Single Co-Atoms as Electrocatalysts for Efficient Hydrazine Oxidation Reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10247752" target="_blank" >RIV/61989100:27640/21:10247752 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15640/21:73607367

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/smll.202006477" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/smll.202006477</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/smll.202006477" target="_blank" >10.1002/smll.202006477</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Single Co-Atoms as Electrocatalysts for Efficient Hydrazine Oxidation Reaction

Popis výsledku v původním jazyce

Single-atom catalysts (SACs) have aroused great attention due to their high atom efficiency and unprecedented catalytic properties. A remaining challenge is to anchor the single atoms individually on support materials via strong interactions. Herein, single atom Co sites have been developed on functionalized graphene by taking advantage of the strong interaction between Co2+ ions and the nitrile group of cyanographene. The potential of the material, which is named G(CN)-Co, as a SAC is demonstrated using the electrocatalytic hydrazine oxidation reaction (HzOR). The material exhibits excellent catalytic activity for HzOR, driving the reaction with low overpotential and high current density while remaining stable during long reaction times. Thus, this material can be a promising alternative to conventional noble metal-based catalysts that are currently widely used in HzOR-based fuel cells. Density functional theory calculations of the reaction mechanism over the material reveal that the Co(II) sites on G(CN)-Co can efficiently interact with hydrazine molecules and promote the N-H bond-dissociation steps involved in the HzOR. (C) 2021 Wiley-VCH GmbH

Název v anglickém jazyce

Single Co-Atoms as Electrocatalysts for Efficient Hydrazine Oxidation Reaction

Popis výsledku anglicky

Single-atom catalysts (SACs) have aroused great attention due to their high atom efficiency and unprecedented catalytic properties. A remaining challenge is to anchor the single atoms individually on support materials via strong interactions. Herein, single atom Co sites have been developed on functionalized graphene by taking advantage of the strong interaction between Co2+ ions and the nitrile group of cyanographene. The potential of the material, which is named G(CN)-Co, as a SAC is demonstrated using the electrocatalytic hydrazine oxidation reaction (HzOR). The material exhibits excellent catalytic activity for HzOR, driving the reaction with low overpotential and high current density while remaining stable during long reaction times. Thus, this material can be a promising alternative to conventional noble metal-based catalysts that are currently widely used in HzOR-based fuel cells. Density functional theory calculations of the reaction mechanism over the material reveal that the Co(II) sites on G(CN)-Co can efficiently interact with hydrazine molecules and promote the N-H bond-dissociation steps involved in the HzOR. (C) 2021 Wiley-VCH GmbH

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21000 - Nano-technology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Small

ISSN

1613-6810

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

2006477

Kód UT WoS článku

000634572300001

EID výsledku v databázi Scopus

2-s2.0-85103370758