1
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Ivanchenko M, Carroll AL, Brothers AB, Jing H. Plasmonic Ag@Cu 2O core-shell nanostructures exhibiting near-infrared photothermal effect. RSC Adv 2023; 13:31569-31577. [PMID: 37901274 PMCID: PMC10606979 DOI: 10.1039/d3ra06712b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 10/23/2023] [Indexed: 10/31/2023] Open
Abstract
This work was devoted to the investigation of the optical properties, structural characterization, and photothermal conversion performance of Ag@Cu2O nanostructures. The selection of anisotropic silver core, specifically Ag nanocubes, was driven by the possibility to tune LSPR across a broader range of the electromagnetic spectrum. The thickness of the Cu2O shell was intentionally changed through the variation in the Cu salt to the metal core nanoparticles ratios. The LSPRs of Ag(nanocube)@Cu2O core-shell nanoparticles can be fine-tuned to the spectral region to become resonant with the excitation wavelengths of 808 nm NIR laser. Due to the high refractive index of the deposited Cu2O, the redshifts of the plasmon band wavelength in the extinction spectra were observed. Consequently, the photothermal activities of the Ag(nanocube)@Cu2O core-shell NPs have been controlled by the shell thickness at the nanoscale. Ag@Cu2O nanoparticles with thickest shell (∼70 nm) exhibit the most efficient NIR photothermal effect under the irradiation of 808 nm laser at ambient conditions. Results of this work demonstrate that Ag@Cu2O hetero-nanostructures may be optimized and used for the efficient transformation of light into other forms of energy, specifically heat.
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Affiliation(s)
- Mariia Ivanchenko
- Department of Chemistry and Biochemistry, George Mason University Fairfax Virginia 22030 USA
| | - Alison L Carroll
- Department of Chemistry and Biochemistry, George Mason University Fairfax Virginia 22030 USA
| | - Andrea B Brothers
- Department of Chemistry, American University Washington DC 20016 USA
| | - Hao Jing
- Department of Chemistry and Biochemistry, George Mason University Fairfax Virginia 22030 USA
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2
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Gross N, Kuhs CT, Ostovar B, Chiang WY, Wilson KS, Volek TS, Faitz ZM, Carlin CC, Dionne JA, Zanni MT, Gruebele M, Roberts ST, Link S, Landes CF. Progress and Prospects in Optical Ultrafast Microscopy in the Visible Spectral Region: Transient Absorption and Two-Dimensional Microscopy. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:14557-14586. [PMID: 37554548 PMCID: PMC10406104 DOI: 10.1021/acs.jpcc.3c02091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/24/2023] [Indexed: 08/10/2023]
Abstract
Ultrafast optical microscopy, generally employed by incorporating ultrafast laser pulses into microscopes, can provide spatially resolved mechanistic insight into scientific problems ranging from hot carrier dynamics to biological imaging. This Review discusses the progress in different ultrafast microscopy techniques, with a focus on transient absorption and two-dimensional microscopy. We review the underlying principles of these techniques and discuss their respective advantages and applicability to different scientific questions. We also examine in detail how instrument parameters such as sensitivity, laser power, and temporal and spatial resolution must be addressed. Finally, we comment on future developments and emerging opportunities in the field of ultrafast microscopy.
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Affiliation(s)
- Niklas Gross
- Department
of Chemistry, Rice University, Houston, Texas 77005, United States
| | - Christopher T. Kuhs
- Army
Research Laboratory-South, U.S. Army DEVCOM, Houston, Texas 77005, United States
| | - Behnaz Ostovar
- Department
of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
| | - Wei-Yi Chiang
- Department
of Chemistry, Rice University, Houston, Texas 77005, United States
| | - Kelly S. Wilson
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Tanner S. Volek
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Zachary M. Faitz
- Department
of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
| | - Claire C. Carlin
- Department
of Materials Science and Engineering, Stanford
University, Stanford, California 94305, United States
| | - Jennifer A. Dionne
- Department
of Materials Science and Engineering, Stanford
University, Stanford, California 94305, United States
- Department
of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University School of Medicine, Stanford, California 94305, United States
| | - Martin T. Zanni
- Department
of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
| | - Martin Gruebele
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
- Department
of Physics, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
- Center
for Biophysics and Quantitative Biology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Sean T. Roberts
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Stephan Link
- Department
of Chemistry, Rice University, Houston, Texas 77005, United States
- Department
of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
| | - Christy F. Landes
- Department
of Chemistry, Rice University, Houston, Texas 77005, United States
- Department
of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
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3
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Bessel P, Niebur A, Kranz D, Lauth J, Dorfs D. Probing Bidirectional Plasmon-Plasmon Coupling-Induced Hot Charge Carriers in Dual Plasmonic Au/CuS Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206379. [PMID: 36642834 DOI: 10.1002/smll.202206379] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Heterostructured Au/CuS nanocrystals (NCs) exhibit localized surface plasmon resonance (LSPR) centered at two different wavelengths (551 and 1051 nm) with a slight broadening compared to respective homostructured Au and CuS NC spectra. By applying ultrafast transient absorption spectroscopy we show that a resonant excitation at the respective LSPR maxima of the heterostructured Au/CuS NCs leads to the characteristic hot charge carrier relaxation associated with both LSPRs in both cases. A comparison of the dual plasmonic heterostructure with a colloidal mixture of homostructured Au and CuS NCs shows that the coupled dual plasmonic interaction is only active in the heterostructured Au/CuS NCs. By investigating the charge carrier dynamics of the process, we find that the observed interaction is faster than phononic or thermal processes (< 100 fs). The relaxation of the generated hot charge carriers is faster for heterostructured nanocrystals and indicates that the interaction occurs as an energy transfer (we propose Landau damping or interaction via LSPR beat oscillations as possible mechanisms) or charge carrier transfer between both materials. Our results strengthen the understanding of multiplasmonic interactions in heterostructured Au/CuS NCs and will significantly advance applications where these interactions are essential, such as catalytic reactions.
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Affiliation(s)
- Patrick Bessel
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, D-30167, Hannover, Germany
| | - André Niebur
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), D-30167, Hannover, Germany
| | - Daniel Kranz
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, D-30167, Hannover, Germany
| | - Jannika Lauth
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), D-30167, Hannover, Germany
- Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076, Tübingen, Germany
| | - Dirk Dorfs
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz Universität Hannover, D-30167, Hannover, Germany
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), D-30167, Hannover, Germany
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4
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Rebmann J, Werners H, Johst F, Dohrmann M, Staechelin YU, Strelow C, Mews A, Kipp T. Cation Exchange during the Synthesis of Colloidal Type-II ZnSe-Dot/CdS-Rod Nanocrystals. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:1238-1248. [PMID: 36818587 PMCID: PMC9933437 DOI: 10.1021/acs.chemmater.2c03278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/13/2022] [Indexed: 06/18/2023]
Abstract
Cation exchange is known to occur during the synthesis of colloidal semiconductor heteronanoparticles, affecting their band gap and thus altering their optoelectronic properties. It is often neglected, especially when anisotropic heterostructures are discussed. We present a study on the role of cation exchange inevitably occurring during the growth of anisotropic dot-in-rod structures consisting of a spherical ZnSe core enclosed by a rod-shaped CdS shell. The material combination exhibits a type-II band alignment. Two reactions are compared: the shell-growth reaction of CdS on ZnSe and an exchange-only reaction of ZnSe cores to CdSe. Transmission electron microscopy and a comprehensive set of optical spectroscopy data, including linear and time-resolved absorption and fluorescence data, prove that cation exchange from ZnSe to CdSe is the dominant process in the initial stages of the shell-growth reaction. The degree of cation exchange before significant shell growth starts was determined to be about 50%, highlighting the importance of cation exchange during the heteronanostructure growth.
