51
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Yang CP, Liu YC. Therapeutics for Inflammatory-Related Diseases Based on Plasmon-Activated Water: A Review. Int J Mol Sci 2018; 19:E1589. [PMID: 29843406 PMCID: PMC6032129 DOI: 10.3390/ijms19061589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/22/2018] [Accepted: 05/22/2018] [Indexed: 12/18/2022] Open
Abstract
It is recognized that the properties of liquid water can be markedly different from those of bulk one when it is in contact with hydrophobic surfaces or is confined in nano-environments. Because our knowledge regarding water structure on the molecular level of dynamic equilibrium within a picosecond time scale is far from completeness all of water's conventionally known properties are based on inert "bulk liquid water" with a tetrahedral hydrogen-bonded structure. Actually, the strength of water's hydrogen bonds (HBs) decides its properties and activities. In this review, an innovative idea on preparation of metastable plasmon-activated water (PAW) with intrinsically reduced HBs, by letting deionized (DI) water flow through gold-supported nanoparticles (AuNPs) under resonant illumination at room temperature, is reported. Compared to DI water, the created stable PAW can scavenge free hydroxyl and 2,2-diphenyl-1-picrylhydrazyl radicals and effectively reduce NO release from lipopolysaccharide-induced inflammatory cells. Moreover, PAW can dramatically induce a major antioxidative Nrf2 gene in human gingival fibroblasts. This further confirms its cellular antioxidative and anti-inflammatory properties. In addition, innovatively therapeutic strategy of daily drinking PAW on inflammatory-related diseases based on animal disease models is demonstrated, examples being chronic kidney disease (CKD), chronic sleep deprivation (CSD), and lung cancer.
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Affiliation(s)
- Chih-Ping Yang
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing St., Taipei 11031, Taiwan.
| | - Yu-Chuan Liu
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing St., Taipei 11031, Taiwan.
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52
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Lee H, Nedrygailov II, Lee SW, Park JY. Isotope Effect of Hot Electrons Generated on Pt Nanoparticle Surfaces Under H2 and D2 Oxidation. Top Catal 2018. [DOI: 10.1007/s11244-018-0947-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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53
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Innovatively Therapeutic Strategy on Lung Cancer by Daily Drinking Antioxidative Plasmon-Induced Activated Water. Sci Rep 2018; 8:6316. [PMID: 29679033 PMCID: PMC5910416 DOI: 10.1038/s41598-018-24752-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 03/13/2018] [Indexed: 01/22/2023] Open
Abstract
Many human diseases are inflammation-related, such as cancer and those
associated with aging. Previous studies demonstrated that plasmon-induced activated
(PIA) water with electron-doping character, created from hot electron transfer via
decay of excited Au nanoparticles (NPs) under resonant illumination, owns reduced
hydrogen-bonded networks and physchemically antioxidative properties. In this study,
it is demonstrated PIA water dramatically induced a major antioxidative Nrf2 gene in human gingival fibroblasts which further
confirms its cellular antioxidative and anti-inflammatory properties. Furthermore,
mice implanted with mouse Lewis lung carcinoma (LLC-1) cells drinking PIA water
alone or together with cisplatin treatment showed improved survival time compared to
mice which consumed only deionized (DI) water. With the combination of PIA water and
cisplatin administration, the survival time of LLC-1-implanted mice markedly
increased to 8.01 ± 0.77 days compared to 6.38 ± 0.61 days of mice given cisplatin
and normal drinking DI water. This survival time of 8.01 ± 0.77 days compared to
4.62 ± 0.71 days of mice just given normal drinking water is statistically
significant (p = 0.009). Also, the gross
observations and eosin staining results suggested that LLC-1-implanted mice drinking
PIA water tended to exhibit less metastasis than mice given only DI water.
