Enhanced photoelectrochemical nitrogen reduction to ammonia by a plasmon-active Au grating decorated with the gC3N4@MoS2 heterosystem and plasmon-active nanoparticles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43930487" target="_blank" >RIV/60461373:22310/24:43930487 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21230/24:00377706

Result on the web

<a href="https://doi-org.ezproxy.vscht.cz/10.1039/D4TA03350G" target="_blank" >https://doi-org.ezproxy.vscht.cz/10.1039/D4TA03350G</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ta03350g" target="_blank" >10.1039/d4ta03350g</a>

Result language

angličtina

Original language name

Enhanced photoelectrochemical nitrogen reduction to ammonia by a plasmon-active Au grating decorated with the gC3N4@MoS2 heterosystem and plasmon-active nanoparticles

Original language description

The electrochemical production of ammonia from nitrogen (so-called nitrogen reduction reaction - NRR) is one of the key tasks of modern electrochemistry. The use of photo-electrochemical approaches in the NRR allows the involvement of renewable sunlight energy and partially reduces the energy demand of the NRR process and increases its efficiency. For efficient photoelectrochemical NRR realization, a rational design of the photoelectrode used is required. In this work, we propose the design, creation, and optimization of a hybrid electrode, based on utilization of coupled 2D semiconductors and plasmonic hot spots. In our approach, the gC3N4@MoS2 semiconductor (in the form of 2D flakes), with high catalytic activity towards the NRR is used as a redox-active material. For the involvement of sunlight energy, plasmon triggering is used in two modes: simple plasmonic triggering using a periodic Au grating and coupled plasmon triggering through the sandwiching of 2D gC3N4@MoS2 flakes between the Au grating and different plasmon active nanoparticles (gold and silver nanoparticles with different shapes). We also carried out a series of calculations (including finite difference time domain estimation of plasmon energy distribution and density functional calculation) aimed at the estimation of the local value of plasmon energy and the NRR process under conditions of plasmon triggering. As a result of careful design and photoelectrode optimization, we were able to achieve 882.1 μg h−1 mgcat−1 ammonia yield and 22.1% faradaic efficiency. The proposed photoelectrode design makes it possible to effectively use both the catalytic properties of the coupled semiconductors and the strengths of plasmon-assisted triggering. © 2024 The Royal Society of Chemistry.

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

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GA23-08509S" target="_blank" >GA23-08509S: Plasmon assistance in dual organic electrochemistry</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Volume of the periodical

12

Issue of the periodical within the volume

32

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

21310-21320

UT code for WoS article

001273715300001

EID of the result in the Scopus database

2-s2.0-85199431681