Design of bifunctional nitrogen-doped biochar with adsorption and catalytic oxidation capabilities for enhanced toluene emission control.

Volatile organic compounds (VOCs), such as toluene, are hazardous air pollutants that pose significant health and environmental risks. This study addresses remediation of toluene by developing a bifunctional nitrogen-doped biochar (NDB) activated with sodium hydroxide (NaOH), aimed at reducing toluene emissions through both adsorption and catalytic oxidation. A series of NDB samples were prepared via NaOH activation and pyrolysis at varying temperatures to optimize their adsorption capacity and catalytic performance.

Ultra-light poly(lactic acid)/SiO aerogel composite foam: A fully biodegradable and full life-cycle sustainable insulation material.

In this study, a fully biodegradable ultra-light poly(lactic acid)/silicon dioxide (PLA/SiO) aerogel nanocomposite with ultra-low thermal conductivity was successfully fabricated. PLA used was a produced from lactic acid, where the lactic acid has been produced from carbohydrates. The rheological properties of PLA were enhanced by diphenylmethane diisocyanate (MDI).

High performance of catalytic sheet filters of VO-WO/TiO for NO reduction.

Nitrogen oxide (NO) emissions in fuel from the stationary as well as from mobile sources primarily from power stations, industrial heaters, cogeneration plants, and diesel engines represent a major worldwide environmental problem. The selective catalytic reduction (SCR) of NO with NH over catalyst based on VO-WO/TiO (VWT) is the most effective benchmark technique to efficiently reduce NO emissions from stationary and mobile sources. Among the different transition metals (Mn, Nb, Co, Cr, Cu, Ce) used in current research work, the manganese could make up the loss of SCR activity caused by the decrease of VO loading (50%) in prepared VWT powder catalyst.