Biomass-Derived Nitrogen Functionalized Carbon Nanodots and Their Anti-Biofouling Properties - Publikacja - MOST Wiedzy


Biomass-Derived Nitrogen Functionalized Carbon Nanodots and Their Anti-Biofouling Properties


The prevalence of the antibiotic resistant bacteria remains a global issue. Cheap, sustainable and multifunctional antibacterial membranes are at the forefront of filtrating materials capable of treating multiple flow streams, such as water cleansing treatments. Carbon nanomaterials are particularly interesting objects shown to enhance antibacterial properties of composite materials. In this article, amino-functionalized, photoluminescent carbon nanodots (CNDs) were synthesized from chitosan by bottom-up approach via simple and green hydrothermal carbonization. A chemical model for the CNDs formation during hydrothermal treatment of chitosan is proposed. The use of urea as an additional nitrogen source leads to the consumption of hydroxyl groups of chitosan and higher nitrogen doping level as pyridinic and pyrrolic N-bonding configurations in the final carbonaceous composition. These functionalized carbon nanodots that consist of carbon core and various surface functional groups were used to modify the commercially available membranes in order to enhance their anti-biofouling properties and add possible functionalities, including fluorescent labelling. Incorporation of CNDs to membranes increased their hydrophilicity, surface charge without compromising membranes integrity, thereby increasing the factors affecting bacterial wall disruption. Membranes modified with CNDs effectively stopped the growth of two Gramnegative bacterial colonies: Klebsiella oxytoca (K. oxytoca) and Pseudomonas aeruginosa (P. aeruginosa).


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Opublikowano w:
Processes nr 9,
ISSN: 2227-9717
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Opis bibliograficzny:
Rybarczyk M., Gontarek-Castro E., Ollik K., Lieder M.: Biomass-Derived Nitrogen Functionalized Carbon Nanodots and Their Anti-Biofouling Properties// Processes -Vol. 9,iss. 1 (2021), s.61-
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.3390/pr9010061
Politechnika Gdańska

wyświetlono 110 razy

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