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54
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Hot electron flux at solid–liquid interfaces probed with Pt/Si catalytic nanodiodes: Effects of pH during decomposition of hydrogen peroxide. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.09.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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55
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Lin W, Cao E, Zhang L, Xu X, Song Y, Liang W, Sun M. Electrically enhanced hot hole driven oxidation catalysis at the interface of a plasmon-exciton hybrid. NANOSCALE 2018; 10:5482-5488. [PMID: 29511748 DOI: 10.1039/c7nr08878g] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, an electro-optical device based on a graphene-Ag nanoparticle hybrid is fabricated as the substrate of graphene mediated surface enhanced Raman scattering (G-SERS) manipulated by the gate and bias voltages. Plasmon-exciton coupling promotes co-driven surface catalytic reactions, where the density of states (DOS) of holes and electrons on graphene is well controlled by the gate voltage, and the kinetic energy of holes and electrons is driven by the bias voltage (or current). Our experimental results reveal that the hot holes on graphene mainly contribute to plasmon-exciton co-driven oxidation reactions. The contribution of hot electrons to oxidation reactions is less important. Our novel electro-optical device can be potentially applied in controlling plasmon-exciton co-driven oxidation or reduction reactions by tuning the gate and bias voltages.
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Affiliation(s)
- Weihua Lin
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China. and Beijing National Laboratory for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - En Cao
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China. and Beijing National Laboratory for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China and School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Liqiang Zhang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Changping 102249, People's Republic of China
| | - Xuefeng Xu
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China.
| | - Yuzhi Song
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Wenjie Liang
- Beijing National Laboratory for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Mengtao Sun
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China. and Beijing National Laboratory for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
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56
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Lee SW, Song JT, Kim J, Oh J, Park JY. Enhanced catalytic activity for CO oxidation by the metal-oxide perimeter of TiO 2/nanostructured Au inverse catalysts. NANOSCALE 2018; 10:3911-3917. [PMID: 29423473 DOI: 10.1039/c7nr08168e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report the effect of metal-oxide interfaces on CO oxidation catalytic activity with inverse TiO2-nanostructured Au catalysts. The inverse nanocatalysts were prepared by depositing TiO2via the liquid-phase immersion method on electrochemically synthesized Au nanostructure supports. The catalytic performance for CO oxidation was investigated using various amounts of Ti (i.e. 0.1-1.0 wt%) on two different morphologies of Au nanostructures (i.e. nanoporous and nanorod). In comparing the different Au morphologies, we found an overall higher TOF and lower activation energy for the TiO2/nanoporous Au than those for the TiO2/nanorod Au. In addition, the CO oxidation activity increased as the Ti content increased up to 0.5 wt% probably due to active TiO2-Au interface sites enhancing CO oxidation via the supply of adsorption sites or charge transfer from TiO2 to Au. However, a higher titania content (i.e. 1.0 wt% TiO2) resulted in decreased activity caused by high surface coverage of TiO2 decreasing the number of TiO2-Au interface sites. These results implied that the perimeter area of the metal-oxide interface played a significant role in determining the catalytic performance for CO oxidation.
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Affiliation(s)
- Si Woo Lee
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.
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57
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Ge A, Rudshteyn B, Zhu J, Maurer RJ, Batista VS, Lian T. Electron-Hole-Pair-Induced Vibrational Energy Relaxation of Rhenium Catalysts on Gold Surfaces. J Phys Chem Lett 2018; 9:406-412. [PMID: 29227669 DOI: 10.1021/acs.jpclett.7b02885] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A combination of time-resolved vibrational spectroscopy and density functional theory techniques have been applied to study the vibrational energy relaxation dynamics of the Re(4,4'-dicyano-2,2'-bipyridine)(CO)3Cl (Re(CO)3Cl) catalyst for CO2 to CO conversion bound to gold surfaces. The kinetics of vibrational relaxation exhibits a biexponential decay including an ultrafast initial relaxation and complete recovery of the ground vibrational state. Ab initio molecular dynamics simulations and time-dependent perturbation theory reveal the former to be due to vibrational population exchange between CO stretching modes and the latter to be a combination of intramolecular vibrational relaxation (IVR) and electron-hole pair (EHP)-induced energy transfer into the gold substrate. EHP-induced energy transfer from the Re(CO)3Cl adsorbate into the gold surface occurs on the same time scale as IVR of Re(CO)3Cl in aprotic solvents. Therefore, it is expected to be particularly relevant to understanding the reduced catalytic activity of the homogeneous catalyst when anchored to a metal surface.