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5
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Nweze C, Glier TE, Rerrer M, Scheitz S, Huang Y, Zierold R, Blick R, Parak WJ, Huse N, Rübhausen M. Plasmonic hot carrier injection from single gold nanoparticles into topological insulator Bi 2Se 3 nanoribbons. NANOSCALE 2023; 15:507-514. [PMID: 36413110 DOI: 10.1039/d2nr05212a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Plasmonic gold nanoparticles injecting hot carriers into the topological insulator (TI) interface of Bi2Se3 nanoribbons are studied by resonant Raman spectroscopy. We resolve the impact of individual gold particles with sizes ranging from 140 nm down to less than 40 nm on the topological surface states of the nanoribbons. In resonance at 1.96 eV (633 nm), we find distinct phonon renormalization in the Eg2- and A1g2-modes that can be associated with plasmonic hot carrier injection. The phonon modes are strongly enhanced by a factor of 350 when tuning the excitation wavelengths into interband transition and in resonance with the surface plasmon of gold nanoparticles. At 633 nm wavelength, a plasmonic enhancement factor of 18 is observed indicating a contribution of hot carriers injected from the gold nanoparticles into the TI interface. Raman studies as a function of gold nanoparticle size reveal the strongest hot carrier injection for particles with size of 108 nm in agreement with the resonance energy of its surface plasmon. Hot carrier injection opens the opportunity to locally control the electronic properties of the TI by metal nanoparticles attached to the surface of nanoribbons.
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Affiliation(s)
- Christian Nweze
- Institut für Nanostruktur- und Festkörperphysik, Centre for Free Electron Laser Science (CFEL), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
| | - Tomke E Glier
- Institut für Nanostruktur- und Festkörperphysik, Centre for Free Electron Laser Science (CFEL), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
| | - Mika Rerrer
- Institut für Nanostruktur- und Festkörperphysik, Centre for Free Electron Laser Science (CFEL), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
| | - Sarah Scheitz
- Institut für Nanostruktur- und Festkörperphysik, Centre for Free Electron Laser Science (CFEL), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
| | - Yalan Huang
- Institut für Nanostruktur- und Festkörperphysik, Centre for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Robert Zierold
- Institut für Nanostruktur- und Festkörperphysik, Centre for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Robert Blick
- Institut für Nanostruktur- und Festkörperphysik, Centre for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Wolfgang J Parak
- Institut für Nanostruktur- und Festkörperphysik, Centre for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Nils Huse
- Institut für Nanostruktur- und Festkörperphysik, Centre for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Michael Rübhausen
- Institut für Nanostruktur- und Festkörperphysik, Centre for Free Electron Laser Science (CFEL), Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
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6
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Li H, Wang S, Wang M, Gao Y, Tang J, Zhao S, Chi H, Zhang P, Qu J, Fan F, Li C. Enhancement of Plasmon-Induced Photoelectrocatalytic Water Oxidation over Au/TiO 2 with Lithium Intercalation. Angew Chem Int Ed Engl 2022; 61:e202204272. [PMID: 35535639 DOI: 10.1002/anie.202204272] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Indexed: 11/05/2022]
Abstract
Plasmon-induced chemical reaction is an emerging field but its development faces huge challenges because of low quantum efficiency. Herein, we report that the solar energy conversion efficiency of Au/TiO2 in plasmon-induced water oxidation is greatly enhanced by intercalating Li+ into TiO2 . An incident photon-to-current efficiency as high as 2.0 %@520 nm is achieved by Au/Li0.2 TiO2 in photoelectrocatalytic water oxidation, realizing a 33-fold enhancement in photocurrent density compared with Au/TiO2 . The superior photoelectrocatalytic performance is mainly ascribed to the enhanced electric conductivity and higher catalytic activity of Li0.2 TiO2 . Furthermore, the ultrafast transient absorption spectroscopy suggests that lithium intercalation into TiO2 could change the dynamics of hot electron relaxation in Au nanoparticles. This work demonstrates that intercalation of alkaline ions into semiconductors can promote the charge separation efficiency of the plasmonic effect of Au/TiO2 .
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Affiliation(s)
- Hao Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shengyang Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China
| | - Mingtan Wang
- University of Chinese Academy of Sciences, Beijing, 100049, China.,Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yuying Gao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China
| | - Jianbo Tang
- University of Chinese Academy of Sciences, Beijing, 100049, China.,State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Shengli Zhao
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, China
| | - Haibo Chi
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China.,School of Chemical and Materials Science, University of Science and Technology of China, Hefei, 230026, China
| | - Pengfei Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China.,College of Chemistry, Jilin University, Changchun, 130012, China
| | - Jiangshan Qu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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7
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Mehla S, Selvakannan PR, Bhargava SK. Readily tunable surface plasmon resonances in gold nanoring arrays fabricated using lateral electrodeposition. NANOSCALE 2022; 14:9989-9996. [PMID: 35793170 DOI: 10.1039/d2nr02198f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Generation and fine-tuning of surface plasmon resonances is a prerequstite for several established and emerging applications such as photovoltaics, photocatalysis, photothermal therapy, surface-enhanced spectroscopy, sensing, superlensing and lasing. We present a low-cost and scalable lateral electrodeposition method for fabrication of high aspect ratio gold nanoring arrays that exhibit multiple surface plasmon resonances in the visible to near-infrared region. Nickel disc arrays of 2 µm size were initially fabricated using maskless lithography and e-beam evaporation. Selective electrodeposition of gold on the lateral surfaces of nickel disc arrays was achieved using a 50 nm SiO2 film as an insulating mask. Growing from miniscule 100 nm wide lateral surfaces of nickel discs, nanorings with height up to 1084 nm could be obtained with their thickness and aspect ratio governed by the duration of electrodeposition. Facile tuning of the number of plasmon resonances, their resonant wavelength and relative intensity is demonstrated with applications in plasmon mediated photocatalysis and surface-enhanced Raman scattering.
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Affiliation(s)
- Sunil Mehla
- Centre for Advanced Materials and Industrial Chemistry, School of Science, Engineering and Health, RMIT University, Melbourne, Australia.
| | - P R Selvakannan
- Centre for Advanced Materials and Industrial Chemistry, School of Science, Engineering and Health, RMIT University, Melbourne, Australia.
| | - Suresh K Bhargava
- Centre for Advanced Materials and Industrial Chemistry, School of Science, Engineering and Health, RMIT University, Melbourne, Australia.
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8
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Li H, Wang S, Wang M, Gao Y, Tang J, Zhao S, Chi H, Zhang P, Qu J, Fan F, Li C. Enhancement of Plasmon‐Induced Photoelectrocatalytic Water Oxidation over Au/TiO
2
with Lithium Intercalation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hao Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shengyang Wang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
| | - Mingtan Wang
- University of Chinese Academy of Sciences Beijing 100049 China
- Division of Energy Storage Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Yuying Gao
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
| | - Jianbo Tang
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Shengli Zhao
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- College of Chemical Engineering China University of Petroleum (East China) Qingdao 266580 China
| | - Haibo Chi
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
- School of Chemical and Materials Science University of Science and Technology of China Hefei 230026 China
| | - Pengfei Zhang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
- College of Chemistry Jilin University Changchun 130012 China
| | - Jiangshan Qu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Fengtao Fan
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
| | - Can Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
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9
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Ghorai N, De G, Ghosh HN. Plasmon Mediated Electron Transfer and Temperature Dependent Electron-Phonon Scattering in Gold Nanoparticles Embedded in Dielectric Films. Chemphyschem 2022; 23:e202200181. [PMID: 35621323 DOI: 10.1002/cphc.202200181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 05/20/2022] [Indexed: 11/07/2022]
Abstract
Excitation of localized surface plasmon resonance in metal nanoparticles (NPs) embedded in a glassy matrix generates hot electrons, which can be extracted for different optoelectronic applications. The insights of plasmon relaxation dynamics with varying surrounding dielectric environments and temperature dependence electron-phonon scattering process in gold (Au) NPs are still not very clear. Here, we have employed ultrafast transient absorption (TA) spectroscopy to explore the hot electron transfer, plasmon mediated electron transfer and electron-phonon dynamics of photo-excited Au NPs in glassy film matrix with variable SiO2/TiO2 compositions at cryogenic (5 K) to room temperature (300 K). Herein, we have chosen two pump excitation wavelengths (400 and 700 nm). The 400 nm excitation (d→sp) would generate hot electron and the 700 nm excitation (sp→sp) provide information of direct plasmon relaxation. Drastic reduction of the transient signal of Au NPs in the high TiO2 content film as compared to pure SiO2 confirm hot electron transfer from Au plasmon to TiO2. Electron-phonon scattering time constant (τe-ph) of Au NPs in the glassy film found to be faster in presence of TiO2 due to facile electron transfer/injection. Temperature dependent TA studies suggest electron-phonon scattering time decreases with temperature. These findings would assist to develop more advanced photo-voltaic, opto-electronic and quantum optic-based devices using the plasmonic metal NPs.
