Photocatalytic Activity of Ag/TiO2 Nanotube Arrays Enhanced by Surface Plasmon Resonance and Application in Hydrogen Evolution by Water Splitting

Wu, Feng; Hu, Xiaoyun; Fan, Jun; Liu, Enzhou; Sun, Tao; Li, Kang; Hou, Wenqian; Zhu, Changjun; Liu, Hanchen

doi:10.1007/s11468-012-9418-5

Cited by 155 publications

(78 citation statements)

References 33 publications

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“…For instance, increased photoefficiencies have been recorded when noble metal nanoparticles with a wide work function (φ m , generally larger than 5.0 eV), such as Ag [25,26], Au [27], Cu [28,29], Pt [30][31][32] and Pd [33], are deposited on the TiO 2 surface. In the cases of Cu, Pt and Pd, such a result has been associated with a minor electrons/holes recombination due to the creation of Schottky barriers at the metal/TiO 2 interface [34] (Figure 4).…”

Section: Metal-semiconductor Heterojunctionsmentioning

confidence: 99%

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

et al. 2017

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Photocatalytic water splitting and organic reforming based on nano-sized composites are gaining increasing interest due to the possibility of generating hydrogen by employing solar energy with low environmental impact. Although great efforts in developing materials ensuring high specific photoactivity have been recently recorded in the literature survey, the solar-to-hydrogen energy conversion efficiencies are currently still far from meeting the minimum requirements for real solar applications. This review aims at reporting the most significant results recently collected in the field of hydrogen generation through photocatalytic water splitting and organic reforming, with specific focus on metal-based semiconductor nanomaterials (e.g., metal oxides, metal (oxy)nitrides and metal (oxy)sulfides) used as photocatalysts under UVA or visible light irradiation. Recent developments for improving the photoefficiency for hydrogen generation of most used metal-based composites are pointed out. The main synthesis and operating variables affecting photocatalytic water splitting and organic reforming over metal-based nanocomposites are critically evaluated.

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Section: Metal-semiconductor Heterojunctionsmentioning

confidence: 99%

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

et al. 2017

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“…The mismatch between the Au NP SPR band and the semiconductor absorption was evoked to explain the small catalytic improvement while a large absorption spectrum overlap exits between Ag nanocubes and TiO 2 , featuring a higher catalytic activity. Further to these discoveries, researchers explored the morphology of the semiconductor for this reaction and deposited Ag NPs onto TiO 2 nanotubes [66] and TiO 2 nanosheets [67] to afford catalysis enhancement of 3.3 and 8.5, respectively, compared to the corresponding bare TiO 2 materials. Finally the group of Lai designed TiO 2 nanotube arrays, organized in a parallel fashion and vertically on a substrate, using an electrochemical anodization technique [68].…”

Section: Silver Nanostructures On Titanium Dioxidementioning

confidence: 99%

Water splitting catalyzed by titanium dioxide decorated with plasmonic nanoparticles

Gellé

Moores

2017

Pure and Applied Chemistry

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Abstract:The development of active, cheap, efficient and visible-light-driven water splitting catalysts is currently the center of intense research efforts. Amongst the most promising avenues, the design of titania and plasmonic nanoparticle hybrids is particularly appealing. Titania has been known for long to be an active photocatalyst, able to perform water splitting under light irradiation. However, this activity is limited to the ultraviolet spectrum and suffers from too rapid charge carrier recombination. The addition of plasmonic nanostructures enables to push absorption properties to the visible region and prevent unwanted charge recombination. In this review, we explain the principles behind the activity of such nanohybrids towards visible light water splitting and detail the recent research developments relying on plasmonic metals, namely Au, Ag and Cu.

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“…The metal also plays a role as an active site for water reduction. Pd [13], Pt [14,15], Ag [16], Au [17], Cu [18] have been reported to be active metals for water splitting when used in conjunction with a semiconductor and a hole scavenger. Studies reported by Li et al on Au encapsulated with TiO 2 , highlighted that the Au role is to promote hydrogen association to leave metal surface by the reduction of protons on the TiO 2 surface [19].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

Kennedy

Bahruji

Bowker

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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A B S T R A C TWe have studied hydrogen gas production using photocatalysis from C2-C5 carbon chain polyols, cyclic alcohols and mono and di-saccharides using palladium nanoparticles supported on a TiO 2 catalyst. For many of the polyols the hydrogen evolution rate is found to be dictated by the number of hydroxyl groups and available a-hydrogens in the structure. However the rule only applies to polyols and cyclic alcohols, while the sugar activity is limited by the bulky structure of those molecules. There was also evidence of ring opening in photocatalytic reforming of cyclic alcohols that involved dehydrogenation and decarbonylation of a CÀ ÀC bond.

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Photocatalytic Activity of Ag/TiO2 Nanotube Arrays Enhanced by Surface Plasmon Resonance and Application in Hydrogen Evolution by Water Splitting

Cited by 155 publications

References 33 publications

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

Water splitting catalyzed by titanium dioxide decorated with plasmonic nanoparticles

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

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