Al@TiO<sub>2</sub> Core–Shell Nanoparticles for Plasmonic Photocatalysis

Bayles, Aaron; Tian, Shu; Zhou, Jingyi; Yuan, Lin; Yuan, Yigao; Jacobson, Christian R.; Farr, Corbin; Zhang, Ming; Swearer, Dayne F.; Solti, David; Lou, Minghe; Everitt, Henry O.; Nordlander, Peter; Halas, Naomi J.

doi:10.1021/acsnano.1c10995

Cited by 64 publications

(39 citation statements)

References 54 publications

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“…There are numerous promising opportunities for the evolution of hot carrier-induced photocatalysis, such as fabricating chiral templates of plasmoninduced photocatalysts for polarization-dependent reactivity, 51 utilizing hot carriers to control the selectivity of the multipathway reaction, 52 and manufacturing a plasmonic metal−oxide core−shell structure to prevent the corrosion of plasmonic metal that inhibits photocatalytic activity. 53…”

Section: Hot Carrier-induced Photocatalysismentioning

confidence: 99%

Surface Plasmon-Induced Hot Carriers: Generation, Detection, and Applications

et al. 2022

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Metrics & MoreArticle RecommendationsCONSPECTUS: During surface plasmon-mediated light−matter interactions, external energies on plasmonic metal nanostructures undergo energy dissipation via elastic e−e scattering, radiative luminescence, and nonradiative processes such as thermal relaxation (phonon) and electronic excitation (electron−hole pairs). In this process, surface plasmon decays dominantly through nonradiative recombination when the metal is smaller than 25 nm, forming hot carriers, including hot electrons and hot holes, with high kinetic energy of 1−3 eV. Although the ultrafast dynamics of hot carriers are on time scales ranging from femtoseconds to picoseconds, these fast-disappearing hot carriers can be collected as the steady-state photocurrent or chemicurrent by adopting the metal−semiconductor (M−S)based platform for detecting hot carrier flow. Plasmonic hot carriers, especially as they convert to an electrochemical signal, are a promising topic, and their energy conversion mechanisms are being actively studied in the fields of renewable energy, optoelectronics, and photocatalysis. Recent studies have demonstrated that these hot carriers can both improve the performance of solar energy conversion and control the catalytic activity or selectivity by directly participating in the photoelectrochemical (PEC) reaction.In this Account, we describe the inherent relationship between hot carriers and surface plasmon as well as what role hot carriers play throughout the catalytic reaction. The recent experimental work and the theoretical analysis of in situ hot carrier generation on Au nanostructures were conducted with photoconductive atomic force microscopy and finite-difference time-domain (FDTD) simulations, respectively. We highlight the recent nanoscale visualization of hot carrier flow occurring through light−matter interactions and that the localized surface plasmon field surrounding the Au nanostructure leads to boosted hot carrier generation. In addition, we highlight the recent demonstration that plasmonic hot carriers prolong the lifetime of photoexcited carriers in the MAPbI 3 /Au/TiO 2 hybrid nanodiode by the synergistic effect between plasmonic Au and perovskites. From this work, the solar-toelectron conversion performance of this nanodiode significantly increases due to the amplification of light absorption, which helps to design hybrid platforms for efficient hot carrier photovoltaics. We discuss the application of surface plasmon-driven hot electron generation, including hot electron-based photovoltaic devices and photocatalysts. We highlight the recent photoelectrochemical measurements on the Au/p-GaN heterostructures that are controlled by participating plasmonic hot carriers in the water splitting reaction. Furthermore, controlling the flow of both hot electrons and holes by developing hybrid platform configurations for hot carrier applications has promising opportunities for regulating the catalytic activities of hot carrier-based photocatalysis and improving the photoconversion efficie...

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Section: Hot Carrier-induced Photocatalysismentioning

confidence: 99%

Surface Plasmon-Induced Hot Carriers: Generation, Detection, and Applications

et al. 2022

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“…Here, we feature two works that follow different strategies. In ref , the authors follow an antenna-reactor scheme; the idea is to use a plasmonic structure as an antenna and a semiconductor that acts as a sponge for the reactant and an HC harvester. The authors are able to use Al@TiO2 core–shell structures.…”

Section: Lines To Follow and Final Remarksmentioning

confidence: 99%

Plasmon-Induced Hot Carriers: An Atomistic Perspective of the First Tens of Femtoseconds

Sánchez

Berdakin

2022

J. Phys. Chem. C

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For more than a decade the harvesting of the plasmon-induced hot carrier (HC) has promised a clean and efficient way to harness light irradiation. Here, we expose the difficulties that arise to describe the full process of plasmon-induced HC and its injection into the environment. Then, we share the perspective that we have built during the last years employing an atomistic and real-time approach of the ultrafast events that take place in the generation and direct injection of HC and their photocatalytic effect. Finally, we provide a nonexhaustive enumeration of the “lines to follow” that evidence that the plasmon-induced HC field will remain hot for many years to come.

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“…Plasmonic-metal@oxide CNHSs made of a Au, Ag, or Al core coated with either a spherical or flower-shaped shell of TiO 2 , ZrO 2, or SnO 2 , have been obtained by directing hydrolysis-condensation of transition-metal alkoxides over organic-capped Au or Ag CNC seeds in mixed aqueous/non-aqueous media, in micelles or microemulsions, eventually followed by high-temperature annealing to promote oxide crystallization [ 27 , 61 , 62 , 63 , 64 ] ( Figure 1 a,b). The shells obtained by these pathways are normally amorphous and/or extremely porous, therefore they can guarantee chemical accessibility to the noble-metal core, while allowing modulation of its plasmonic properties.…”

Section: Heterostructures With Core@shell Configurationsmentioning

confidence: 99%

Synthetic Approaches to Colloidal Nanocrystal Heterostructures Based on Metal and Metal-Oxide Materials

Nobile

Cozzoli

2022

Nanomaterials

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Composite inorganic nanoarchitectures, based on combinations of distinct materials, represent advanced solid-state constructs, where coexistence and synergistic interactions among nonhomologous optical, magnetic, chemical, and catalytic properties lay a basis for the engineering of enhanced or even unconventional functionalities. Such systems thus hold relevance for both theoretical and applied nanotechnology-based research in diverse areas, spanning optics, electronics, energy management, (photo)catalysis, biomedicine, and environmental remediation. Wet-chemical colloidal synthetic techniques have now been refined to the point of allowing the fabrication of solution free-standing and easily processable multicomponent nanocrystals with sophisticated modular heterostructure, built upon a programmed spatial distribution of the crystal phase, composition, and anchored surface moieties. Such last-generation breeds of nanocrystals are thus composed of nanoscale domains of different materials, assembled controllably into core/shell or heteromer-type configurations through bonding epitaxial heterojunctions. This review offers a critical overview of achievements made in the design and synthetic elaboration of colloidal nanocrystal heterostructures based on diverse associations of transition metals (with emphasis on plasmonic metals) and transition-metal oxides. Synthetic strategies, all leveraging on the basic seed-mediated approach, are described and discussed with reference to the most credited mechanisms underpinning regioselective heteroepitaxial deposition. The unique properties and advanced applications allowed by such brand-new nanomaterials are also mentioned.

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Al@TiO₂ Core–Shell Nanoparticles for Plasmonic Photocatalysis

Cited by 64 publications

References 54 publications

Surface Plasmon-Induced Hot Carriers: Generation, Detection, and Applications

Surface Plasmon-Induced Hot Carriers: Generation, Detection, and Applications

Plasmon-Induced Hot Carriers: An Atomistic Perspective of the First Tens of Femtoseconds

Synthetic Approaches to Colloidal Nanocrystal Heterostructures Based on Metal and Metal-Oxide Materials

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Al@TiO2 Core–Shell Nanoparticles for Plasmonic Photocatalysis

Cited by 64 publications

References 54 publications

Surface Plasmon-Induced Hot Carriers: Generation, Detection, and Applications

Surface Plasmon-Induced Hot Carriers: Generation, Detection, and Applications

Plasmon-Induced Hot Carriers: An Atomistic Perspective of the First Tens of Femtoseconds

Synthetic Approaches to Colloidal Nanocrystal Heterostructures Based on Metal and Metal-Oxide Materials

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Al@TiO₂ Core–Shell Nanoparticles for Plasmonic Photocatalysis