Plastic recycling in the Nordics: A value chain market analysis

Porous Carbon Nanosheets Prepared from Plastic Wastes for Supercapacitors

“…First, the as-prepared Mg(OH) 2 sheets are used as the hard templates for preparing PCNs and N-PCNs. PCNs are prepared by carbonizing the mixture of Mg(OH) 2 sheets and PS directly.…”

“…Then, the PCNs are obtained after removing the templates. In order to improve the physical and electrochemical properties of PCNs further, the templates of Mg(OH) 2 sheets are modified by CoZn-ZIFs nanocrystals for preparation of N-PCNs. In this process, the surface of Mg(OH) 2 sheets are functionalized with PVP molecules by thorough ultrasonic treatment.…”

“…In order to improve the physical and electrochemical properties of PCNs further, the templates of Mg(OH) 2 sheets are modified by CoZn-ZIFs nanocrystals for preparation of N-PCNs. In this process, the surface of Mg(OH) 2 sheets are functionalized with PVP molecules by thorough ultrasonic treatment. The amide carbonyl groups of PVP can be coordinated with Co and Zn ions 25,26 which promote the growth of CoZn-ZIF crystals on Mg(OH) 2 sheets and the product termed Mg(OH) 2 @-CoZn-ZIFs.…”

“…Preparation of Mg(OH) 2 and Mg(OH) 2 @CoZn-ZIFs Sheets A 0.2-g sample of MgO rods reacted with water for 3 h, and then Mg(OH) 2 sheets were collected by centrifugation and dried at 60°C. A 0.32-g sample of the as-prepared Mg(OH) 2 sheets and 1.58 g of PVP was dispersed in 40 mL methanol by sonication and stirring.…”

“…As a common type of waste plastic, PS is selected as the carbon precursor. Zn 2 converts to magnesia (MgO), which helps to convert the gas-phase carbon precursors derived from PS decomposition into carbon framework. The nitrogen is introduced into the carbon material in situ by means of pyrolysis of imidazole ligands, and the evaporation of Zn leads to a high surface area.…”