Biomass-derived carbon nano-onions for the effective elimination of organic pollutants and oils from water

Ecologically viable carbon nano-onions for the efficient removal of methyl orange azo dye and its environmental assessment

“…CNOs were synthesized by flame pyrolysis using waste fried oil as a carbon precursor, which could be burned using a cotton wick. 24,37 A glass beaker was inverted over the flame in a suitable air environment to collect carbon soot, which was then annealed at 500 °C for 2 hours in a muffle furnace with a heating rate of 5 °C per minute. The resulting CNOs were produced sustainably through a straightforward synthesis process, requiring no additional modification for the removal of MO azo dye.…”

Adsorptive Removal of Nitrophenols from Water by Biomass-Derived Carbon Nano-Onions

“…The adsorption capacity (mg g –1 ) of CNOs for 2-NP, 3-NP, and 4-NP was found to be significantly higher than that of previously reported materials, as indicated in Table S1. The admirable performance can be ascribed to the distinctive morphology of CNOs, offering an enhanced surface area, more surface-active sites, and more π-electron regions . From the synthesis point of view, the reported materials, listed in the above-mentioned table, need a lot of chemicals during synthesis or activation, but in the case of CNOs, no chemicals or further modification/activation is needed.…”

Nanocarbon-based sensors for the structural health monitoring of smart biocomposites

“…69 In addition, the production methods may have lower energy requirements compared to traditional methods, contributing to reduced environmental impact. 70–73 Sustainable nanocarbons can be easily tailored based on the specific features of the biomass source, providing a precise control over the material's properties. 74–76…”