Light Entrapment by Plasmonic Chiral Lock for Enhancement of 2D Flakes Catalytic Activity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43931873" target="_blank" >RIV/60461373:22310/25:43931873 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/25:43931873

Výsledek na webu

<a href="https://pubs-acs-org.ezproxy.vscht.cz/doi/10.1021/acsami.5c08060" target="_blank" >https://pubs-acs-org.ezproxy.vscht.cz/doi/10.1021/acsami.5c08060</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.5c08060" target="_blank" >10.1021/acsami.5c08060</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Light Entrapment by Plasmonic Chiral Lock for Enhancement of 2D Flakes Catalytic Activity

Popis výsledku v původním jazyce

Plasmon-based triggering leads to an effective increase of material catalytic activity in a number of relevant photoelectrochemical transformations, including nitrogen reduction for the production of ammonia. The efficiency of the plasmon assistance can be significantly increased through the rational design of hybrid photoelectrodes, e.g., by placing a redox-active material at plasmonic hot spots that may arise between two coupled nanostructures. In this work, we describe the creation and utilization of chiral plasmon-active hybrid structures (based on the so-called gold helicoids) coupled with redox-active 2H-MoS2. The chiral plasmon-active gold nanoparticles (with the same or opposite chirality) were spatially separated by thin two-dimensional (2D) flakes to reach mutual plasmon coupling between them. Using numerical simulations and SERS measurements, the dependence of the local enhancement of the electric field (EF) inside the created plasmon-active diastereomer consisting of Au helicoid-2D MoS2-Au helicoid “sandwich structure”, on the mutual chirality of the nanoparticles is demonstrated. It is found that the plasmon energy is more efficiently “concentrated” in the MoS2 space using the “chiral trap” of light energy (i.e., chiral plasmonic lock), even in the case where the chiral handedness of Au nanoparticles is matching. The created hybrid structures were subsequently used for nitrogen reduction and ammonia production proceeding on the MoS2 surface. A clear dependence of the catalytic activity of MoS2 on the matching or mismatching of Au helicoid chiralities (and related local value of EF) is observed. In particular, a two-time increase in the ammonia yield is obtained in the case of matching chirality, compared to that in the case of mismatched configuration or the control experiments performed with nonchiral Au nanocubes. Hence, the utilization of chiral plasmonic nanoparticles and their dimers (or multimers) provides an additional opportunity for even more effective photosensibilization of redox-active materials. © 2025 The Authors. Published by American Chemical Society.

Název v anglickém jazyce

Light Entrapment by Plasmonic Chiral Lock for Enhancement of 2D Flakes Catalytic Activity

Popis výsledku anglicky

Plasmon-based triggering leads to an effective increase of material catalytic activity in a number of relevant photoelectrochemical transformations, including nitrogen reduction for the production of ammonia. The efficiency of the plasmon assistance can be significantly increased through the rational design of hybrid photoelectrodes, e.g., by placing a redox-active material at plasmonic hot spots that may arise between two coupled nanostructures. In this work, we describe the creation and utilization of chiral plasmon-active hybrid structures (based on the so-called gold helicoids) coupled with redox-active 2H-MoS2. The chiral plasmon-active gold nanoparticles (with the same or opposite chirality) were spatially separated by thin two-dimensional (2D) flakes to reach mutual plasmon coupling between them. Using numerical simulations and SERS measurements, the dependence of the local enhancement of the electric field (EF) inside the created plasmon-active diastereomer consisting of Au helicoid-2D MoS2-Au helicoid “sandwich structure”, on the mutual chirality of the nanoparticles is demonstrated. It is found that the plasmon energy is more efficiently “concentrated” in the MoS2 space using the “chiral trap” of light energy (i.e., chiral plasmonic lock), even in the case where the chiral handedness of Au nanoparticles is matching. The created hybrid structures were subsequently used for nitrogen reduction and ammonia production proceeding on the MoS2 surface. A clear dependence of the catalytic activity of MoS2 on the matching or mismatching of Au helicoid chiralities (and related local value of EF) is observed. In particular, a two-time increase in the ammonia yield is obtained in the case of matching chirality, compared to that in the case of mismatched configuration or the control experiments performed with nonchiral Au nanocubes. Hence, the utilization of chiral plasmonic nanoparticles and their dimers (or multimers) provides an additional opportunity for even more effective photosensibilization of redox-active materials. © 2025 The Authors. Published by American Chemical Society.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Applied Materials &amp; Interfaces

ISSN

1944-8244

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

32553-32565

Kód UT WoS článku

001492759300001

EID výsledku v databázi Scopus

2-s2.0-105005808754