articleACS CatalysisJul 22, 2025Closed access

Biochar-Tailored Carbon Nitride Enables Piezo-Photocatalytic H 2 O 2 Production via Boosted Charge Transport

State Forestry and Grassland Administration · Fujian Agriculture and Forestry University · +3 more institutions

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Abstract

Piezo-photocatalytic systems enable efficient H2O2generation, presenting a promising mechanical-energy-to-chemical-energy conversion pathway. However, limitations, including insufficient polarization efficiency and poor directional charge transfer, persist in current piezoelectric semiconductors, constraining the photocatalytic performance. Here, we develop a biochar-tailored method to fabricate PCCN-x, a modified carbon nitride nanosheet incorporating nitrogen defects and carbon bridges, which demonstrates high efficiency in piezo-photocatalytic H2O2 generation. Experimental and theoretical analyses reveal that introducing nitrogen defects together with carbon incorporation creates an asymmetric configuration…

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