Dual-step air-thermal treatment for facile conversion of PET into porous carbon particles with enhanced dye adsorption performance

摘要: Abstract Here we report a facile two-step strategy for the conversion of waste polyethylene terephthalate (PET) into nanostructured porous carbon particles with external sizes up to tens micrometers, high surface area 644 m2/g and an electrical conductivity 37 S/m, providing unique properties dye adsorption applications. The method is simple efficient, doesn't require hazardous/expensive chemicals that are often used in preparation materials. process based on carbonization PET at 900 °C followed by thermal activation step 500 °C air. Various phenomena, including structural modification graphitization products upon investigated X-ray diffraction (XRD) Raman spectroscopy, as well electron microscopy measurements. Graphitization PET-derived carbons initiates temperature 700 °C, sharply increases 900 °C, relatively value. adapted controlled oxidation particles, without use toxic which purposes. This provides efficient technique prepare highly adsorbents remove dyes from water resources.