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[Display omitted] • The surface asymmetric site of C = O was created into carbon material CNOR15. • The CNOR15 can degrade 100% tetracycline with 49-fold kinetics enhancements. • This activity is ascribed to C = O forcing PMS decomposition for ROSs generation. Peroxymonosulfate (PMS) activation by the carbonaceous-based materials for degrading antibiotics is a recent emerging hotspot in water environment restoration. Herein, a triazine carbon material is prepared by urea thermal condensation follwed by water-mediated oxidation. The optimized triazine carbon material (CNOR 15) can degrade around 100 % of tetracycline within 6 mins, thus pseudo-first-order kinetic constant (k obs) enhances approximately 49 folds compared to pristine carbon material. Experiments and characterizations demonstrate non-radical reactive species of 1O 2 plays a crucial role in CNOR 15 /PMS system to eliminate tetracycline, in which performs at an asymmetric C = O site on the edge of triazine motief. Electron paramagnetic resonance and trapping tests comfirm the novel mechanism of electron conduction from sp/sp2-hybrdized triazine to C = O prompting PMS decomposition for 1O 2 generation. Ex-situ argon sputtering XPS technology solidly unveils a underlysing linear corelation between catalysis activity and content of carbonyl-constructed assymetric sites. In addition, membranoid CNOR 15 /PVDF removes ca. 90 % tetracycline at a rate of 100 mL·min−1 in a continuous flow-cell device, exhibiting a promising application in the practical wastewater purification. Our work emphasized a significance of asymmetric site regulation of carbonaceous materials towards PMS activation for environmental remediation. [ABSTRACT FROM AUTHOR]