PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution
Authors
Rakočević, Lazar
Stojković Simatović, Ivana

Maksić, Aleksandar

Rajić, Vladimir

Štrbac, Svetlana

Srejić, Irina

Article (Published version)
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PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown
remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution.
SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform
in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of
graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were
0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO
was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial
potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This
was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement
performed for 40 min for hydrogen evolution at a constant potential indicated good stability and
durability of the PtAu/rGO electrode.
Keywords:
platinum / gold / PtAu nanoparticles / graphene / SEM / XPS / hydrogen evolutionSource:
Catalysis, 2022, 12, 43, 2-13Funding / projects:
- This research was funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia.
DOI: 10.3390/catal12010043
ISSN: 2073-4344
WoS: 000749504600001
Scopus: 2-s2.0-85122024529
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IHTMTY - JOUR AU - Rakočević, Lazar AU - Stojković Simatović, Ivana AU - Maksić, Aleksandar AU - Rajić, Vladimir AU - Štrbac, Svetlana AU - Srejić, Irina PY - 2022 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5292 AB - PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution. SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were 0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement performed for 40 min for hydrogen evolution at a constant potential indicated good stability and durability of the PtAu/rGO electrode. T2 - Catalysis T1 - PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution VL - 12 IS - 43 SP - 2 EP - 13 DO - 10.3390/catal12010043 ER -
@article{ author = "Rakočević, Lazar and Stojković Simatović, Ivana and Maksić, Aleksandar and Rajić, Vladimir and Štrbac, Svetlana and Srejić, Irina", year = "2022", abstract = "PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution. SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were 0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement performed for 40 min for hydrogen evolution at a constant potential indicated good stability and durability of the PtAu/rGO electrode.", journal = "Catalysis", title = "PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution", volume = "12", number = "43", pages = "2-13", doi = "10.3390/catal12010043" }
Rakočević, L., Stojković Simatović, I., Maksić, A., Rajić, V., Štrbac, S.,& Srejić, I.. (2022). PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution. in Catalysis, 12(43), 2-13. https://doi.org/10.3390/catal12010043
Rakočević L, Stojković Simatović I, Maksić A, Rajić V, Štrbac S, Srejić I. PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution. in Catalysis. 2022;12(43):2-13. doi:10.3390/catal12010043 .
Rakočević, Lazar, Stojković Simatović, Ivana, Maksić, Aleksandar, Rajić, Vladimir, Štrbac, Svetlana, Srejić, Irina, "PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution" in Catalysis, 12, no. 43 (2022):2-13, https://doi.org/10.3390/catal12010043 . .