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

Result code in 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>

Alternative codes found

RIV/60461373:22340/25:43931873

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

ACS Applied Materials &amp; Interfaces

ISSN

1944-8244

e-ISSN

—

Volume of the periodical

17

Issue of the periodical within the volume

22

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

32553-32565

UT code for WoS article

001492759300001

EID of the result in the Scopus database

2-s2.0-105005808754