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Affiliation(s)
- Aimin Ge
- Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States
| | - Benjamin Rudshteyn
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
- Yale Energy Sciences Institute, Yale University , West Haven, Connecticut 06516, United States
| | - Jingyi Zhu
- Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States
| | - Reinhard J Maurer
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
- Department of Chemistry, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Victor S Batista
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
- Yale Energy Sciences Institute, Yale University , West Haven, Connecticut 06516, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States
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58
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Goddeti KC, Lee H, Jeon B, Park JY. Enhancing hot electron collection with nanotube-based three-dimensional catalytic nanodiode under hydrogen oxidation. Chem Commun (Camb) 2018; 54:8968-8971. [DOI: 10.1039/c8cc04288h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel three-dimensional catalytic nanodiode composed of a Pt thin film on TiO2 nanotubes was designed for the efficient detection of the flux of hot electrons, or chemicurrent, under hydrogen oxidation.
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Affiliation(s)
- Kalyan C. Goddeti
- Center for Nanomaterials and Chemical Reactions
- Institute for Basic Science (IBS)
- Daejeon 34141
- Republic of Korea
| | - Hyosun Lee
- Center for Nanomaterials and Chemical Reactions
- Institute for Basic Science (IBS)
- Daejeon 34141
- Republic of Korea
| | - Beomjoon Jeon
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | - Jeong Young Park
- Center for Nanomaterials and Chemical Reactions
- Institute for Basic Science (IBS)
- Daejeon 34141
- Republic of Korea
- Graduate School of EEWS
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59
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Lin W, Cao Y, Wang P, Sun M. Unified Treatment for Plasmon-Exciton Co-driven Reduction and Oxidation Reactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12102-12107. [PMID: 29048897 DOI: 10.1021/acs.langmuir.7b03144] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Revealing the nature of plasmon-exciton co-driven surface catalytic reactions is important and urgent for developing potential applications in energy and environmental science. In this work, we propose a mechanism for plasmon-exciton co-driven surface catalytic reactions based on our experimental results. We provide a method for a unified treatment for reduction and oxidation reactions, which not only strongly supports our proposed mechanism but also promotes a deeper understanding of plasmon-exciton co-driven surface catalytic reactions.
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Affiliation(s)
- Weihua Lin
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing , Beijing, 100083, People's Republic of China
| | - Yaqian Cao
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Center for Condensed Matter Physics, Department of Physics, Capital Normal University , Beijing 100048, People's Republic of China
| | - Peijie Wang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Center for Condensed Matter Physics, Department of Physics, Capital Normal University , Beijing 100048, People's Republic of China
| | - Mengtao Sun
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing , Beijing, 100083, People's Republic of China
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60
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Sprague-Klein EA, McAnally MO, Zhdanov DV, Zrimsek AB, Apkarian VA, Seideman T, Schatz GC, Van Duyne RP. Observation of Single Molecule Plasmon-Driven Electron Transfer in Isotopically Edited 4,4′-Bipyridine Gold Nanosphere Oligomers. J Am Chem Soc 2017; 139:15212-15221. [DOI: 10.1021/jacs.7b08868] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | | | | | | | - Vartkess A. Apkarian
- Department of Chemistry, University of California, Irvine, California 92697, United States
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61
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Kim SM, Lee C, Goddeti KC, Park JY. Hot plasmonic electron-driven catalytic reactions on patterned metal-insulator-metal nanostructures. NANOSCALE 2017; 9:11667-11677. [PMID: 28776052 DOI: 10.1039/c7nr02805a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The smart design of plasmonic nanostructures offers a unique capability for the efficient conversion of solar energy into chemical energy by strong interactions with resonant photons through the excitation of surface plasmon resonance, which increases the prospect of using sunlight in environmental and energy applications. Here, we show that the catalytic activity of CO oxidation can be tuned by using new model systems: two-dimensional (2D) arrays of metal-insulator-metal (MIM) plasmonic nanoislands designed to efficiently shuttle hot plasmonic electrons. Hot plasmonic electrons are generated upon the absorption of photons on noble metals, followed by the injection of these hot electrons into the Pt nanoparticles through tunneling or Schottky emission mechanisms, depending on the energy of the hot electrons. We found that these MIM nanostructures exhibit higher catalytic activity (i.e. by 40-110%) under light irradiation, revealing a significant impact on the catalytic activity for CO oxidation. The thickness dependence of the enhancement of catalytic activity on the oxide layers is consistent with the tunneling mechanism of hot electron flows. The results imply that surface plasmon-induced hot electron flows by light absorption significantly influence the catalytic activity of CO oxidation.
