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From ashes to porous hierarchical nanocarbon electrode: Upcycling secondary waste materials through self-catalytic chemical vapour deposition
Abstract
Metal and metal oxide particles are abundant in various ash-based wastes. Utilizing these as catalyst sources for the fabrication of carbon nanomaterials could present a valuable approach to reduce our reliance on non-renewable and costly catalyst sources, thereby facilitating large-scale nanomaterial production. In this context, secondary waste materials (SWMs) are by-products resulting from the (complete or partial) combustion of carbon-rich sources or other industrial processes, the disposal of which poses a serious environmental problem. In this study, we demonstrate a novel strategy to upcycle SWMs as catalysts, as received, for the growth of carbon nanoarchitectured electrodes through microwave plasma-enhanced chemical vapour deposition (MPECVD), without the need for functionalization. Firstly, 10 SWMs were selected to fabricate porous hierarchical nanocarbon (PHN) electrodes by phase-inversion and subsequent catalytic MPECVD growth. Secondly, distinct growth conditions, both in the presence and absence of CH4 as an external carbon source were applied, resulting in conductive electrodes, on which acetaminophen oxidation was performed. Results show that not all SWMs, despite originating from similar processes, work as a catalyst. In particular, principal component analysis suggests the presence of calcium oxosilicate and calcium‑magnesium‑iron carbonate as potential catalysts, which are present in two SWMs. Contrary to what expected, the occurrence of metals, such as Fe, Ni, is not a sufficient factor for the catalytic growth of carbon nanostructure. Interestingly, water vapour adsorption isotherms suggest the formation of different porous networks according to the specific SWMs. Finally, the development of waste-derived catalysts fosters the concept of upcycling, converting waste into higher-value products, thus closing the loop on resource utilization and minimizing waste generation.
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Authors (9)
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Karol Szczodrowski
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Chiara Giosuè
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Gianni Barucca
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Maria Letizia Ruello
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.susmat.2024.e00933
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Sustainable Materials and Technologies
no. 40,
ISSN: 2214-9937 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Głowacki M., Karpienko K., Wróbel M., Szczodrowski K., Giosuè C., Barucca G., Ruello M. L., Bogdanowicz R., Pierpaoli M.: From ashes to porous hierarchical nanocarbon electrode: Upcycling secondary waste materials through self-catalytic chemical vapour deposition// Sustainable Materials and Technologies -Vol. 40, (2024), s.e00933-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.susmat.2024.e00933
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
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