POS5-0241
Polymeric carbon nitrides produced from different gaseous conditions and their photocatalytic performance for degrading organic pollutants
When and Where
Nov 30, -0001
00:00 - 00:00
Presenter(s)
Yongwoo KIM (Inha University NanoMaterialChemistryLab)
Co-Author(s)
Abstract
Polymeric carbon nitride (p-C3N4) has attracted considerable attention as a metal-free photocatalyst for various environmental and energy-related reactions. p-C3N4 can be synthesized by thermal polycondensation of nitrogen-rich organic precursors, and its morphological and chemical properties are strongly affected by the reaction atmosphere during the condensation process. In this study, urea-derived polymeric carbon nitride was prepared by heat treatment of urea under two different gaseous conditions: air and N2. The resulting samples were denoted as UCN-A and UCN-N, respectively.
Both UCN-A and UCN-N exhibited mesoporous structures and showed visible-light-driven photocatalytic activity toward the degradation of rhodamine B, a representative organic pollutant. Notably, UCN-A displayed higher photocatalytic performance than UCN-N. Structural and surface analyses revealed that the improved activity of UCN-A originated from its more developed porous structure and larger specific surface area. These features can provide more accessible active sites and facilitate the interaction between the photocatalyst and pollutant molecules during the photocatalytic reaction.
These results demonstrate that controlling the gaseous atmosphere during the thermal polycondensation of urea is an effective strategy for tuning the structure of p-C3N4 and enhancing its photocatalytic performance.
Both UCN-A and UCN-N exhibited mesoporous structures and showed visible-light-driven photocatalytic activity toward the degradation of rhodamine B, a representative organic pollutant. Notably, UCN-A displayed higher photocatalytic performance than UCN-N. Structural and surface analyses revealed that the improved activity of UCN-A originated from its more developed porous structure and larger specific surface area. These features can provide more accessible active sites and facilitate the interaction between the photocatalyst and pollutant molecules during the photocatalytic reaction.
These results demonstrate that controlling the gaseous atmosphere during the thermal polycondensation of urea is an effective strategy for tuning the structure of p-C3N4 and enhancing its photocatalytic performance.
