Surface Plasmon-Driven Water Reduction: Gold Nanoparticle Size Matters

Qian, Kun; Sweeny, Brendan C.; Johnston‐Peck, Aaron C.; Niu, Wenxin; Graham, Jeremy O.; DuChene, Joseph S.; Qiu, Jingjing; Wang, Yi‐Chung; Engelhard, Mark H.; Su, Dong; Stach, Eric A.; Wei, Wei David

doi:10.1021/ja504097v

Cited by 319 publications

(302 citation statements)

References 46 publications

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“…Qian et al fabricated Au-TiO 2 heterostructures with AuNPs of different sizes, applying deposition-precipitation and photodeposition methods to commercial P25 TiO 2 . [45] The authors compared the hot electron conversion efficiency of 4.4 nm AuNPs with that of 67 nm AuNPs under λ > 435 nm illumination. Both 4.4 nm and 67 nm AuNPs could induce photodeposition of Pt nanoparticles on TiO 2 under illumination.…”

Section: Wwwadvopticalmatdementioning

confidence: 99%

“…Recently, TiO 2 -decorated plasmonic metal nanoparticles, such as AuNPs/TiO 2 , AuNRs/TiO 2 , and Au/TiO 2 Janus nanohybrids have been synthesized for photocatalytic water splitting. [45,48,56] In addition to TiO 2 , various semiconductors have also been used to prepare efficient photocatalytic systems. Primo et al synthesized a heterogeneous photocatalyst based on gold www.advopticalmat.de supported on nanoparticulate ceria (Au/CeO 2 ) for the generation of oxygen from water, [124] which exhibited a high photocatalytic activity for the solar water-splitting under visible light.…”

Section: Water Splittingmentioning

confidence: 99%

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Hot‐Electron‐Mediated Photochemical Reactions: Principles, Recent Advances, and Challenges

Kim

Lin

Son

et al. 2017

Advanced Optical Materials

167

116

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Hot electron chemistry has drawn tremendous attention from applications related to materials, energy, sensing, and catalysis. The plasmon‐induced generation of hot electrons and their transfer behavior are very important for understanding plasmonic‐enhanced applications and for achieving practically useful efficiency. From a plasmonic perspective, well‐designed plasmonic structures that can manipulate surface plasmons are able to enhance the efficiencies of hot electron‐based processes. This progress report summarizes the recent experimental and theoretical advances on the hot electron effect, emphasizing the crucial role of surface plasmons that are highly designable by using metal nanostructures. In particular, recent breakthroughs in the emerging fields of heterogeneous catalysis based on the hot electron effect are highlighted. Important design principles, mechanisms, and concepts, as well as challenges and perspectives, are illustrated and discussed.

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Section: Wwwadvopticalmatdementioning

confidence: 99%

Section: Water Splittingmentioning

confidence: 99%

Hot‐Electron‐Mediated Photochemical Reactions: Principles, Recent Advances, and Challenges

Kim

Lin

Son

et al. 2017

Advanced Optical Materials

167

116

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“…al. 36 found that small plasmonic Au particles cannot inject a sufficient number of hot electrons into the conduction band of TiO2 to raise the energy level sufficiently to drive the hydrogen evolution reaction (HER). DuChene et.…”

Section: Introductionmentioning

confidence: 99%

Direct Plasmon-Driven Photoelectrocatalysis

et al. 2015

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Harnessing the energy from hot charge carriers is an emerging research area with the potential to improve energy conversion technologies. − Here we present a novel plasmonic photoelectrode architecture carefully designed to drive photocatalytic reactions by efficient, nonradiative plasmon decay into hot carriers. In contrast to past work, our architecture does not utilize a Schottky junction, the commonly used building block to collect hot carriers. Instead, we observed large photocurrents from a Schottky-free junction due to direct hot electron injection from plasmonic gold nanoparticles into the reactant species upon plasmon decay. The key ingredients of our approach are (i) an architecture for increased light absorption inspired by optical impedance matching concepts, (ii) carrier separation by a selective transport layer, and (iii) efficient hot-carrier generation and injection from small plasmonic Au nanoparticles to adsorbed water molecules. We also investigated the quantum efficiency of hot electron injection for different particle diameters to elucidate potential quantum effects while keeping the plasmon resonance frequency unchanged. Interestingly, our studies did not reveal differences in the hot-electron generation and injection efficiencies for the investigated particle dimensions and plasmon resonances.

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“…The frequency of the surface plasmon absorption is highly dependent on the type of metal, size, shape, surrounding dielectric medium, distance between neighboring objects, and configuration their ensemble [101]. A wide range of metal/semiconductor heterostructures, including Au/TiO 2 , Ag/TiO 2 , Au/CdS, and Au/Fe 2 O 3 , have been explored to achieve enhanced photocatalytic activity [102][103][104][105][106][107][108][109][110].…”

Section: The Plasmonic Metal Case: Plasmonic-metal/semiconductor Hetementioning

confidence: 99%

Metal/Semiconductor Hybrid Nanocrystals and Synergistic Photocatalysis Applications

Zhang¹,

Ji²,

Li³

et al. 2016

Advanced Catalytic Materials - Photocatalysis and Other Current Trends

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This review focuses on recent research efforts to synthesize metal/semiconductor hybrid nanocrystals, understand and control the photocatalytic applications. First, we summarize the synthesis methods and recent presented metal/seminconductor morphologies, including heterodimer, core/shell, and yolk/shell etc. The metal clusters and nanocrystals deposition on semiconductor micro/nano substrates with well-defined crystal face exposure will be clarified into heterodimer part. The outline of this synthesis part will be the large lattice mismatch directed interface, contact and morphologies evolution. For detailed instructions on each synthesis, the readers are referred to the corresponding literature. Secondly, the recent upcoming photocatalysis applications and research progress of these hybrid nanocrystals will be reviewed, including the photocatalytic hydrogen evolution (water splitting), photo-reduction of CO 2 and other newly emerging potential photosynthesis applications of metal/semiconductor hybrid nanocrystals. Finally, we summarize and outlook the future of this topic. From this review, we try to facilitate the understanding and further improvement of current and practical metal/semiconductor hybrid nanocrystals and photocatalysis applications.

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Surface Plasmon-Driven Water Reduction: Gold Nanoparticle Size Matters

Cited by 319 publications

References 46 publications

Hot‐Electron‐Mediated Photochemical Reactions: Principles, Recent Advances, and Challenges

Hot‐Electron‐Mediated Photochemical Reactions: Principles, Recent Advances, and Challenges

Direct Plasmon-Driven Photoelectrocatalysis

Metal/Semiconductor Hybrid Nanocrystals and Synergistic Photocatalysis Applications

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