Composite materials based on MnO2 deposits functionalized with graphitic carbon nitride (gCN) nanostructures are promising (photo)electrocatalysts for oxygen evolution reaction (OER). Besides the individual properties of the two electrode components, mutual interactions at their interface can also exert a significant influence on functional performances. In this work, MnO2 deposits are synthesized by plasma enhanced-chemical vapor deposition on Ni foam supports and subsequently decorated with two different forms of carbon nitride via electrophoretic deposition. Structural and morphological analyses revealed the formation of β-MnO2 2D structures hierarchically assembled into flowerlike architectures, whose surface appeared decorated by 3D particles built up from gCN nanoflakes. Based on the intimate contact between the two semiconductors, an effective electronic and chemical coupling was established at their interface. In the following, we report on a comparative XPS characterization of a bare MnO2 electrode material and of two MnO2-gCN composite systems prepared from different carbon nitride powders. Survey spectra as well as detailed scans for C 1s, N 1s, O 1s, and Mn 2p regions are presented and critically discussed.
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December 2023
Research Article|
August 29 2023
XPS investigation of MnO2 deposits functionalized with graphitic carbon nitride
Mattia Benedet
;
Mattia Benedet
(Data curation, Methodology, Validation, Visualization)
1
Department of Chemical Sciences, Padova University and INSTM
, 35131 Padova, Italy
2CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
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Alberto Gasparotto
;
Alberto Gasparotto
a)
(Data curation, Formal analysis, Investigation, Methodology, Writing – original draft)
1
Department of Chemical Sciences, Padova University and INSTM
, 35131 Padova, Italy
2CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
a)Author to whom correspondence should be addressed: alberto.gasparotto@unipd.it
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Gian Andrea Rizzi
;
Gian Andrea Rizzi
(Data curation, Investigation, Visualization)
1
Department of Chemical Sciences, Padova University and INSTM
, 35131 Padova, Italy
2CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
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Chiara Maccato
;
Chiara Maccato
(Formal analysis, Funding acquisition, Methodology, Supervision, Visualization, Writing – review & editing)
1
Department of Chemical Sciences, Padova University and INSTM
, 35131 Padova, Italy
2CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
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Davide Mariotti
;
Davide Mariotti
(Resources, Supervision, Writing – review & editing)
3
School of Engineering, Ulster University
, 2-24 York Street, Belfast BT15 1AP, United Kingdom
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Ruairi McGlynn
;
Ruairi McGlynn
(Investigation, Software, Validation, Writing – review & editing)
3
School of Engineering, Ulster University
, 2-24 York Street, Belfast BT15 1AP, United Kingdom
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Davide Barreca
Davide Barreca
(Conceptualization, Formal analysis, Funding acquisition, Supervision, Writing – review & editing)
2CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
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a)Author to whom correspondence should be addressed: alberto.gasparotto@unipd.it
Surf. Sci. Spectra 30, 024018 (2023)
Article history
Received:
May 11 2023
Accepted:
July 27 2023
Citation
Mattia Benedet, Alberto Gasparotto, Gian Andrea Rizzi, Chiara Maccato, Davide Mariotti, Ruairi McGlynn, Davide Barreca; XPS investigation of MnO2 deposits functionalized with graphitic carbon nitride. Surf. Sci. Spectra 1 December 2023; 30 (2): 024018. https://doi.org/10.1116/6.0002827
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