Mechanistic and practical insights into tetracycline degradation via 2D/2D N-doped biochar/carbon nitride-driven peroxymonosulfate activation: Toxicity mitigation and product analysis.

In this study, a rationally designed 2D/2D composite from N-doped biochar (NC) and S-doped graphitic carbon nitride (CNS) was developed for efficient peroxymonosulfate (PMS) activation toward tetracycline (TC) degradation. Peanut shell-derived NC produced via urea treatment showed both excellent conductivity and an advantageous 2D structural configuration. The strategic incorporation of NC within the CNS matrix to engineer 2D/2D architectures significantly enhances interfacial contact while establishing efficient electron transport pathways, thereby optimizing charge carrier dynamics through improved mobility and separation efficiency.

Rapid Charge Transfer Endowed by Heteroatom Doped Z-Scheme Van Der Waals Heterojunction for Boosting Photocatalytic Hydrogen Evolution.

Constructing heterojunctions between phase interfaces represents a crucial strategy for achieving excellent photocatalytic performance, but the absence of sufficient interface driving force and limited charge transfer pathway leads to unsatisfactory charge separation processes. Herein, a doping-engineering strategy is introduced to construct a In─N bond-bridged InS nanocluster modified S doped carbon nitride (CN) nanosheets Z-Scheme van der Waals (VDW) heterojunctions (InS/CNS) photocatalyst, and the preparation process just by one-step pyrolysis using the pre-coordination confinement method. Specifically, S atoms doping enhances the bond strength of In─N and forms high-quality interfacial In─N linkage which serves as the atomic-level interfacial "highway" for improving the interfacial electrons migration, decreasing the charge recombination probability.