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Affiliation(s)
- Nandan Ghorai
- Institute of Nano Science and Technology, Knowledge City, Sector 81, SAS Nagar, Punjab, 140306, India
| | - Goutam De
- Institute of Nano Science and Technology, Knowledge City, Sector 81, SAS Nagar, Punjab, 140306, India
- Present address: S. N. Bose National Centre for Basic Sciences, Kolkata, India
| | - Hirendra N Ghosh
- Institute of Nano Science and Technology, Knowledge City, Sector 81, SAS Nagar, Punjab, 140306, India
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
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10
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Wang L, Zare D, Chow TH, Wang J, Magnozzi M, Chergui M. Disentangling Light- and Temperature-Induced Thermal Effects in Colloidal Au Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:3591-3599. [PMID: 35242272 PMCID: PMC8883463 DOI: 10.1021/acs.jpcc.1c10747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/31/2022] [Indexed: 06/02/2023]
Abstract
We present temperature-dependent (from room temperature to 80 °C) absorption spectra of Au/SiO2 core-shell nanoparticles (NPs) (core diameter: ∼25 nm) in water in the range from 1.5 to 4.5 eV, which spans the localized surface plasmon resonance (LSPR) and the interband transitions. A decrease in absorption with temperature over the entire spectral range is observed, which is more prominent at the LSPR. These changes are well reproduced by theoretical calculations of the absorption spectra, based on the experimentally measured temperature-dependent real (ε1) and imaginary (ε2) parts of the dielectric constant of Au NPs and of the surrounding medium. In addition, we model the photoinduced response of the NPs over the entire spectral range. The experimental and theoretical results of the thermal heating and the simulations of the photoinduced heating are compared with the ultrafast photoinduced transient absorption (TA) spectra upon excitation of the LSPR. These show that while the latter is a reliable monitor of heating of the NP and its environment, the interband region mildly responds to heating but predominantly to the population evolution of charge carriers.
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Affiliation(s)
- Lijie Wang
- Laboratory
of Ultrafast Spectroscopy, ISIC and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Davood Zare
- Laboratory
of Ultrafast Spectroscopy, ISIC and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Tsz Him Chow
- Department
of Physics, The Chinese University of Hong
Kong, 999077 Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department
of Physics, The Chinese University of Hong
Kong, 999077 Shatin, Hong Kong SAR, China
| | - Michele Magnozzi
- OptMatLab,
Dipartimento di Fisica, Università
di Genova, via Dodecaneso
33, I-16146 Genova, Italy
| | - Majed Chergui
- Laboratory
of Ultrafast Spectroscopy, ISIC and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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11
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Staechelin YU, Deffner M, Krohn S, Castillo Delgadillo C, Niehaus JS, Lange H. Carrier localization in zero-dimensional and one-dimensional CdSe–CdS heterostructures. J Chem Phys 2022; 156:061102. [DOI: 10.1063/5.0079619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Michael Deffner
- Institut für Anorganische und Angewandte Chemie, Universität Hamburg, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | | | | | | | - Holger Lange
- Institut für Physikalische Chemie, Universität Hamburg, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
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12
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Saha S, Yang J, Masouleh SSM, Botton G, Soleymani L. Hot hole direct photoelectrochemistry of Au NPs: Interband versus Intraband hot carriers. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Lyu P, Espinoza R, Khan MI, Spaller WC, Ghosh S, Nguyen SC. Mechanistic insight into deep holes from interband transitions in Palladium nanoparticle photocatalysts. iScience 2022; 25:103737. [PMID: 35118357 PMCID: PMC8792079 DOI: 10.1016/j.isci.2022.103737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/17/2021] [Accepted: 12/30/2021] [Indexed: 11/23/2022] Open
Abstract
Utilizing hot electrons generated from localized surface plasmon resonance is of widespread interest in the photocatalysis of metallic nanoparticles. However, hot holes, especially generated from interband transitions, have not been fully explored for photocatalysis yet. In this study, a photocatalyzed Suzuki-Miyaura reaction using mesoporous Pd nanoparticle photocatalyst served as a model to study the role of hot holes. Quantum yields of the photocatalysts increase under shorter wavelength excitations and correlate to “deeper” energy of the holes from the Fermi level. This work suggests that deeper holes in the d-band catalyze the oxidative addition of aryl halide R-X onto Pd0 at the nanoparticles' surface to form R-PdII-X complex, thus accelerating the rate-determining step of the catalytic cycle. The hot electrons do not play a decisive role. In the future, catalytic mechanisms induced by deep holes should deserve as much attention as the well-known hot electron transfer mechanism. Comparison of quantum yield across different wavelengths Interband transitions from shorter wavelength excitation offering deeper holes Deeper holes with stronger oxidizing power for higher quantum yield
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14
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Diroll BT, Jeong S, Ye X. Ultrafast Dynamics of Colloidal Copper Nanorods: Intraband versus Interband Excitation. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Benjamin T. Diroll
- Center for Nanoscale Materials Argonne National Laboratory 9700 S. Cass Avenue Lemont IL 60439 USA
| | - Soojin Jeong
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Xingchen Ye
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
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15
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Nazemi M, El-Sayed MA. Managing the Nitrogen Cycle via Plasmonic (Photo)Electrocatalysis: Toward Circular Economy. Acc Chem Res 2021; 54:4294-4304. [PMID: 34719918 DOI: 10.1021/acs.accounts.1c00446] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
As renewable energy sources are either intermittent in nature or remote in location, developing cost-effective, sustainable, modular systems and technologies to store and transport renewables at an industrial scale is imperative. Storing cheap renewable electricity into chemical bonds (i.e., chemical energy storage) could be a transformative opportunity for reliable and resilient grid energy storage. This approach enables renewables to be stored and shipped similarly to fossil fuels. Currently, the chemical industry primarily consumes fossil feedstock as an energy source, which has been the standard for over a century. A paradigm shift is required to move toward a more sustainable route for chemical synthesis by electrifying and decarbonizing the modern chemical industry. As renewable electricity costs decrease, (photo)electrosynthesis is gaining interest for synthesizing high-value and high-energy fuels and molecules in a clean, sustainable, and decentralized manner.The nitrogen cycle is one of the Earth's most critical biogeochemical cycles since nitrogen is a vital element for all living organisms. Artificial nitrogen fixation via a (photo)electrochemical system powered by renewables provides an alternative route to resource- and carbon-intensive thermochemical processes. (Photo)electrochemical nitrogen fixation at a large scale necessitates the discovery of active, selective, and stable heterogeneous (photo)electrocatalysts. In addition, the use of advanced in situ and operando spectroscopic techniques is needed to pinpoint the underlying reaction mechanisms. The selectivity of nitrogen (N2) molecules on the catalyst surface and suppressing thermodynamically favorable side reactions (e.g., hydrogen evolution reaction) are the main bottlenecks in improving the rate of (photo)electrochemical nitrogen fixation in aqueous solutions. The rational design of electrode, electrolyte, and reactors is required to weaken the strong nitrogen-nitrogen triple bond (N≡N) at or near ambient conditions. This Account covers our group's recent advances in synthesizing shape-controlled hybrid plasmonic nanoparticles, including plasmonic-semiconductor and plasmonic-transition metal nanostructures with increased surface areas. The nanocatalysts' selectivity and activity toward nitrogen conversion are benchmarked in liquid- and gas-phase electrochemical systems. We leverage operando vibrational-type spectroscopy (i.e., surface-enhanced Raman spectroscopy (SERS)) to identify intermediate species relevant to nitrogen fixation at the electrode-electrolyte interface to gain mechanistic insights into reaction mechanisms, leading to the discovery of more efficient catalysts. Operando SERS revealed that the nitrogen reduction reaction (NRR) to ammonia on hybrid plasmonic-transition metal nanoparticle surfaces (e.g., Pd-Ag) occurs through an associative mechanism. In the NRR process, hydrazine (N2H4) is consumed as an intermediate species. A femtosecond pulsed laser is used to synthesize hybrid plasmonic photocatalysts with homogeneously distributed Pd atoms on a Au nanorod surface, resulting in enhanced optoelectronic and catalytic properties. The overarching goal is to develop modular photoelectrochemical systems for long-duration renewable energy storage. In the context of nitrogen fixation, we aim to propose strategies to manage the nitrogen cycle through the interconversion of N2 and active nitrogen-containing compounds (e.g., NH3, NOx), enabling a circular nitrogen economy with sustainable and positive social and economic outcomes. The versatile approaches presented in this Account can inform future opportunities in (photo)electrochemical energy conversion systems and solar fuel-based applications.
