Observed Dramatically Improved Catalysis of Ag Shell on Au/Ag Core‐Shell Nanorods is Due to Silver Impurities Released During Etching Process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43916036" target="_blank" >RIV/60461373:22310/19:43916036 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/elan.201800668" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/elan.201800668</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/elan.201800668" target="_blank" >10.1002/elan.201800668</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Observed Dramatically Improved Catalysis of Ag Shell on Au/Ag Core‐Shell Nanorods is Due to Silver Impurities Released During Etching Process

Popis výsledku v původním jazyce

Core/shell bimetallic nanoparticles are highly popular in electrocatalysis; it is argued that the core metal enhances the catalytic properties of the shell. We have investigated the electrocatalytic properties of Au/Ag core‐shell nanorods (Au/Ag NRs) where Ag shell was thinned by aging in the presence of cetyltrimethylammonium bromide. We observed excellent electrocatalysis toward hydrogen peroxide electroreduction upon decreasing the Ag shell thickness, which would, at first, appear to imply a strong synergistic effect of the Au core with the Ag shell for electrocatalysis. We show, however, that this electrocatalysis is not caused by particular Au/Ag core/shell structures but rather by the presence of residual silver impurities in the form of Ag nanoparticles (Ag NPs) formed during the preparation of the thin‐layer silver shell/gold core nanorods.

Název v anglickém jazyce

Observed Dramatically Improved Catalysis of Ag Shell on Au/Ag Core‐Shell Nanorods is Due to Silver Impurities Released During Etching Process

Popis výsledku anglicky

Core/shell bimetallic nanoparticles are highly popular in electrocatalysis; it is argued that the core metal enhances the catalytic properties of the shell. We have investigated the electrocatalytic properties of Au/Ag core‐shell nanorods (Au/Ag NRs) where Ag shell was thinned by aging in the presence of cetyltrimethylammonium bromide. We observed excellent electrocatalysis toward hydrogen peroxide electroreduction upon decreasing the Ag shell thickness, which would, at first, appear to imply a strong synergistic effect of the Au core with the Ag shell for electrocatalysis. We show, however, that this electrocatalysis is not caused by particular Au/Ag core/shell structures but rather by the presence of residual silver impurities in the form of Ag nanoparticles (Ag NPs) formed during the preparation of the thin‐layer silver shell/gold core nanorods.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Electroanalysis

ISSN

1521-4109

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

1873-1877

Kód UT WoS článku

000491476600005

EID výsledku v databázi Scopus

2-s2.0-85073698751