Light-Gated Thermal Domains in Nano-Lanterns: Confined Heat Hotspots Sparks Electron Localization for Water Purification.

ABSTRACT: Peroxyacetic acid (PAA) oxidation technology receives widespread concerns for water purification with minimal secondary pollution. Conventional heat-driven PAA activation generally wastes energy during solution heating. In this study, "light-gated thermal domains" concept is developed in a hollow porous carbon nanosphere (HPCS), and the confined heat hotspots lead to a higher temperature (80 °C) in the internal space than in the solution (40 °C). This endows the HPCS with exceptional redox capacity, optical response, and electron transfer capability. The degradation efficiency of sulfadiazine in the HPCS+PAA catalytic system reached more than 98% within 90 min of irradiation, with a reaction rate constant 11 times higher than that in the non-confined system. The "light-gated thermal domain

SUBMITTER: Fang M 

PROVIDER: S-EPMC12806286 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature