ACS Sustainable Chem. Eng.

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Visible light-active hierarchical meso−macroporous S,N-modified TiO 2 has been synthesized through a precipitation and deposition method and characterized by X-ray diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, BET surface area, X-ray photo electron spectroscopy, and photoluminescence studies. The finding demonstrates that N exists in the form of N−Ti−O in the crystal lattice of TiO 2 ; however, sulfate (S 6+ ) is bidentately coordinated on the surface of TiO 2 . The existence of sulfate maintains the morphology as well as enhances the surface area, decreases the crystallite size, shifts the optical absorption toward the red end, acts as co-catalyst, and facilitates the photogenerated charge carriers. Moreover, the presence of a hierarchical meso−macroporous frame enhances visible light-harvesting properties as well as favors easy channelization of electrons, which effectively reduces the charge recombination. The photocatalytic activity has been evaluated through H 2 evolution. The observed enhancement in activity for 4SNTP-400 has been explained on the basis of a synergistic combination of anionic−cationic species, hierarchical meso−macroporous frames with high surface area, and high crystallization of anatase phase with small crystallite size and low PL intensity, which makes the system more potential toward visible light activity.

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“…14,15 Fortunately, nature might offer some inspiration for creating functional structures and components for desired properties. 20,21 Especially for Euploea mulciber butterfly wings, their well-organized hierarchical architecture should have an advantage of gas sensing applications. In previous research, some biomatters such as eggshell membranes, 16 pollen grains, 17 diatoms, 18 and butterfly wings 19 were introduced as templates to synthesize various sulfides, oxides, and metal nanomaterials with special hierarchical architectures for related valuable properties.…”

Section: Introductionmentioning

confidence: 99%

“…By introducing butterfly wings as biotemplate, nanocomposites like CdS/Pt-TiO 2 and Au-TiO 2 have been synthesized, respectively, with reticular hierarchical structure inheriting from the wings. 20,21 Especially for Euploea mulciber butterfly wings, their well-organized hierarchical architecture should have an advantage of gas sensing applications. The parallel main ridges and short vertical struts construct the 3-D open macroporous net-skeleton architecture, which promotes convenient gas flow.…”

Section: Introductionmentioning

confidence: 99%

A Facile Synthesis of PdO‐Decorated SnO₂ Nanocomposites with Open Porous Hierarchical Architectures for Gas Sensors

Zhu

Chen

et al. 2016

J. Am. Ceram. Soc.

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PdO‐decorated SnO2 nanocomposites with open porous hierarchical architectures are fabricated through a facile biotemplating sol–gel technique. The sol–gel soakage process is carried out by immersing the templates butterfly wings in Sn‐ and Pd‐ impregnants successively to generate a uniform colloid layer. PdO and SnO2 nanocrystallites come into being with subsequent calcination treatment, and PdO‐decorated SnO2 nanocomposites further construct the parallel main ridges with connective pillars and vertical struts, finally present a 3‐D open porous hierarchical architecture. Benefiting from unique ingredients and structure hierarchy, the nanocomposites give enhanced acetone‐sensing performance of high sensitivity and rapid response/recovery rate

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Efficient photochemical hydrogen production under visible-light over artificial photosynthetic systems

Cited by 9 publications

References 40 publications

Charge Transport in Two‐Photon Semiconducting Structures for Solar Fuels

Charge Transport in Two‐Photon Semiconducting Structures for Solar Fuels

Sulfate-Anchored Hierarchical Meso–Macroporous N-doped TiO₂: A Novel Photocatalyst for Visible Light H₂ Evolution

A Facile Synthesis of PdO‐Decorated SnO₂ Nanocomposites with Open Porous Hierarchical Architectures for Gas Sensors

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Efficient photochemical hydrogen production under visible-light over artificial photosynthetic systems

Cited by 9 publications

References 40 publications

Charge Transport in Two‐Photon Semiconducting Structures for Solar Fuels

Charge Transport in Two‐Photon Semiconducting Structures for Solar Fuels

Sulfate-Anchored Hierarchical Meso–Macroporous N-doped TiO2: A Novel Photocatalyst for Visible Light H2 Evolution

A Facile Synthesis of PdO‐Decorated SnO2 Nanocomposites with Open Porous Hierarchical Architectures for Gas Sensors

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Product

Resources

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Sulfate-Anchored Hierarchical Meso–Macroporous N-doped TiO₂: A Novel Photocatalyst for Visible Light H₂ Evolution

A Facile Synthesis of PdO‐Decorated SnO₂ Nanocomposites with Open Porous Hierarchical Architectures for Gas Sensors