Understanding the intermediates and carbon dioxide adsorption of potassium chloride-incorporated graphitic carbon nitride with tailoring melamine and urea as precursors.

In this study, we demonstrated the synthesis of potassium chloride (KCl)-incorporated graphitic carbon nitride, (g-CN, CN) with varying amounts of N-vacancies and pyridinic-N as well as enhanced Lewis basicity, via a single-step thermal polymerization by tailoring the precursors of melamine and urea for carbon oxide (CO) capture. Melamine, as a precursor, undergoes a phase transformation into melam and triazine-rich g-CN, whereas the addition of urea polymerizes the mixture to form melem and heptazine-rich g-CN (CN11). Owing to the abundance of pyridinic-N and the high surface area, CN11 adsorbed higher amounts of CO (44.

Ag-modified TiO/SiO/FeO sphere with core-shell structure for photo-assisted reduction of 4-nitrophenol.

Nitrogen-containing contaminants, such as 4-nitrophenol (4-NP), cause detrimental effects when discharged into the environment and thus should be reduced or removed from ecosystems. In this study, an Ag-loaded TiO-SiO-FeO (TSF) with a core-shell structure was employed for the photo-assisted reduction of 4-NP. FeO, SiO, and TiO in the core-shell structure served as a magnetic center, protective layer, and light absorber, respectively.

Adsorption mechanism of emerging and conventional phenolic compounds on graphene oxide nanoflakes in water.

Emerging contaminants (ECs) such as bisphenol A (BPA), 4-nonylphenol (4-NP) and tetrabromobisphenol A (TBBPA) have gained immense attention worldwide due to their potential threat to humans and environment. Graphene oxide (GO) nanomaterial is considered as an important sorbent due to its exceptional range of environmental application owing to its unique properties. GO was also considered as one of ECs because of its potential hazard.