Published: May 21, 2024

Hydrogen peroxide (H2O2) production via oxygen (O2) reduction reaction (ORR) in pure water (H2O) through graphitic carbon nitrides (g-C3N4)-based piezo-photocatalysts is an exciting approach many current studies. However, the low Lewis-acid properties of g-C3N4 limited catalytic performance because O2 adsorption efficacy. To overcome this challenge, we utilized interaction precursors with various solvents to synthesize g-C3N4, possessing multiple nitrogen-vacant species thermal shocking polymerization. Our results suggest that lack nitrogen and incident introduction oxygen-functional groups enhance Lewis acid-base interactions polarize lattices, leading enormous enhancement, roughly 7 times from optimal samples compared pristine piezo-photocatalysis. Meanwhile, also observed correlation between charge separation kinetic crystalline degree synthesized materials, which can elucidate how defects impacted outcomes. Furthermore, mechanisms were thoroughly studied, formation H2O2 proceeding radical oxidation pathways, roles light ultrasound carefully investigated. Thus, our findings not only reinforce potential view metal-free photocatalysts, accelerating understanding working principles generate based on reactions, but propose a facile one-step way for fabricating highly efficient scalable photocatalysts produce without using sacrificial agents, pushing practical application in-situ solar toward real-world scenarios.

Language: Английский