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Affiliation(s)
- Sun Mi Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, Republic of Korea.
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62
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Maurer RJ, Jiang B, Guo H, Tully JC. Mode Specific Electronic Friction in Dissociative Chemisorption on Metal Surfaces: H_{2} on Ag(111). PHYSICAL REVIEW LETTERS 2017; 118:256001. [PMID: 28696728 DOI: 10.1103/physrevlett.118.256001] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Indexed: 05/11/2023]
Abstract
Electronic friction and the ensuing nonadiabatic energy loss play an important role in chemical reaction dynamics at metal surfaces. Using molecular dynamics with electronic friction evaluated on the fly from density functional theory, we find strong mode dependence and a dominance of nonadiabatic energy loss along the bond stretch coordinate for scattering and dissociative chemisorption of H_{2} on the Ag(111) surface. Exemplary trajectories with varying initial conditions indicate that this mode specificity translates into modulated energy loss during a dissociative chemisorption event. Despite minor nonadiabatic energy loss of about 5%, the directionality of friction forces induces dynamical steering that affects individual reaction outcomes, specifically for low-incidence energies and vibrationally excited molecules. Mode-specific friction induces enhanced loss of rovibrational rather than translational energy and will be most visible in its effect on final energy distributions in molecular scattering experiments.
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Affiliation(s)
- Reinhard J Maurer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA
| | - Bin Jiang
- Department of Chemical Physics, University of Science & Technology of China, Hefei, Anhui 230026, China
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - John C Tully
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA
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63
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Park JY, Lee SW, Lee C, Lee H. Strategies for Hot Electron-Mediated Catalytic Reactions: Catalytronics. Catal Letters 2017. [DOI: 10.1007/s10562-017-2092-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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64
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Zilio P, Dipalo M, Tantussi F, Messina GC, de Angelis F. Hot electrons in water: injection and ponderomotive acceleration by means of plasmonic nanoelectrodes. LIGHT, SCIENCE & APPLICATIONS 2017; 6:e17002. [PMID: 30167264 PMCID: PMC6062236 DOI: 10.1038/lsa.2017.2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 01/10/2017] [Accepted: 01/16/2017] [Indexed: 05/19/2023]
Abstract
We present a theoretical and experimental study of a plasmonic nanoelectrode architecture that is able to inject bunches of hot electrons into an aqueous environment. In this approach, electrons are accelerated in water by ponderomotive forces up to energies capable of exciting or ionizing water molecules. This ability is enabled by the nanoelectrode structure (extruding out of a metal baseplate), which allows for the production of an intense plasmonic hot spot at the apex of the structure while maintaining the electrical connection to a virtually unlimited charge reservoir. The electron injection is experimentally monitored by recording the current transmitted through the water medium, whereas the electron acceleration is confirmed by observation of the bubble generation for a laser power exceeding a proper threshold. An understanding of the complex physics involved is obtained via a numerical approach that explicitly models the electromagnetic hot spot generation, electron-by-electron injection via multiphoton absorption, acceleration by ponderomotive forces and electron-water interaction through random elastic and inelastic scattering. The model predicts a critical electron density for bubble nucleation that nicely matches the experimental findings and reveals that the efficiency of energy transfer from the plasmonic hot spot to the free electron cloud is much more efficient (17 times higher) in water than in a vacuum. Because of their high kinetic energy and large reduction potential, these proposed wet hot electrons may provide new opportunities in photocatalysis, electrochemical processes and hot-electron driven chemistry.
