General, Metal‐free Synthesis of Carbon Nanofiber Assemblies from Plant Oils

Abstract

We designed am etal-free synthesis of carbon nanofiber based on ketene chemistry using phosphorus pentoxide (P 2 O 5 )a nd vegetable oil. Based on the characterization of intermediates,P 2 O 5 -oil reaction yielded most possibly alkylketenes,w hich polymerized into poly(ketene) with abundant enol groups.T he enol groups further reacted with P 2 O 5 , forcing the poly(ketene) to assemble into an ano-sized preassembly structure.M oderate heating transforms these structures into carbonaceaus nanofibers.T his approachi s applicable to other chemicals with similar structure to vegetable oil. The carbon nanofibers with P-O-C functionalization show relatively high graphitization degree and promising textural properties.T he C-O-P environment accounts for 66 at %o ft he total Pand creates as uperior thermal stability. As am odel application, aC DI system built of ac arbonnanofiber-based electrode countered by an activated carbonbased electrode exhibited exceptional performance.

Investigation of the viable role of oil sludge-derived activated carbon for oily wastewater remediation

“…Activated carbon is a solid neutral adsorbent material that is generally can be used to separate various pollutants from water and gases (Shukla, 2021). Activated carbon is one of the most applicable porous materials, which has received much attention in the adsorption and wastewater purification processes (Hamta et al, 2021;Zhang et al, 2021). The advantages of the activated carbon, including high flexibility, and high adsorption and desorption rate, have caused a lot of research in the field of process optimization and industrialization (Mariana et al, 2021).…”