Spatially Separated Molecular Activation Over Dual Sites in Sn-Doped ZnGa₂O₄/SnO₂ Photocatalysts Toward Complete VOCs Mineralization.

ABSTRACT: Photocatalysis holds great promise for air pollutant remediation; however, its efficiency is often limited by charge recombination and humidity interference. Herein, Sn-doped ZnGa₂O₄ loaded SnO₂ nanoparticles (SZGO) is in situ constructed via a one-step hydrothermal method. The doped Sn atoms act as electron-trapping centers and form interfacial Sn─O channels between ZnGa₂O₄ and SnO₂, enabling directional electron migration. Hydrophilic ZnGa₂O₄ domains selectively adsorb H₂O, generating hydroxyl radicals (·OH) that facilitate aromatic ring cleavage, while electron-rich SnO₂ domains activate O₂ to produce superoxide (·O₂ ^-) and singlet oxygen (¹

SUBMITTER: Hu X 

PROVIDER: S-EPMC12561370 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature