Ultrafast relaxation dynamics in bimetallic plasmonic catalysts

Sim, Sangwan; Beierle, Alyssa; Mantos, Philip; McCrory, Steven; Prasankumar, R. P.; Chowdhury, Sanchari

doi:10.1039/d0nr00831a

Cited by 21 publications

(10 citation statements)

References 49 publications

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“…As a refractory material, plasmonic TiN nanoparticles are less expensive and have superior thermal stability, strong surface plasmon resonance, and efficient light absorption over a broad range of visible to near IR light. In comparison to gold nanoparticles, TiN nanoparticles can achieve enhanced light-to-heat conversion efficiency due to their larger nonradiative losses. − For the reasons mentioned above, TiN plasmonic nanoparticles can open access to industrial applications.…”

Section: Introductionsupporting

confidence: 91%

Diels–Alder Augmented Epoxies with Plasmonic Nanoparticle Fillers for Efficient Photothermal Depolymerization

Mojtabai

Lindholm

McReynolds

et al. 2022

ACS Appl. Polym. Mater.

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Thermally reversible epoxies through the Diels− Alder (DA) reaction have been used for applications such as recycling, self-healing, and 3D printing. Depolymerization by bulk heating, however, would be a slow and inefficient process due to its low thermal conductivity. In this paper, photothermal conversion using refractory plasmonic titanium nitride (TiN) nanoparticles was employed for efficient and rapid depolymerization of reversible epoxies. TiN nanoparticles have superior thermal stability, broader light absorption, and higher light-to-heat conversion efficiency. They are also less expensive than more common plasmonic gold nanoparticles. Photothermal behavior of TiN nanoparticle-filled reversible epoxies was investigated as a function of concentration of TiN nanoparticles and as a function of the intensity of a light source. TiN nanoparticles could induce sufficient heat for depolymerization with a trace content, 0.01% by weight, under a broad-spectrum white light of intensity 1760 mW/cm 2 instead of a strong light source such as a laser. The reversible epoxies were prepared by a reaction between furan precursors and a bismaleimide compound. Crosslinking density was controlled by altering the architecture of furan precursors and the feed ratio between the furan precursor and the bismaleimide compound. These changes in chemical structure and degree of crosslinking permit the control of the thermomechanical properties of the reversible epoxy from soft elastomers to hard elastomers. The reversible epoxies display a flow region at around 110 °C. Depolymerization through the retro-DA was confirmed by Fourier transform infrared spectroscopy as a function of duration at a high temperature. Light-induced removability and recyclability were demonstrated by adhesion tests using the reversible epoxy/nanoparticle composites.

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Section: Introductionsupporting

confidence: 91%

Diels–Alder Augmented Epoxies with Plasmonic Nanoparticle Fillers for Efficient Photothermal Depolymerization

Mojtabai

Lindholm

McReynolds

et al. 2022

ACS Appl. Polym. Mater.

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“…This bleaching signal was due to the interband transitions of an excited electron to a conduction band. [33,34] The positive signal was plasmonic-induced peaks in the TA spectra of gold that correspond to longitudinal surface plasmons (LSPR) and transverse surface plasmons (TSPR) resonance. [33,34] Moreover, as the delay time increases, the plasmonic peak wavelengths shift toward shorter wavelengths, primarily due to lattice heating.…”

Section: Resultsmentioning

confidence: 99%

Unveiling Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse Enhancement in Gold‐Interlayered Bi₂Se₃

Saini,

Sharma,

Gautam

et al. 2024

Advanced Optical Materials

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In the realm of optoelectronic applications, the incorporation of a metal interlayer between layers of a topological material holds significant potential. The interlayer introduces benefits such as improved charge transfer efficiency, tunable band alignment, plasmonics effect, and enhanced light‐matter interactions, paving the way for more efficient and versatile optoelectronic devices. This work explores the incorporation of gold between Bi2Se3, resulting in an enhancement in the response time of photoresponse of interlayered systems (Bi2Se3‐Au‐Bi2Se3). The introduction of a gold interlayer between Bi2Se3 significantly influences the overlayer structure, crystallinity, crystallite size, and even phonon behavior. Moreover, the responsivity of the interlayered device at a bias (2 V) is found to have high responsivity with fast response and decay time (τr = 0.1 ms, and τd = 24 ms of interlayered systems) as compared to intrinsic Bi2Se3(τr = 0.6 ms, and τd = 28 ms). This change is attributed to the bandgap alteration of the Bi2Se3/Au interface, which is monitored through transient spectroscopy performed at different electric biases. This study suggests that incorporating a gold interlayer holds potential benefits for various optoelectronic applications.

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“…The relative shape, size, composition, and aggregation state of these nanostructures influences the magnitude of the plasmonic enhancement as well as the reaction dynamics of the adsorbed molecular species. 6–8…”

Section: Introductionmentioning

confidence: 99%

Plasmon resonance dynamics and enhancement effects in tris(2,2′-bipyridine)ruthenium(ii) gold nanosphere oligomers

Yunusa,

Warren,

Schauer

et al. 2024

Nanoscale

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Ultrafast relaxation dynamics in bimetallic plasmonic catalysts

Abstract: The charge carrier relaxation dynamics of bimetallic plasmonic catalysts Au/Ni and Au/Pt is significantly different from that of pure Au nanoparticles, which will impact their performance.

Cited by 21 publications

References 49 publications

Diels–Alder Augmented Epoxies with Plasmonic Nanoparticle Fillers for Efficient Photothermal Depolymerization

Diels–Alder Augmented Epoxies with Plasmonic Nanoparticle Fillers for Efficient Photothermal Depolymerization

Unveiling Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse Enhancement in Gold‐Interlayered Bi₂Se₃

Plasmon resonance dynamics and enhancement effects in tris(2,2′-bipyridine)ruthenium(ii) gold nanosphere oligomers

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Ultrafast relaxation dynamics in bimetallic plasmonic catalysts

Abstract: The charge carrier relaxation dynamics of bimetallic plasmonic catalysts Au/Ni and Au/Pt is significantly different from that of pure Au nanoparticles, which will impact their performance.

Cited by 21 publications

References 49 publications

Diels–Alder Augmented Epoxies with Plasmonic Nanoparticle Fillers for Efficient Photothermal Depolymerization

Diels–Alder Augmented Epoxies with Plasmonic Nanoparticle Fillers for Efficient Photothermal Depolymerization

Unveiling Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse Enhancement in Gold‐Interlayered Bi2Se3

Plasmon resonance dynamics and enhancement effects in tris(2,2′-bipyridine)ruthenium(ii) gold nanosphere oligomers

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Product

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Unveiling Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse Enhancement in Gold‐Interlayered Bi₂Se₃