Chitosan pyrolysis in the presence of a ZnCl2/NaCl salts for carbons with electrocatalytic activity in oxygen reduction reaction in alkaline solutions

Maria K. Kochaniec; Marek Lieder

doi:10.1038/s41598-024-72411-1

Chitosan pyrolysis in the presence of a ZnCl2/NaCl salts for carbons with electrocatalytic activity in oxygen reduction reaction in alkaline solutions

Abstrakt

The one-step carbonization of low cost and abundant chitosan biopolymer in the presence of salt eutectics ZnCl2/NaCl results in nitrogen-doped carbon nanostructures (8.5 wt.% total nitrogen content). NaCl yields the spacious 3D structure, which allows external oxygen to easily reach the active sites for the oxygen reduction reaction (ORR) distinguished by their high onset potential and the maximum turnover frequency of 0.132 e site−1 s− 1. Data show that the presence of NaCl during the synthesis exhibits the formation of pores having large specific volumes and surface (specific surface area of 1217 m2 g−1), and holds advantage by their pores characteristics such as their micro-size part, which provides a platform for mass transport distribution in three-dimensional N-doped catalysts for ORR. It holds benefit over sample pre-treated with LiCl in terms of the micropores specific volume and area, seen as their percentage rate, measured in the BET. Therefore, the average concentration of the active site on the surface is larger.

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Autorzy (2)

Maria K. Kochaniec
Marek Lieder dr hab. inż.
- Wydział Chemiczny
- Politechnika Gdańska

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Wersja publikacji: Accepted albo Published Version
DOI:: Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1038/s41598-024-72411-1
Licencja: otwiera się w nowej karcie

Słowa kluczowe

CARBONIZED CHITOSAN, SUSTAINABLE ENERGY, NANOSTRUCTURES, ORR ACTIVITY, MICROPOROSITY

Informacje szczegółowe

Kategoria:

Publikacja w czasopiśmie

Typ:

artykuły w czasopismach

Opublikowano w:

Scientific Reports nr 14,
ISSN: 2045-2322

Język:

angielski

Rok wydania:

2024

Opis bibliograficzny:

Kochaniec M. K., Lieder M.: Chitosan pyrolysis in the presence of a ZnCl2/NaCl salts for carbons with electrocatalytic activity in oxygen reduction reaction in alkaline solutions// Scientific Reports -Vol. 14,iss. 1 (2024),

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