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Affiliation(s)
- Mohammadreza Nazemi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mostafa A. El-Sayed
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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16
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Hu F, Guan ZJ, Yang G, Wang JQ, Li JJ, Yuan SF, Liang GJ, Wang QM. Molecular Gold Nanocluster Au 156 Showing Metallic Electron Dynamics. J Am Chem Soc 2021; 143:17059-17067. [PMID: 34609874 DOI: 10.1021/jacs.1c06716] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The boundary between molecular and metallic gold nanoclusters is of special interest. The difficulty in obtaining atomically precise nanoclusters larger than 2 nm limits the determination of such a boundary. The synthesis and total structural determination of the largest all-alkynyl-protected gold nanocluster (Ph4P)6[Au156(C≡CR)60] (R = 4-CF3C6H4-) (Au156) are reported. It presents an ideal platform for studying the relationship between the structure and the metallic nature. Au156 has a rod shape with the length and width of the kernel being 2.38 and 2.04 nm, respectively. The cluster contains a concentric Au126 core structure (Au46@Au50@Au30) protected by 30 linear RC≡C-Au-C≡CR staple motifs. It is interesting that Au156 displays multiple excitonic peaks in the steady-state absorption spectrum (molecular) and pump-power-dependent excited-state dynamics as revealed in the transient absorption spectrum (metallic), which indicates that Au156 is a critical crossover cluster for the transition from molecular to metallic state. Au156 is the smallest-sized gold nanocluster showing metal-like electron dynamics, and it is recognized that the cluster shape is one of the important factors determining the molecular or metallic nature of a gold nanocluster.
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Affiliation(s)
- Feng Hu
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, P.R. China
| | - Zong-Jie Guan
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, P.R. China
| | - Gaoyuan Yang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, P.R. China
| | - Jia-Qi Wang
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, P.R. China
| | - Jiao-Jiao Li
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, P.R. China
| | - Shang-Fu Yuan
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, P.R. China
| | - Gui-Jie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, P.R. China
| | - Quan-Ming Wang
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, P.R. China
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17
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Sygletou M, Benedetti S, Ferrera M, Pierantozzi GM, Cucini R, Della Valle G, Carrara P, De Vita A, di Bona A, Torelli P, Catone D, Panaccione G, Canepa M, Bisio F. Quantitative Ultrafast Electron-Temperature Dynamics in Photo-Excited Au Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100050. [PMID: 34061425 DOI: 10.1002/smll.202100050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/16/2021] [Indexed: 06/12/2023]
Abstract
The femtosecond evolution of the electronic temperature of laser-excited gold nanoparticles is measured, by means of ultrafast time-resolved photoemission spectroscopy induced by extreme-ultraviolet radiation pulses. The temperature of the electron gas is deduced by recording and fitting high-resolution photo emission spectra around the Fermi edge of gold nanoparticles providing a direct, unambiguous picture of the ultrafast electron-gas dynamics. These results will be instrumental to the refinement of existing models of femtosecond processes in laterally-confined and bulk condensed-matter systems, and for understanding more deeply the role of hot electrons in technological applications.
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Affiliation(s)
- Maria Sygletou
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | | | - Marzia Ferrera
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | - Gian Marco Pierantozzi
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Riccardo Cucini
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Giuseppe Della Valle
- Dipartimento di Fisica, IFN-CNR, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Pietro Carrara
- Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, Italy
| | - Alessandro De Vita
- Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, Italy
| | | | - Piero Torelli
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Daniele Catone
- Istituto di Struttura della Materia - CNR (ISM-CNR), EuroFEL Support Laboratory (EFSL), Via del Fosso del Cavaliere, 100, I-00133, Rome, Italy
| | - Giancarlo Panaccione
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Maurizio Canepa
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | - Francesco Bisio
- CNR-SPIN Istituto Superconduttori Materiali Innovativi e Dispositivi, C.so Perrone 24, I-16152, Genova, Italy
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18
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Nazemi M, Panikkanvalappil SR, Liao CK, Mahmoud MA, El-Sayed MA. Role of Femtosecond Pulsed Laser-Induced Atomic Redistribution in Bimetallic Au-Pd Nanorods on Optoelectronic and Catalytic Properties. ACS NANO 2021; 15:10241-10252. [PMID: 34032116 DOI: 10.1021/acsnano.1c02347] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Utilizing solar energy for chemical transformations has attracted a growing interest in promoting the clean and modular chemical synthesis approach and addressing the limitations of conventional thermocatalytic systems. Under light irradiation, noble metal nanoparticles, particularly those characterized by localized surface plasmon resonance, commonly known as plasmonic nanoparticles, generate a strong electromagnetic field, excited hot carriers, and photothermal heating. Plasmonic nanoparticles enabling efficient absorption of light in the visible range have moderate catalytic activities. However, the catalytic performance of a plasmonic nanoparticle can be significantly enhanced by incorporating a highly catalytically active metal domain onto its surface. In this study, we demonstrate that femtosecond laser-induced atomic redistribution of metal domains in bimetallic Au-Pd nanorods (NRs) can enhance its photocurrent response by 2-fold compared to parent Au-Pd NRs. We induce structure changes on Au-Pd NRs by irradiating them with a femtosecond pulsed laser at 808 nm to precisely redistribute Pd atoms on AuNR surfaces, resulting in modified electronic and optical properties and, thereby, enhanced catalytic activity. We also investigate the trade-off between the effect of light absorption and catalytic activity by optimizing the structure and composition of bimetallic Au-Pd nanoparticles. This work provides insight into the design of hybrid plasmonic-catalytic nanostructures with well-tailored geometry, composition, and structure for solar-fuel-based applications.
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Affiliation(s)
- Mohammadreza Nazemi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Sajanlal R Panikkanvalappil
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02210, United States
| | - Chih-Kai Liao
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Mahmoud A Mahmoud
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Mostafa A El-Sayed
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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19
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Saha S, Victorious A, Soleymani L. Modulating the photoelectrochemical response of titanium dioxide (TiO2) photoelectrodes using gold (Au) nanoparticles excited at different wavelengths. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138154] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Yang JL, He YL, Ren H, Zhong HL, Lin JS, Yang WM, Li MD, Yang ZL, Zhang H, Tian ZQ, Li JF. Boosting Photocatalytic Hydrogen Evolution Reaction Using Dual Plasmonic Antennas. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00795] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jing-Liang Yang
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Yong-Lin He
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - He Ren
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Han-Liang Zhong
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Jia-Sheng Lin
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Wei-Min Yang
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Ming-De Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Zhi-Lin Yang
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Hua Zhang
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Zhong-Qun Tian
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
| | - Jian-Feng Li
- College of Physical Science and Technology, College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Energy, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
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21
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Kakkanattu A, Eerqing N, Ghamari S, Vollmer F. Review of optical sensing and manipulation of chiral molecules and nanostructures with the focus on plasmonic enhancements [Invited]. OPTICS EXPRESS 2021; 29:12543-12579. [PMID: 33985011 DOI: 10.1364/oe.421839] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Chiral molecules are ubiquitous in nature; many important synthetic chemicals and drugs are chiral. Detecting chiral molecules and separating the enantiomers is difficult because their physiochemical properties can be very similar. Here we review the optical approaches that are emerging for detecting and manipulating chiral molecules and chiral nanostructures. Our review focuses on the methods that have used plasmonics to enhance the chiroptical response. We also review the fabrication and assembly of (dynamic) chiral plasmonic nanosystems in this context.
