Electroreduction of oxygen on nitrogen-doped graphene oxide supported silver nanoparticles

Jonas Mart Linge; Heiki Erikson; Ave Sarapuu; Maido Merisalu; Mihkel Rähn; Leonard Matisen; Väino Sammelselg; Kaido Tammeveski

doi:10.1016/j.jelechem.2017.04.022

Electroreduction of oxygen on nitrogen-doped graphene oxide supported silver nanoparticles

Jonas Mart Linge, Heiki Erikson, Ave Sarapuu, Maido Merisalu, Mihkel Rähn, Leonard Matisen, Väino Sammelselg, Kaido Tammeveski

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Nitrogen-doped graphene oxide supported silver nanoparticles (Ag/NGO) have been synthesised using three different methods. The prepared catalysts were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemically tested for oxygen reduction reaction (ORR) in alkaline solution. The Ag/NGO catalysts prepared by borohydride reduction showed the least degree of nanoparticle agglomeration and the material which was prepared using ascorbic acid yielded the biggest Ag particles. XPS revealed that the nitrogen to carbon atomic ratio was about 0.07 and EDS mapping showed that nitrogen was uniformly distributed over the graphene. The ORR on all the Ag/NGO catalysts proceeded via 4-electron pathway yielding water while on the support material, N-doped graphene oxide, the number of electrons transferred per O₂ molecule was lower than four. The mass activity of all Ag/NGO catalysts was determined to be at least twice higher than that of NGO.

Original language	English
Pages (from-to)	197-203
Number of pages	7
Journal	Journal of Electroanalytical Chemistry
Volume	794
DOIs	https://doi.org/10.1016/j.jelechem.2017.04.022
State	Published - Jun 1 2017
Externally published	Yes

Keywords

Electrocatalysis
Graphene
Nitrogen doping
Oxygen reduction
Silver nanoparticles

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10.1016/j.jelechem.2017.04.022

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title = "Electroreduction of oxygen on nitrogen-doped graphene oxide supported silver nanoparticles",

abstract = "Nitrogen-doped graphene oxide supported silver nanoparticles (Ag/NGO) have been synthesised using three different methods. The prepared catalysts were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemically tested for oxygen reduction reaction (ORR) in alkaline solution. The Ag/NGO catalysts prepared by borohydride reduction showed the least degree of nanoparticle agglomeration and the material which was prepared using ascorbic acid yielded the biggest Ag particles. XPS revealed that the nitrogen to carbon atomic ratio was about 0.07 and EDS mapping showed that nitrogen was uniformly distributed over the graphene. The ORR on all the Ag/NGO catalysts proceeded via 4-electron pathway yielding water while on the support material, N-doped graphene oxide, the number of electrons transferred per O2 molecule was lower than four. The mass activity of all Ag/NGO catalysts was determined to be at least twice higher than that of NGO.",

keywords = "Electrocatalysis, Graphene, Nitrogen doping, Oxygen reduction, Silver nanoparticles",

author = "Linge, \{Jonas Mart\} and Heiki Erikson and Ave Sarapuu and Maido Merisalu and Mihkel R{\"a}hn and Leonard Matisen and V{\"a}ino Sammelselg and Kaido Tammeveski",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = jun,

day = "1",

doi = "10.1016/j.jelechem.2017.04.022",

language = "English",

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pages = "197--203",

journal = "Journal of Electroanalytical Chemistry",

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TY - JOUR

T1 - Electroreduction of oxygen on nitrogen-doped graphene oxide supported silver nanoparticles

AU - Linge, Jonas Mart

AU - Erikson, Heiki

AU - Sarapuu, Ave

AU - Merisalu, Maido

AU - Rähn, Mihkel

AU - Matisen, Leonard

AU - Sammelselg, Väino

AU - Tammeveski, Kaido

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Nitrogen-doped graphene oxide supported silver nanoparticles (Ag/NGO) have been synthesised using three different methods. The prepared catalysts were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemically tested for oxygen reduction reaction (ORR) in alkaline solution. The Ag/NGO catalysts prepared by borohydride reduction showed the least degree of nanoparticle agglomeration and the material which was prepared using ascorbic acid yielded the biggest Ag particles. XPS revealed that the nitrogen to carbon atomic ratio was about 0.07 and EDS mapping showed that nitrogen was uniformly distributed over the graphene. The ORR on all the Ag/NGO catalysts proceeded via 4-electron pathway yielding water while on the support material, N-doped graphene oxide, the number of electrons transferred per O2 molecule was lower than four. The mass activity of all Ag/NGO catalysts was determined to be at least twice higher than that of NGO.

AB - Nitrogen-doped graphene oxide supported silver nanoparticles (Ag/NGO) have been synthesised using three different methods. The prepared catalysts were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemically tested for oxygen reduction reaction (ORR) in alkaline solution. The Ag/NGO catalysts prepared by borohydride reduction showed the least degree of nanoparticle agglomeration and the material which was prepared using ascorbic acid yielded the biggest Ag particles. XPS revealed that the nitrogen to carbon atomic ratio was about 0.07 and EDS mapping showed that nitrogen was uniformly distributed over the graphene. The ORR on all the Ag/NGO catalysts proceeded via 4-electron pathway yielding water while on the support material, N-doped graphene oxide, the number of electrons transferred per O2 molecule was lower than four. The mass activity of all Ag/NGO catalysts was determined to be at least twice higher than that of NGO.

KW - Electrocatalysis

KW - Graphene

KW - Nitrogen doping

KW - Oxygen reduction

KW - Silver nanoparticles

UR - https://www.scopus.com/pages/publications/85018629154

U2 - 10.1016/j.jelechem.2017.04.022

DO - 10.1016/j.jelechem.2017.04.022

M3 - Article

AN - SCOPUS:85018629154

SN - 1572-6657

VL - 794

SP - 197

EP - 203

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Electroreduction of oxygen on nitrogen-doped graphene oxide supported silver nanoparticles

Abstract

Keywords

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