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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68407700:21230/24:00377706

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA23-08509S" target="_blank" >GA23-08509S: Plasmonová asistence v duální organické elektrochemií</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Svazek periodika

12

Číslo periodika v rámci svazku

32

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

21310-21320

Kód UT WoS článku

001273715300001

EID výsledku v databázi Scopus

2-s2.0-85199431681