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22
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Ng KM, Lai SKM, Chen Z, Cheng YH, Tang HW, Huang W, Su Y, Yang J. Harvesting More Energetic Photoexcited Electrons from Closely Packed Gold Nanoparticles. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:815-824. [PMID: 33555854 DOI: 10.1021/jasms.0c00480] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The characterization of photoexcited electrons on the surface of nanomaterial remains challenging. Herein, laser excitation mass spectrometry combined with a chemical thermometer and electron acceptor has been developed to characterize the energetics and population density of photoexcited electrons transferred from gold nanoparticles (AuNPs). In contrast to laser fluence and bias voltage, the hot spots of closely packed AuNPs play a more significant role in enhancing the average energetics of photoexcited electrons, which can be harvested effectively by the electron acceptor. By harvesting more energetic photoexcited electrons for the desorption and ionization process, it is anticipated that the sensitive detection of biomarkers can be achieved, which is beneficial to metabolomic studies and early disease diagnosis.
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Affiliation(s)
- Kwan-Ming Ng
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, P. R. China
| | - Samuel Kin-Man Lai
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Ziyong Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Yu-Hong Cheng
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Ho-Wai Tang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
| | - Wei Huang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, P. R. China
| | - Yang Su
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, P. R. China
| | - Jun Yang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S.A.R., P. R. China
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23
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Wang L, Takeda S, Sato R, Sakamoto M, Teranishi T, Tamai N. Morphology-Dependent Coherent Acoustic Phonon Vibrations and Phonon Beat of Au Nanopolyhedrons. ACS OMEGA 2021; 6:5485-5489. [PMID: 33681589 PMCID: PMC7931377 DOI: 10.1021/acsomega.0c05806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/25/2021] [Indexed: 06/06/2023]
Abstract
Coherent acoustic phonon vibrations of Au nanopolyhedrons, including nanocubes, nano-octahedrons, and nanocuboctahedrons, in aqueous solutions and poly(vinyl alcohol) (PVA) films, were investigated using transient absorption (TA) spectroscopy combined with finite element analysis based on continuum elastic theory. In each type of nanopolyhedron, two vibrational modes with similar quality factors (Qs) and phases were observed, suggesting that both were induced by thermal expansion. The low-frequency vibrational mode represents a tip-to-tip displacement in each nanopolyhedron, whereas the high-frequency mode is the breathing vibration of the whole particle and reveals morphology dependence, displaying a face-to-face displacement in nanocuboctahedrons, an edge-to-edge displacement in nano-octahedrons, and a combination of face-to-face and edge-to-edge displacements in nanocubes. Moreover, a clear phonon beat was identified in the two vibrational modes of the nanocuboctahedrons. Our experimental results provide a possible application of morphology-controllable metal nanoresonators.
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Affiliation(s)
- Li Wang
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Shohei Takeda
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Ryota Sato
- Institute
for Chemical Research, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Masanori Sakamoto
- Institute
for Chemical Research, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Toshiharu Teranishi
- Institute
for Chemical Research, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Naoto Tamai
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
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24
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Diroll BT, Brumberg A, Leonard AA, Panuganti S, Watkins NE, Cuthriell SA, Harvey SM, Kinigstein ED, Yu J, Zhang X, Kanatzidis MG, Wasielewski MR, Chen LX, Schaller RD. Photothermal behaviour of titanium nitride nanoparticles evaluated by transient X-ray diffraction. NANOSCALE 2021; 13:2658-2664. [PMID: 33496308 DOI: 10.1039/d0nr08202c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The photothermal properties of metal nitrides have recently received significant attention owing to diverse applications in solar energy conversion, photothermal therapies, photoreactions, and thermochromic windows. Here, the photothermal response of titanium nitride nanoparticles is examined using transient X-ray diffraction, in which optical excitation is synchronized with X-ray pulses to characterize dynamic changes in the TiN lattice. Photoinduced diffraction data is quantitatively analyzed to determine increases in the TiN lattice spacing, which are furthermore calibrated against static, temperature-dependent diffraction patterns of the same samples. Measurements of 20 nm and 50 nm diameter TiN nanoparticles reveal transient lattice heating from room temperature up to ∼175 °C for the highest pump fluences investigated here. Increasing excitation intensity drives sublinear increases in lattice temperature, due to increased heat capacity at the higher effective temperatures achieved at higher powers. Temporal dynamics show that higher excitation intensity drives not only higher lattice temperatures, but also unexpectedly slower cooling of the TiN nanoparticles, which is attributed to heating of the solvent proximal to the nanoparticle surface.
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Affiliation(s)
- Benjamin T Diroll
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Alexandra Brumberg
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Ariel A Leonard
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA and Chemical Science and Engineering, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Shobhana Panuganti
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Nicolas E Watkins
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Shelby A Cuthriell
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Samantha M Harvey
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, IL 60208, USA
| | - Eli D Kinigstein
- X-ray Sciences Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Jin Yu
- X-ray Sciences Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Xiaoyi Zhang
- X-ray Sciences Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, IL 60208, USA and Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, IL 60208, USA
| | - Lin X Chen
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA and Chemical Science and Engineering, Argonne National Laboratory, Lemont, IL 60439, USA and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, IL 60208, USA
| | - Richard D Schaller
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA. and Department of Chemistry, Northwestern University, Evanston, IL 60208, USA and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, IL 60208, USA
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25
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Saha S, Victorious A, Pandey R, Clifford A, Zhitomirsky I, Soleymani L. Differential Photoelectrochemical Biosensing Using DNA Nanospacers to Modulate Electron Transfer between Metal and Semiconductor Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36895-36905. [PMID: 32814377 DOI: 10.1021/acsami.0c09443] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As dynamic biorecognition agents such as functional nucleic acids become widely used in biosensing, there is a need for ultrasensitive signal transduction strategies, beyond fluorescence, that are robust and stable for operation in heterogeneous biological samples. Photoelectrochemical readout offers a pathway toward this goal as it offers the simplicity and scalability of electrochemical readout, in addition to compatibility with a broad range of nanomaterials used as labels for signal transduction. Here, a differential photoelectrochemical biosensing approach is reported, in which DNA nanospacers are used to program the response of two sensing channels. The differences in the motional dynamics of DNA probes immobilized on different channels are used to control the interaction between Au and TiO2 nanoparticles positioned at the two ends of the DNA nanospacer to achieve differential signal generation. Depending on the composition of the DNA constructs (fraction of the DNA sequence i.e., double-stranded), the channels can be programmed to produce a signal-on or a signal-off response. Incident photon-to-current conversion efficiency, UV-vis spectroscopy, and flat-band potential measurement indicate that direct transfer of electrons between metallic and semiconductive nanoparticles is responsible for the signal-on response, and incident light absorption and steric hindrance are responsible for the signal-off response. The differential photoelectrochemical signal readout developed here increases the device sensitivity by up to three times compared to a single channel design and demonstrates a limit of detection of 800 aM.
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Affiliation(s)
- Sudip Saha
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Amanda Victorious
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Richa Pandey
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Amanda Clifford
- Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Igor Zhitomirsky
- Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Leyla Soleymani
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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26
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Mao Z, Espinoza R, Garcia A, Enwright A, Vang H, Nguyen SC. Tuning Redox Potential of Gold Nanoparticle Photocatalysts by Light. ACS NANO 2020; 14:7038-7045. [PMID: 32441918 DOI: 10.1021/acsnano.0c01704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Metallic nanoparticle-based photocatalysts have gained a lot of interest in catalyzing oxidation-reduction reactions. In previous studies, the poor performance of these catalysts is partly due to their operation that relies on picosecond-lifetime hot carriers. In this work, electrons that accumulate at a photostationary state, generated by photocharging the catalysts, have a much longer lifetime for catalysis. This approach makes it possible to determine and tune the photoredox potentials of the catalysts. As demonstrated in a model reaction, the photostationary state of the photocatalyzed oxidative etching of colloidal gold nanoparticles using FeCl3 was established under continuous irradiation of different wavelengths. The photoredox potentials of the nanoparticles were then calculated using the Nernst equation. The potentials can be tuned to a range of 1.28 to 1.40 V (vs SHE) under irradiation of different wavelengths in the range of 450 to 517 nm. The effects of particle size or optical power on the photoredox potentials are small compared to the wavelength effect. Control over the photoredox potential of the particles using different excitation wavelengths can potentially be used to tune the activities and selectivities of metallic nanoparticle photocatalysts.