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65
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Lee SW, Lee C, Goddeti KC, Kim SM, Park JY. Surface plasmon-driven catalytic reactions on a patterned Co3O4/Au inverse catalyst. RSC Adv 2017. [DOI: 10.1039/c7ra10450b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Hot carriers generated from LSPR excitation of Au can transfer to Co3O4, thus enhancing the catalytic activity for CO oxidation.
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Affiliation(s)
- Si Woo Lee
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
- Center for Nanomaterials and Chemical Reactions
| | - Changhwan Lee
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
- Center for Nanomaterials and Chemical Reactions
| | - Kalyan C. Goddeti
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
- Center for Nanomaterials and Chemical Reactions
| | - Sun Mi Kim
- Center for Nanomaterials and Chemical Reactions
- Institute for Basic Science
- Daejeon
- Republic of Korea
| | - Jeong Young Park
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
- Center for Nanomaterials and Chemical Reactions
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66
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Ray NJ, Karpov EG. Hydrogen Oxidation-Mediated Current Discharge in Mesoporous Pt/TiO 2 Nanocomposite. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32077-32082. [PMID: 27933966 DOI: 10.1021/acsami.6b11794] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Here we report on direct evidence of a correlation between hydrogen-to-water oxidation on mesoporous Pt/TiO2 nanocomposites at room temperature and the conversion of surface-released chemical energy into a stationary electrical current. The Pt phase of this heterojunction device is an electrically continuous 15 nm thick mesh deposited onto a mesoporous TiO2 substrate fabricated with a plasma electrolytic oxidation process. The H2O turnover frequency approaches an asymptotic value associated with the saturation of the Pt/TiO2 interface as the concentration of hydrogen gas is increased. In situ measurements of the reaction-induced current concurrently with mass spectrometry measurements illuminate the polarity switch of the reaction current (from thermionic emission to a reverse steady-state flow) simultaneously with the production of water. Furthermore, a concentration-dependent value of 5 min is measured as the time constant for the adsorption of the initial addition of H2 and H2O formation and desorption.
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Affiliation(s)
- Nathan J Ray
- Department of Civil and Materials Engineering, University of Illinois at Chicago , Chicago, Illinois 60607, United States
| | - Eduard G Karpov
- Department of Civil and Materials Engineering, University of Illinois at Chicago , Chicago, Illinois 60607, United States
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67
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Nedrygailov II, Lee C, Moon SY, Lee H, Park JY. Liquid-phase catalytic reactor combined with measurement of hot electron flux and chemiluminescence. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:114101. [PMID: 27910578 DOI: 10.1063/1.4967529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Understanding the role of electronically nonadiabatic interactions during chemical reactions on metal surfaces in liquid media is of great importance for a variety of applications including catalysis, electrochemistry, and environmental science. Here, we report the design of an experimental apparatus for detection of the highly excited (hot) electrons created as a result of nonadiabatic energy transfer during the catalytic decomposition of hydrogen peroxide on thin-film metal-semiconductor nanodiodes. The apparatus enables the measurement of hot electron flows and related phenomena (e.g., surface chemiluminescence) as well as the corresponding reaction rates at different temperatures. The products of the chemical reaction can be characterized in the gaseous phase by means of gas chromatography. The combined measurement of hot electron flux, catalytic activity, and light emission can lead to a fundamental understanding of the elementary processes occurring during the heterogeneous catalytic reaction.
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Affiliation(s)
- Ievgen I Nedrygailov
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, South Korea
| | - Changhwan Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, South Korea
| | - Song Yi Moon
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, South Korea
| | - Hyosun Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, South Korea
| | - Jeong Young Park
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, South Korea
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68
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Kim SM, Lee SW, Moon SY, Park JY. The effect of hot electrons and surface plasmons on heterogeneous catalysis. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:254002. [PMID: 27166263 DOI: 10.1088/0953-8984/28/25/254002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hot electrons and surface-plasmon-driven chemistry are amongst the most actively studied research subjects because they are deeply associated with energy dissipation and the conversion processes at the surface and interfaces, which are still open questions and key issues in the surface science community. In this topical review, we give an overview of the concept of hot electrons or surface-plasmon-mediated hot electrons generated under various structural schemes (i.e. metals, metal-semiconductor, and metal-insulator-metal) and their role affecting catalytic activity in chemical reactions. We highlight recent studies on the relation between hot electrons and catalytic activity on metallic surfaces. We discuss possible mechanisms for how hot electrons participate in chemical reactions. We also introduce controlled chemistry to describe specific pathways for selectivity control in catalysis on metal nanoparticles.
