Selenium doping-regulated synergistic effects in piezo-photocatalysis for enhanced hydrogen peroxide production and organic pollutant degradation over g-C3N4-based catalysts

2026-08-09

PRE

Hongcheng Gao *

Mengchen Fang

Jingru Wang

Nan Li

Yi Han

Jinyu Luo

Bei Liu

Yi Wang

Fasong Li

Dejin Wang *

DOI：10.1016/j.cej.2026.180522

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• Ultrathin g-C3N4 nanosheets with selenium doping were successfully prepared. • Se doping induces defects to break g-C3N4symmetry, boosting polarization field and charge separation-transfer • Remarkable piezo-photocatalytic H2O2 production and organic water pollutant degradation was achieved. • Piezo-photocatalytic mechanism was revealed by in situ-EPR, in situ-DRIFTS, and DFT.

Keywords:

g-C3N4

Selenium doping

piezo-photocatalysis

H2O2

Wastewater treatment

Selenium doping-regulated synergistic effects in piezo-photocatalysis for enhanced hydrogen peroxide production and organic pollutant degradation over g-C3N4-based catalysts

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