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Affiliation(s)
- Ziliang Mao
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Randy Espinoza
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Anthony Garcia
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Adrian Enwright
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Hnubci Vang
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Son C Nguyen
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
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27
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Zhang Q, Liu Y, Xu Z, Zhao Y, Chaker M, Ma D. Optimized design and mechanistic understanding of plasmon and upconversion enhanced broadband photocatalysts. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Stofela SKF, Kizilkaya O, Diroll BT, Leite TR, Taheri MM, Willis DE, Baxter JB, Shelton WA, Sprunger PT, McPeak KM. A Noble-Transition Alloy Excels at Hot-Carrier Generation in the Near Infrared. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906478. [PMID: 32347620 DOI: 10.1002/adma.201906478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 03/19/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Above-equilibrium "hot"-carrier generation in metals is a promising route to convert photons into electrical charge for efficient near-infrared optoelectronics. However, metals that offer both hot-carrier generation in the near-infrared and sufficient carrier lifetimes remain elusive. Alloys can offer emergent properties and new design strategies compared to pure metals. Here, it is shown that a noble-transition alloy, Aux Pd1- x , outperforms its constituent metals concerning generation and lifetime of hot carriers when excited in the near-infrared. At optical fiber wavelengths (e.g., 1550 nm), Au50 Pd50 provides a 20-fold increase in the number of ≈0.8 eV hot holes, compared to Au, and a threefold increase in the carrier lifetime, compared to Pd. The discovery that noble-transition alloys can excel at hot-carrier generation reveals a new material platform for near-infrared optoelectronic devices.
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Affiliation(s)
- Sara K F Stofela
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Orhan Kizilkaya
- Center for Advanced Microstructures & Devices, Louisiana State University, Baton Rouge, LA, 70806, USA
| | - Benjamin T Diroll
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Tiago R Leite
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Mohammad M Taheri
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, 19104, USA
| | - Daniel E Willis
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Jason B Baxter
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, 19104, USA
| | - William A Shelton
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Phillip T Sprunger
- Center for Advanced Microstructures & Devices, Louisiana State University, Baton Rouge, LA, 70806, USA
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Kevin M McPeak
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
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29
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Hoeing D, Schulz F, Mueller NS, Reich S, Lange H. Dark plasmon modes for efficient hot electron generation in multilayers of gold nanoparticles. J Chem Phys 2020; 152:064710. [PMID: 32061229 DOI: 10.1063/1.5131696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The excitation of dark plasmons, i.e., coupled plasmon modes with a vanishing net dipole, is expected to favor Landau damping over radiative damping. Dark plasmon excitation might, therefore, lead to an increased absorption of energy within gold nanoparticles, resulting in a strong generation of hot electrons compared to the generation via bright plasmons. We performed transient-absorption spectroscopy on gold nanoparticle films to assess the initial electronic temperature before thermalization. We observe a significant increase in the electron-phonon coupling time when dark plasmon modes are excited in these films. The results indicate an efficient energy absorption due to the suppressed radiative decay of dark plasmon modes and a subsequent energy transformation into hot electrons.
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Affiliation(s)
- Dominik Hoeing
- Institute for Physical Chemistry, Universität Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany
| | - Florian Schulz
- Institute for Physical Chemistry, Universität Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany
| | - Niclas S Mueller
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Stephanie Reich
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Holger Lange
- Institute for Physical Chemistry, Universität Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany
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30
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Rodio M, Graf M, Schulz F, Mueller NS, Eich M, Lange H. Experimental Evidence for Nonthermal Contributions to Plasmon-Enhanced Electrochemical Oxidation Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05401] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Marina Rodio
- Hamburg Centre for Advanced Imaging of Matter, Luruper Chaussee 149, Hamburg 22761, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
| | - Matthias Graf
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, Geesthacht D-21502, Germany
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, Hamburg D-21073, Germany
| | - Florian Schulz
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
| | - Niclas S. Mueller
- Department of Physics, Freie Universitat Berlin, Arnimallee 14, Berlin D-14195, Germany
| | - Manfred Eich
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, Geesthacht D-21502, Germany
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, Hamburg D-21073, Germany
| | - Holger Lange
- Hamburg Centre for Advanced Imaging of Matter, Luruper Chaussee 149, Hamburg 22761, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
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31
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Zhang X, Wang M, Tang F, Zhang H, Fu Y, Liu D, Song X. Transient Electronic Depletion and Lattice Expansion Induced Ultrafast Bandedge Plasmons. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902408. [PMID: 31993295 PMCID: PMC6974950 DOI: 10.1002/advs.201902408] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/27/2019] [Indexed: 06/01/2023]
Abstract
Strong optical excitation of plasmonic nanostructures may induce simultaneous interband and intraband electronic transitions. However, interaction mechanisms between interband, intraband, and plasmon-band processes have not been thoroughly understood. In particular, optical-heating-induced lattice expansion, which definitely leads to shift of the Fermi level, has not been taken into account in plasmonic studies. Here, it is shown that plasmonic bandedge shift is responsible for the optical modulation on the boundary between plasmonic electron oscillation and interband transitions via investigations on gold nanofilms and nanoparticles. Strong optical excitation induces transient depletion of the conduction band just below the Fermi level through intraband transitions, while the subsequent lattice heating induces transient thermal expansion and hence lowers the Fermi level. Both effects reduce the threshold for interband transitions and therefore push the plasmonic bandedge to the red. These discoveries introduce a first correlation between plasmonic response and optical excitation induced thermal expansion of lattices. The revealed Fermi-level adjustment mechanism allows alignment of electronic levels at the metal-semiconductor interfaces, which applies to all conductive materials and renders reliable physics for the design of plasmonic or optoelectronic devices.
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Affiliation(s)
- Xinping Zhang
- Institute of Information Photonics Technology and College of Applied SciencesBeijing University of TechnologyBeijing100124P. R. China
| | - Meng Wang
- Institute of Information Photonics Technology and College of Applied SciencesBeijing University of TechnologyBeijing100124P. R. China
| | - Fawei Tang
- College of Materials Science and EngineeringBeijing University of TechnologyBeijing100124P. R. China
| | - Huanzhen Zhang
- School of Mathematics and PhysicsHebei University of EngineeringHandan056038P. R. China
| | - Yulan Fu
- Institute of Information Photonics Technology and College of Applied SciencesBeijing University of TechnologyBeijing100124P. R. China
| | - Dong Liu
- College of Materials Science and EngineeringBeijing University of TechnologyBeijing100124P. R. China
| | - Xiaoyan Song
- College of Materials Science and EngineeringBeijing University of TechnologyBeijing100124P. R. China
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32
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Hogan LT, Horak EH, Ward JM, Knapper KA, Nic Chormaic S, Goldsmith RH. Toward Real-Time Monitoring and Control of Single Nanoparticle Properties with a Microbubble Resonator Spectrometer. ACS NANO 2019; 13:12743-12757. [PMID: 31614083 PMCID: PMC6887843 DOI: 10.1021/acsnano.9b04702] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 10/15/2019] [Indexed: 05/22/2023]
Abstract
Optical microresonators have widespread application at the frontiers of nanophotonic technology, driven by their ability to confine light to the nanoscale and enhance light-matter interactions. Microresonators form the heart of a recently developed method for single-particle photothermal absorption spectroscopy, whereby the microresonators act as microscale thermometers to detect the heat dissipated by optically pumped, nonluminescent nanoscopic targets. However, translation of this technology to chemically dynamic systems requires a platform that is mechanically stable, solution compatible, and visibly transparent. We report microbubble absorption spectrometers as a versatile platform that meets these requirements. Microbubbles integrate a two-port microfluidic device within a whispering gallery mode microresonator, allowing for the facile exchange of chemical reagents within the resonator's interior while maintaining a solution-free environment on its exterior. We first leverage these qualities to investigate the photoactivated etching of single gold nanorods by ferric chloride, providing a method for rapid acquisition of spatial and morphological information about nanoparticles as they undergo chemical reactions. We then demonstrate the ability to control nanorod orientation within a microbubble through optically exerted torque, a promising route toward the construction of hybrid photonic-plasmonic systems. Critically, the reported platform advances microresonator spectrometer technology by permitting room-temperature, aqueous experimental conditions, which may be used for time-resolved single-particle experiments on non-emissive, nanoscale analytes engaged in catalytically and biologically relevant chemical dynamics.
