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Rational Functionalization Towards Redox‐Active TEMPO Stable Free‐Radical‐Hydrochar Composites
Author(s) -
Patrinoiu Greta,
CalderonMoreno Jose M.,
Somacescu Simona,
Musuc Adina M.,
Spataru Tanta,
Ionita Petre,
Carp Oana
Publication year - 2021
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202100100
Subject(s) - radical , redox , surface modification , chemistry , nucleation , covalent bond , chemical engineering , materials science , organic chemistry , engineering
Although both stable free organic radicals and biomass‐derived hydrochars have emerged as appealing, green, multifunctional materials, their association has not been explored. In this study, strength is found to lie in their union, which primarily leads to stable redox‐active free‐radical‐hydrochar composites that can generate unexpected opportunities for the development of advanced metal‐free sustainable materials. The composites are obtained by a straightforward green one‐pot hydrothermal procedure. The loading of stable free radicals of nitroxide type and their localization is engineered by the nature of the carbohydrate and the reaction status; vigorous reaction parameters promote faster nucleation and growth kinetics of the hydrochar products, leading to a covalent immobilization of redox species on the surface of the carbonaceous microspherical aggregates. The nitroxide free‐radical‐hydrochar materials demonstrate enhancements in terms of both electrocatalytic activity and capacitive features.