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Affiliation(s)
- Sun Mi Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, Korea. Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
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69
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Lee YK, Lee H, Lee C, Hwang E, Park JY. Hot-electron-based solar energy conversion with metal-semiconductor nanodiodes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:254006. [PMID: 27168177 DOI: 10.1088/0953-8984/28/25/254006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Energy dissipation at metal surfaces or interfaces between a metal and a dielectric generally results from elementary excitations, including phonons and electronic excitation, once external energy is deposited to the surface/interface during exothermic chemical processes or an electromagnetic wave incident. In this paper, we outline recent research activities to develop energy conversion devices based on hot electrons. We found that photon energy can be directly converted to hot electrons and that hot electrons flow through the interface of metal-semiconductor nanodiodes where a Schottky barrier is formed and the energy barrier is much lower than the work function of the metal. The detection of hot electron flow can be successfully measured using the photocurrent; we measured the photoyield of photoemission with incident photons-to-current conversion efficiency (IPCE). We also show that surface plasmons (i.e. the collective oscillation of conduction band electrons induced by interaction with an electromagnetic field) are excited on a rough metal surface and subsequently decay into secondary electrons, which gives rise to enhancement of the IPCE. Furthermore, the unique optical behavior of surface plasmons can be coupled with dye molecules, suggesting the possibility for producing additional channels for hot electron generation.
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Affiliation(s)
- Young Keun Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, Korea. Graduate School of EEWS, KAIST, Daejeon 305-701, Korea
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70
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Zhang Z, Xu P, Yang X, Liang W, Sun M. Surface plasmon-driven photocatalysis in ambient, aqueous and high-vacuum monitored by SERS and TERS. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2016. [DOI: 10.1016/j.jphotochemrev.2016.04.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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71
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Chu J, Miao P, Han X, Du Y, Wang X, Song B, Xu P. Ultrafast Surface-Plasmon-Induced Photodimerization ofp-Aminothiophenol on Ag/TiO2Nanoarrays. ChemCatChem 2016. [DOI: 10.1002/cctc.201600172] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiayu Chu
- School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 P.R. China
| | - Peng Miao
- School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 P.R. China
| | - Xijiang Han
- School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 P.R. China
| | - Yunchen Du
- School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 P.R. China
| | - Xianjie Wang
- Department of Physics; Harbin Institute of Technology; Harbin 150001 P.R. China
| | - Bo Song
- Academy of Fundamental and Interdisciplinary Sciences; Harbin Institute of Technology; Harbin 150001 P.R. China
| | - Ping Xu
- School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 P.R. China
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72
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Lee H, Nedrygailov II, Lee YK, Lee C, Choi H, Choi JS, Choi CG, Park JY. Graphene-Semiconductor Catalytic Nanodiodes for Quantitative Detection of Hot Electrons Induced by a Chemical Reaction. NANO LETTERS 2016; 16:1650-1656. [PMID: 26910271 DOI: 10.1021/acs.nanolett.5b04506] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Direct detection of hot electrons generated by exothermic surface reactions on nanocatalysts is an effective strategy to obtain insight into electronic excitation during chemical reactions. For this purpose, we fabricated a novel catalytic nanodiode based on a Schottky junction between a single layer of graphene and an n-type TiO2 layer that enables the detection of hot electron flows produced by hydrogen oxidation on Pt nanoparticles. By making a comparative analysis of data obtained from measuring the hot electron current (chemicurrent) and turnover frequency, we demonstrate that graphene's unique electronic structure and extraordinary material properties, including its atomically thin nature and ballistic electron transport, allow improved conductivity at the interface between the catalytic Pt nanoparticles and the support. Thereby, graphene-based nanodiodes offer an effective and facile way to approach the study of chemical energy conversion mechanisms in composite catalysts with carbon-based supports.