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Affiliation(s)
- Levi T. Hogan
- Department
of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Erik H. Horak
- Department
of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jonathan M. Ward
- Light-Matter
Interactions for Quantum Technologies Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan
| | - Kassandra A. Knapper
- Department
of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Síle Nic Chormaic
- Light-Matter
Interactions for Quantum Technologies Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan
| | - Randall H. Goldsmith
- Department
of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- E-mail:
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33
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Chi Z, Chen H, Zhao Q, Weng YX. Ultrafast carrier and phonon dynamics in few-layer 2H-MoTe 2. J Chem Phys 2019; 151:114704. [PMID: 31542040 DOI: 10.1063/1.5115467] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
By using femtosecond pump-probe spectroscopy with broadband detection from near-infrared to midinfrared, the carrier and phonon dynamics in few-layer 2H-MoTe2 after ultrafast excitation have been investigated in detail. Immediately following the photoexcitation, an ultrafast relaxation of the generated hot carriers by releasing phonons is observed within hundreds of femtoseconds. The subsequent electron-hole recombination with a time constant of ∼1.5 ps is clearly identified and demonstrated to be mediated through a defect-assisted process. Furthermore, we confirm that the observed redshift of the exciton resonance energy on longer time scales arises from the ultrafast thermalization of the 2H-MoTe2 lattice caused by the transfer of electronic excitation to the phonon system. As a result, the thermalization dynamics of the lattice within 2 ps and the following cooling process of the phonon system on the 100 ps time scale are directly monitored.
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Affiliation(s)
- Zhen Chi
- Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Hailong Chen
- Beijing National Laboratory for Condensed Matter Physics, CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Qing Zhao
- Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Yu-Xiang Weng
- Beijing National Laboratory for Condensed Matter Physics, CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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34
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Anomalous phonon relaxation in Au 333(SR) 79 nanoparticles with nascent plasmons. Proc Natl Acad Sci U S A 2019; 116:13215-13220. [PMID: 31209027 DOI: 10.1073/pnas.1904337116] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Research on plasmons of gold nanoparticles has gained broad interest in nanoscience. However, ultrasmall sizes near the metal-to-nonmetal transition regime have not been explored until recently due to major synthetic difficulties. Herein, intriguing electron dynamics in this size regime is observed in atomically precise Au333(SR)79 nanoparticles. Femtosecond transient-absorption spectroscopy reveals an unprecedented relaxation process of 4-5 ps-a fast phonon-phonon relaxation process, together with electron-phonon coupling (∼1 ps) and normal phonon-phonon coupling (>100 ps) processes. Three types of -R capped Au333(SR)79 all exhibit two plasmon-bleaching signals independent of the -R group as well as solvent, indicating plasmon splitting and quantum effect in the ultrasmall core of Au333(SR)79 This work is expected to stimulate future work on the transition-size regime of nanometals and discovery of behavior of nascent plasmons.
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35
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Gold Nanoclusters: Bridging Gold Complexes and Plasmonic Nanoparticles in Photophysical Properties. NANOMATERIALS 2019; 9:nano9070933. [PMID: 31261666 PMCID: PMC6669669 DOI: 10.3390/nano9070933] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 01/10/2023]
Abstract
Recent advances in the determination of crystal structures and studies of optical properties of gold nanoclusters in the size range from tens to hundreds of gold atoms have started to reveal the grand evolution from gold complexes to nanoclusters and further to plasmonic nanoparticles. However, a detailed comparison of their photophysical properties is still lacking. Here, we compared the excited state behaviors of gold complexes, nanolcusters, and plasmonic nanoparticles, as well as small organic molecules by choosing four typical examples including the Au10 complex, Au25 nanocluster (1 nm metal core), 13 diameter Au nanoparticles, and Rhodamine B. To compare their photophysical behaviors, we performed steady-state absorption, photoluminescence, and femtosecond transient absorption spectroscopic measurements. It was found that gold nanoclusters behave somewhat like small molecules, showing both rapid internal conversion (<1 ps) and long-lived excited state lifetime (about 100 ns). Unlike the nanocluster form in which metal–metal transitions dominate, gold complexes showed significant charge transfer between metal atoms and surface ligands. Plasmonic gold nanoparticles, on the other hand, had electrons being heated and cooled (~100 ps time scale) after photo-excitation, and the relaxation was dominated by electron–electron scattering, electron–phonon coupling, and energy dissipation. In both nanoclusters and plasmonic nanoparticles, one can observe coherent oscillations of the metal core, but with different fundamental origins. Overall, this work provides some benchmarking features for organic dye molecules, organometallic complexes, metal nanoclusters, and plasmonic nanoparticles.
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36
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Hattori Y, Abdellah M, Meng J, Zheng K, Sá J. Simultaneous Hot Electron and Hole Injection upon Excitation of Gold Surface Plasmon. J Phys Chem Lett 2019; 10:3140-3146. [PMID: 31117685 DOI: 10.1021/acs.jpclett.9b01085] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We have successfully investigated the simultaneous injection of hot electrons and holes upon excitation of gold localized surface plasmon resonance (LSPR). The studies were performed on all-solid-state plasmonic system composed of titanium dioxide (TiO2)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) p-n junctions with gold nanoparticles (Au NPs). The study revealed that both charge carriers are transferred within 200 fs to the respective charge acceptors, exhibiting a free carrier transport behavior. We also confirmed that the transfer of charge carriers are accompanied by change in the initial relaxation dynamics of Au NPs.
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Affiliation(s)
- Yocefu Hattori
- Physical Chemistry Division, Department of Chemistry, Ångström Laboratory , Uppsala University , 75120 Uppsala , Sweden
| | - Mohamed Abdellah
- Physical Chemistry Division, Department of Chemistry, Ångström Laboratory , Uppsala University , 75120 Uppsala , Sweden
- Department of Chemistry, Qena Faculty of Science , South Valley University , 83523 Qena , Egypt
| | - Jie Meng
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| | - Kaibo Zheng
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
- Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
| | - Jacinto Sá
- Physical Chemistry Division, Department of Chemistry, Ångström Laboratory , Uppsala University , 75120 Uppsala , Sweden
- Institute of Physical Chemistry , Polish Academy of Sciences , 01-224 Warsaw , Poland
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37
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Progress in the Utilization Efficiency Improvement of Hot Carriers in Plasmon-Mediated Heterostructure Photocatalysis. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9102093] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The effect of plasmon-induced hot carriers (HCs) enables the possibility of applying semiconductors with wide band gaps to visible light catalysis, which becomes an emerging research field in environmental protections. Continued efforts have been made for an efficient heterostructure photocatalytic process with controllable behaviors of HCs. Recently, it has been discovered that the improvement of the utilization of HCs by band engineering is a promising strategy for an enhanced catalytic process, and relevant works have emerged for such a purpose. In this review, we give an overview of the recent progress relating to optimized methods for designing efficient photocatalysts by considering the intrinsic essence of HCs. First, the basic mechanism of the heterostructure photocatalytic process is discussed, including the formation of the Schokkty barrier and the process of photocatalysis. Then, the latest studies for improving the utilization efficiency of HCs in two aspects, the generation and extraction of HCs, are introduced. Based on this, the applications of such heterostructure photocatalysts, such as water/air treatments and organic transformations, are briefly illustrated. Finally, we conclude by discussing the remaining bottlenecks and future directions in this field.
