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Nano-Impact Single-...
Nano-Impact Single-Entity Electrochemistry Enables Plasmon-Enhanced Electrocatalysis
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- Ganguli, Sagar (författare)
- Uppsala universitet,Molekylär biomimetik,Department of Chemistry—Ångström, Uppsala University, 75120, Uppsala, Sweden
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- Zhao, Ziwen (författare)
- Uppsala universitet,Molekylär biomimetik,Department of Chemistry—Ångström, Uppsala University, 75120, Uppsala, Sweden
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- Parlak, Onur (författare)
- KTH,Center for the Advancement of Integrated Medical and Engineering Sciences, AIMES,Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institute, 17176, Stockholm, Sweden,Karolinska Inst, Ctr Mol Med, Dept Med Solna, S-17176 Stockholm, Sweden.;Karolinska Inst, Ctr Advancement Integrated Med & Engn Sci, Stockholm, Sweden.;KTH Royal Inst Technol, S-17177 Stockholm, Sweden.
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- Hattori, Yocefu (författare)
- Uppsala universitet,Fysikalisk kemi,Department of Chemistry—Ångström, Uppsala University, 75120, Uppsala, Sweden
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- Sá, Jacinto (författare)
- Uppsala universitet,Fysikalisk kemi,Department of Chemistry—Ångström, Uppsala University, 75120, Uppsala, Sweden; Institute of Physical Chemistry, Polish Academy of Sciences, 01224, Warsaw, Poland
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- Sekretareva, Alina (författare)
- Uppsala universitet,Molekylär biomimetik,Department of Chemistry—Ångström, Uppsala University, 75120, Uppsala, Sweden
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(creator_code:org_t)
- Wiley-VCH Verlagsgesellschaft, 2023
- 2023
- Engelska.
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Ingår i: Angewandte Chemie International Edition. - : Wiley-VCH Verlagsgesellschaft. - 1433-7851 .- 1521-3773. ; 62:25
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Abstract
Ämnesord
Stäng
- Plasmon-enhanced electrocatalysis (PEEC), based on a combination of localized surface plasmon resonance excitation and an electrochemical bias applied to a plasmonic material, can result in improved electrical-to-chemical energy conversion compared to conventional electrocatalysis. Here, we demonstrate the advantages of nano-impact single-entity electrochemistry (SEE) for investigating the intrinsic activity of plasmonic catalysts at the single-particle level using glucose electrooxidation and oxygen reduction on gold nanoparticles as model reactions. We show that in conventional ensemble measurements, plasmonic effects have minimal impact on photocurrents. We suggest that this is due to the continuous equilibration of the Fermi level (EF) of the deposited gold nanoparticles with the EF of the working electrode, leading to fast neutralization of hot carriers by the measuring circuit. The photocurrents detected in the ensemble measurements are primarily caused by photo-induced heating of the supporting electrode material. In SEE, the EF of suspended gold nanoparticles is unaffected by the working electrode potential. As a result, plasmonic effects are the dominant source of photocurrents under SEE experimental conditions.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Collision Electrochemistry
- Glucose Oxidation
- Hot Charge Carrier
- Nano-Impacts
- Photoelectrochemistry
- Plasmonic Catalysis
- Chemistry with specialization in Physical Chemistry
- Kemi med inriktning mot fysikalisk kemi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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