Crystal Structure‐ and Morphology‐Driven Electrochemistry of Iron Oxide Nanoparticles in Hydrogen Peroxide Detection

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73597721" target="_blank" >RIV/61989592:15310/19:73597721 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/admi.201801549" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/admi.201801549</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/admi.201801549" target="_blank" >10.1002/admi.201801549</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crystal Structure‐ and Morphology‐Driven Electrochemistry of Iron Oxide Nanoparticles in Hydrogen Peroxide Detection

Popis výsledku v původním jazyce

Various iron oxide nanoparticles with different morphologies are synthesized and subsequently tested for their conductivity and electrocatalytic activity toward hydrogen peroxide. The morphology and chemical and phase composition of iron oxide nanoparticles are evaluated employing scanning electron microscopy, X-ray diffraction, Fe-57 Mossbauer spectroscopy, and Brunauer-Emmett-Teller specific surface area measurements. The electrochemical properties of the as-prepared sensors are estimated by electrochemical impedance spectroscopy. It is found that alpha-Fe2O3 nanoparticles with the sticks morphology exhibit the best conductivity response among all the tested phases and morphologies. Moreover, it is predicted that conductivity of different iron oxides can be connected with a number of vacancies in their crystal structure. Furthermore, the influence of surface area and porosity of the material on the conductivity can be omitted. Finally, the electrocatalytic activity of iron oxide nanoparticles toward hydrogen peroxide is confirmed by means of cyclic voltammetry. The obtained results perfectly reflect those derived from electrochemical impedance spectroscopy and indicate that glassy carbon electrodes modified with the sticks morphology of alpha-Fe2O3 hold a huge potential for hydrogen peroxide detection.

Název v anglickém jazyce

Crystal Structure‐ and Morphology‐Driven Electrochemistry of Iron Oxide Nanoparticles in Hydrogen Peroxide Detection

Popis výsledku anglicky

Various iron oxide nanoparticles with different morphologies are synthesized and subsequently tested for their conductivity and electrocatalytic activity toward hydrogen peroxide. The morphology and chemical and phase composition of iron oxide nanoparticles are evaluated employing scanning electron microscopy, X-ray diffraction, Fe-57 Mossbauer spectroscopy, and Brunauer-Emmett-Teller specific surface area measurements. The electrochemical properties of the as-prepared sensors are estimated by electrochemical impedance spectroscopy. It is found that alpha-Fe2O3 nanoparticles with the sticks morphology exhibit the best conductivity response among all the tested phases and morphologies. Moreover, it is predicted that conductivity of different iron oxides can be connected with a number of vacancies in their crystal structure. Furthermore, the influence of surface area and porosity of the material on the conductivity can be omitted. Finally, the electrocatalytic activity of iron oxide nanoparticles toward hydrogen peroxide is confirmed by means of cyclic voltammetry. The obtained results perfectly reflect those derived from electrochemical impedance spectroscopy and indicate that glassy carbon electrodes modified with the sticks morphology of alpha-Fe2O3 hold a huge potential for hydrogen peroxide detection.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LO1305" target="_blank" >LO1305: Rozvoj centra pokročilých technologií a materiálů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

"1801549-1"-"1801549-8"

Kód UT WoS článku

000458309700011

EID výsledku v databázi Scopus

2-s2.0-85058240379