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38
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Mao Z, Vang H, Garcia A, Tohti A, Stokes BJ, Nguyen SC. Carrier Diffusion—The Main Contribution to Size-Dependent Photocatalytic Activity of Colloidal Gold Nanoparticles. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00390] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ziliang Mao
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Hnubci Vang
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Anthony Garcia
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Anargul Tohti
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Benjamin J. Stokes
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Son C. Nguyen
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
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39
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Mueller NS, Vieira BGM, Höing D, Schulz F, Barros EB, Lange H, Reich S. Direct optical excitation of dark plasmons for hot electron generation. Faraday Discuss 2019; 214:159-173. [DOI: 10.1039/c8fd00149a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We demonstrate the excitation of dark modes and creation of hot electrons using linearly polarized light and scalable, cost-effective plasmonic surfaces.
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Affiliation(s)
| | - Bruno G. M. Vieira
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
- Departamento de Física
| | - Dominik Höing
- Institute of Physical Chemistry
- University of Hamburg
- 20146 Hamburg
- Germany
| | - Florian Schulz
- Institute of Physical Chemistry
- University of Hamburg
- 20146 Hamburg
- Germany
| | - Eduardo B. Barros
- Institute of Physical Chemistry
- University of Hamburg
- 20146 Hamburg
- Germany
| | - Holger Lange
- Institute of Physical Chemistry
- University of Hamburg
- 20146 Hamburg
- Germany
| | - Stephanie Reich
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
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40
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Zhang X, Huang C, Wang M, Huang P, He X, Wei Z. Transient localized surface plasmon induced by femtosecond interband excitation in gold nanoparticles. Sci Rep 2018; 8:10499. [PMID: 30002475 PMCID: PMC6043523 DOI: 10.1038/s41598-018-28909-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 06/29/2018] [Indexed: 11/18/2022] Open
Abstract
Localized surface plasmon resonance (LSPR) is essentially a collective oscillation of free electrons in nanostructured metals. Interband excitation may also produce conduction-band electrons above the Fermi level. However, a question here is whether these excited electrons can take part in plasmonic oscillation. To answer this question, femtosecond pump-probe measurements on gold nanoparticles were performed using interband excitation, where the pump pulse produced a large amount of electrons in the sp-conduction band and left holes in the d-band. Probing by transient absorption spectroscopy, we resolved an induced LSPR feature located at a red-shifted spectrum. This feature cannot be observed for a pumping photon energy lower than the threshold for interband transition. The commonly observed red-shift or broadening of LSPR spectrum due to electron-electron and electron-phonon scattering under strong optical excitation can be ruled out for understanding this feature by a comparison between the plasmonic dynamics at a pump above and below the interband-transition threshold. In particular, a “holding” time of about 1 ps was resolved for the interband-excitation-induced electrons to relax to the LSPR oscillation.
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Affiliation(s)
- Xinping Zhang
- Institute of Information Photonics Technology and College of Applied Sciences, Beijng University of Technology, Beijing, 100124, P. R. China.
| | - Cuiying Huang
- Institute of Information Photonics Technology and College of Applied Sciences, Beijng University of Technology, Beijing, 100124, P. R. China
| | - Meng Wang
- Institute of Information Photonics Technology and College of Applied Sciences, Beijng University of Technology, Beijing, 100124, P. R. China
| | - Pei Huang
- Institute of Physics, Beijing National Lab of Condensed Matter Physics, Chinese Academy of Science, Beijing, 100190, P. R. China
| | - Xinkui He
- Institute of Physics, Beijing National Lab of Condensed Matter Physics, Chinese Academy of Science, Beijing, 100190, P. R. China
| | - Zhiyi Wei
- Institute of Physics, Beijing National Lab of Condensed Matter Physics, Chinese Academy of Science, Beijing, 100190, P. R. China
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41
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McClure JP, Grew KN, Baker DR, Gobrogge E, Das N, Chu D. Harvesting resonantly-trapped light for small molecule oxidation reactions at the Au/α-Fe 2O 3 interface. NANOSCALE 2018; 10:7833-7850. [PMID: 29664495 DOI: 10.1039/c8nr01330f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Plasmonic metal nanoparticles (NPs) extend the overall light absorption of semiconductor materials. However, it is not well understood how coupling metal NPs to semiconductors alters the photo-electrochemical activity of small molecule oxidation (SMO) reactions. Different photo-anode electrodes comprised of Au NPs and α-Fe2O3 are designed to elucidate how the coupling plays not only a role in the water oxidation reaction (WO) but also performs for different SMO reactions. In this regard, Au NPs are inserted at specific regions within and/or on α-Fe2O3 layers created with a sequential electron beam evaporation method and multiple annealing treatments. The SMO and WO reactions are probed with broad-spectrum irradiation experiments with an emphasis on light-driven enhancements above and below the α-Fe2O3 band gap. Thin films of α-Fe2O3 supported on a gold back reflective layer resonantly-traps incident light leading to enhanced SMO/WO conversion efficiencies at high overpotential (η) for above band-gap excitations with no SMO activity observed at low η. In contrast, a substantial increase in the light-driven SMO activity is observed at low η, as well as for below band-gap excitations when sufficiently thin α-Fe2O3 films are decorated with Au NPs at the solution-electrode interface. The enhanced photo-catalytic activity is correlated with increased surface oxygen content (hydroxyl groups) at the Au/α-Fe2O3 interface, as well as simulated volume-integrated near-field enhancements over select regions of the Au/α-Fe2O3 interface providing an important platform for future SMO/WO photo-electrocatalyst development.
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Affiliation(s)
- Joshua P McClure
- U.S. Army Research Laboratory, Adelphi, MD, 2800 Powder Mill Road, Adelphi, MD 20783, USA.
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42
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Ghobadi TGU, Ghobadi A, Ozbay E, Karadas F. Strategies for Plasmonic Hot-Electron-Driven Photoelectrochemical Water Splitting. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201700165] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Turkan Gamze Ulusoy Ghobadi
- UNAM-National Nanotechnology Research Center; Bilkent University; Ankara 06800 Turkey
- Institute of Materials Science and Nanotechnology; Bilkent University; Ankara 06800 Turkey
- Department of Energy Engineering; Faculty of Engineering; Ankara University; Ankara 06830 Turkey
| | - Amir Ghobadi
- NANOTAM- Nanotechnology Research Center; Bilkent University; Ankara 06800 Turkey
- Department of Electrical and Electronics Engineering; Bilkent University; Ankara 06800 Turkey
| | - Ekmel Ozbay
- UNAM-National Nanotechnology Research Center; Bilkent University; Ankara 06800 Turkey
- NANOTAM- Nanotechnology Research Center; Bilkent University; Ankara 06800 Turkey
- Department of Electrical and Electronics Engineering; Bilkent University; Ankara 06800 Turkey
- Department of Physics; Bilkent University; Ankara 06800 Turkey
| | - Ferdi Karadas
- UNAM-National Nanotechnology Research Center; Bilkent University; Ankara 06800 Turkey
- Department of Chemistry; Bilkent University; Ankara 06800 Turkey
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43
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Zhou M, Zeng C, Song Y, Padelford JW, Wang G, Sfeir MY, Higaki T, Jin R. On the Non‐Metallicity of 2.2 nm Au
246
(SR)
80
Nanoclusters. Angew Chem Int Ed Engl 2017; 56:16257-16261. [DOI: 10.1002/anie.201709095] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Meng Zhou
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Chenjie Zeng
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Yongbo Song
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | | | - Gangli Wang
- Department of Chemistry Georgia State University Atlanta GA 30302 USA
| | - Matthew Y. Sfeir
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
| | - Tatsuya Higaki
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Rongchao Jin
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
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44
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Zhou M, Zeng C, Song Y, Padelford JW, Wang G, Sfeir MY, Higaki T, Jin R. On the Non‐Metallicity of 2.2 nm Au
246
(SR)
80
Nanoclusters. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709095] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Meng Zhou
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Chenjie Zeng
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Yongbo Song
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | | | - Gangli Wang
- Department of Chemistry Georgia State University Atlanta GA 30302 USA
| | - Matthew Y. Sfeir
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
| | - Tatsuya Higaki
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Rongchao Jin
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
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