Janus Au‐TiO<sub>2</sub> Photocatalysts with Strong Localization of Plasmonic Near‐Fields for Efficient Visible‐Light Hydrogen Generation

Seh, Zhi Wei; Liu, Shuhua; Low, Michelle; Zhang, Shuang‐Yuan; Liu, Zhaolin; Mlayah, Adnen; Han, Ming‐Yong

doi:10.1002/adma.201104241

Cited by 806 publications

(621 citation statements)

References 52 publications

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“…At 0.5 h, the UV-vis spectrum exhibits a strong visible light absorption at 520 nm, indicating the formation of Au nanocrystals. 43 When the reaction time increased to 1 h, the absorption peak at 520 nm increased accordingly, indicating the growth of Au nanocrystals. At 2 h, the absorption peak of Au became weaker as a result of the deposition of Rh on the surfaces of the Au nanocrystals.…”

Section: Bimetallic Aurh Nanodendrites Y Kang Et Almentioning

confidence: 97%

Bimetallic AuRh nanodendrites consisting of Au icosahedron cores and atomically ultrathin Rh nanoplate shells: synthesis and light-enhanced catalytic activity

et al. 2017

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Precise control of the morphology, composition and structure of metal nanostructures not only effectively improves their catalytic activity and durability but also enhances their range of applications. In this work, bimetallic Au@Rh core-shell nanodendrites are synthesized by a facile one-pot hydrothermal method. Physical characterizations show that the dendritic Rh consists of two-dimensional (2D) ultrathin Rh nanoplates with a thickness of approximately 1.2 nm. For the first time, Au@Rh core-shell nanostructures are used as a catalyst for the hydrogen generation reaction from aqueous hydrazine solution (N 2 H 4 = N 2 +2H 2 , HGR-N 2 H 4 ). Bimetallic Au@Rh core-shell nanodendrites exhibit improved catalytic activity and durability for the HGR-N 2 H 4 compared with commercial Rh nanocrystals, which can be attributed to the atomically ultrathin structure of 2D Rh nanoplates and the interconnected structure of nanodendrites, respectively. Under light irradiation, bimetallic Au@Rh core-shell nanodendrites show light-enhanced catalytic activity for the HGR-N 2 H 4 , originating from the distinctive localized surface plasmon resonance of Au icosahedron cores.

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Section: Bimetallic Aurh Nanodendrites Y Kang Et Almentioning

confidence: 97%

Bimetallic AuRh nanodendrites consisting of Au icosahedron cores and atomically ultrathin Rh nanoplate shells: synthesis and light-enhanced catalytic activity

et al. 2017

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“…Seh et al also reported the enhanced photocatalytic activity via the strong localization of plasmonic near fields in Janus Au/TiO 2 nanostructures with uniform size of Au nanoparticles ranging from 30 to 70 nm, which were found to outperform those using 5 nm Au nanoparticles with a 4–7 fold increase in hydrogen generation under visible light irradiation 45. The disparity in photocatalytic activity is attributed to the stronger plasmonic near‐field enhancements and optical absorption enhancements of the larger Au nanoparticles in greater contact with TiO 2 nanoparticles ( Figure 6 ).…”

Section: Photocatalytic Water Splittingmentioning

confidence: 98%

Recent Progress in Energy‐Driven Water Splitting

et al. 2017

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Hydrogen is readily obtained from renewable and non‐renewable resources via water splitting by using thermal, electrical, photonic and biochemical energy. The major hydrogen production is generated from thermal energy through steam reforming/gasification of fossil fuel. As the commonly used non‐renewable resources will be depleted in the long run, there is great demand to utilize renewable energy resources for hydrogen production. Most of the renewable resources may be used to produce electricity for driving water splitting while challenges remain to improve cost‐effectiveness. As the most abundant energy resource, the direct conversion of solar energy to hydrogen is considered the most sustainable energy production method without causing pollutions to the environment. In overall, this review briefly summarizes thermolytic, electrolytic, photolytic and biolytic water splitting. It highlights photonic and electrical driven water splitting together with photovoltaic‐integrated solar‐driven water electrolysis.

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“…Ongoing research aims for efficient low-temperature catalysis at ambient conditions, to reduce unwanted side reactions and prolong catalyst lifetime. Plasmon-induced catalysis promises to achieve these goals: in recent years, research groups have demonstrated, e.g., plasmon-driven H 2 production from alcohol [2,3], liquid-phase water splitting [4][5][6], gas-phase oxidation reactions [7,8], and hydrocarbon conversion [9]. In particular, noble-metal nanoparticles comprise an excellent source of hot electrons [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Electron-Transfer-Induced Dissociation of H₂on Gold Nanoparticles: Excited-State Potential Energy SurfacesviaEmbedded Correlated Wavefunction Theory

Libisch

Cheng

Carter

2013

Zeitschrift für Physikalische Chemie

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Plasmons / Photocatalysis / Potential Energy SurfacesNoble metal surfaces play a central role in heterogeneous catalysis. Lasers of the appropriate resonance frequency efficiently generate surface plasmons. These, in turn, may generate hot electrons, which can drive catalytic reactions at low temperatures. In this work, we demonstrate how embedding methods allow for the use of accurate ab-initio correlated wavefunction methods to describe excited-state potential energy surfaces of molecule-surface interactions. As model system, we consider the hot-electron-induced dissociation of hydrogen on Au(111), which has recently been demonstrated experimentally. We discuss merits and limitations of several different correlated wavefunction schemes. Our results show that dissociation barriers may be substantially reduced upon electron excitation and suggest a method to calculate the hot electron energies required for catalytic reactions.

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Janus Au‐TiO₂ Photocatalysts with Strong Localization of Plasmonic Near‐Fields for Efficient Visible‐Light Hydrogen Generation

Cited by 806 publications

References 52 publications

Bimetallic AuRh nanodendrites consisting of Au icosahedron cores and atomically ultrathin Rh nanoplate shells: synthesis and light-enhanced catalytic activity

Bimetallic AuRh nanodendrites consisting of Au icosahedron cores and atomically ultrathin Rh nanoplate shells: synthesis and light-enhanced catalytic activity

Recent Progress in Energy‐Driven Water Splitting

Electron-Transfer-Induced Dissociation of H₂on Gold Nanoparticles: Excited-State Potential Energy SurfacesviaEmbedded Correlated Wavefunction Theory

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Janus Au‐TiO2 Photocatalysts with Strong Localization of Plasmonic Near‐Fields for Efficient Visible‐Light Hydrogen Generation

Cited by 806 publications

References 52 publications

Bimetallic AuRh nanodendrites consisting of Au icosahedron cores and atomically ultrathin Rh nanoplate shells: synthesis and light-enhanced catalytic activity

Bimetallic AuRh nanodendrites consisting of Au icosahedron cores and atomically ultrathin Rh nanoplate shells: synthesis and light-enhanced catalytic activity

Recent Progress in Energy‐Driven Water Splitting

Electron-Transfer-Induced Dissociation of H2on Gold Nanoparticles: Excited-State Potential Energy SurfacesviaEmbedded Correlated Wavefunction Theory

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Janus Au‐TiO₂ Photocatalysts with Strong Localization of Plasmonic Near‐Fields for Efficient Visible‐Light Hydrogen Generation

Electron-Transfer-Induced Dissociation of H₂on Gold Nanoparticles: Excited-State Potential Energy SurfacesviaEmbedded Correlated Wavefunction Theory