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Affiliation(s)
- Hyosun Lee
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS) , Daejeon 34141, Republic of Korea
| | - Ievgen I Nedrygailov
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS) , Daejeon 34141, Republic of Korea
| | - Young Keun Lee
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS) , Daejeon 34141, Republic of Korea
| | - Changhwan Lee
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS) , Daejeon 34141, Republic of Korea
| | - Hongkyw Choi
- Creative Research Center for Graphene Electronics, Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129, Republic of Korea
| | - Jin Sik Choi
- Creative Research Center for Graphene Electronics, Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129, Republic of Korea
| | - Choon-Gi Choi
- Creative Research Center for Graphene Electronics, Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129, Republic of Korea
| | - Jeong Young Park
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS) , Daejeon 34141, Republic of Korea
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73
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Selective plasmon-driven catalysis for para-nitroaniline in aqueous environments. Sci Rep 2016; 6:20458. [PMID: 26857259 PMCID: PMC4746588 DOI: 10.1038/srep20458] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 12/22/2015] [Indexed: 12/17/2022] Open
Abstract
The plasmon-driven oxidation of amine (-NH2) groups and the reduction of nitro (-NO2) groups on a nanostructured metal surface in an aqueous environment have been reported experimentally and theoretically. The question of which process occurs first in the aqueous environment is an interesting question in the field of plasmon-related photochemistry. Para-nitroaniline (PNA), with both nitro (-NO2) and amine (-NH2) groups, is the best candidate for studying the priority of the plasmon-driven oxidation and the reduction reactions in an aqueous environment. Using surface-enhanced Raman scattering (SERS) spectroscopy, our experimental results and theoretical simulations reveal that PNA is selectively catalyzed to 4,4'-diaminoazobenzene (DAAB) through the plasmon-assisted dimerization of the nitro (-NO2) group into an azo group in an aqueous environment. This indicates that the plasmon-driven reduction of the nitro (-NO2) group clearly occurs before the oxidation of the amine (-NH2) group in an aqueous environment. The plasmon-driven reduction of PNA to DAAB is a selective surface catalytic reduced reaction in aqueous environment.
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74
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Nedrygailov II, Park JY. The nature of hot electrons generated by exothermic catalytic reactions. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.12.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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75
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Ray NJ, Hashemian MA, Karpov EG. A Stationary Reaction Current Effect in Mesoporous Pt/ZrO2 System Under H2/O2 Environment. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27749-27754. [PMID: 26630253 DOI: 10.1021/acsami.5b08814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
There have been many works analyzing thermionic currents and chemicurrents generated on various electrolyte-free metal/semiconductor nanostructures. More recently, the chemicurrent phenomenon was reported for mesoporous Pt/semiconductor systems adept at converting surface-released chemical energy into a stationary electrical signal at room-temperature conditions. The present work points out the existence of an entire class of such surface-driven functional nanosystems. Here, the reaction current generation of Pt/ZrO2 systems was studied at room temperature under exposure to oxyhydrogen environments for mesoporous zirconia; this nanostructure was capable of the continuous oxidation of hydrogen, producing a long-standing stationary current. Synthesis parameters during the anodization process were manipulated to control sample pore density and the average pore diameter. Deposited via wide-angle PVD sputtering, the Pt phase forms an electrically continuous topographical nanomesh layer, and thus the Pt/ZrO2/gas interface is regulated through the manipulation of zirconia porosity. We observed reaction current enhancements with increasing porosity due to the lengthening of the Pt/ZrO2 interface. The most porous sample was significantly more sensitive to initial hydrogen additions, pointing toward the spillover of positive ionic charge across the Pt/ZrO2 interface as the origin of the observed electromotive force.
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Affiliation(s)
- Nathan J Ray
- University of Illinois at Chicago , Chicago, Illinois 60607, United States
| | | | - Eduard G Karpov
- University of Illinois at Chicago , Chicago, Illinois 60607, United States
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76
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Hot Electron Surface Chemistry at Oxide–Metal Interfaces: Foundation of Acid-base Catalysis. Catal Letters 2015. [DOI: 10.1007/s10562-015-1657-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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