Table 2.

Recent reports on g-C₃N₄-based sensors for organic pollutants.

Analyte	Method	Linear Range (nM)	LOD (nM)	Materials	Ref
4-NP	LSV	1600–50,000	1 000	BSO–gCN	[68]
4-NP	DPV	3.3–313	0.075	OX-g-C3N4	[69]
TBBPA	DPV	1–30	0.4	PDDC–g-C3N4	[70]
BPA	PEC	35–280	12	Cu/g-C3N4	[71]
BPA	ECL	0.001–1	0.00003	C–g-C3N4	[72]
PCP	ECL	10−8–10−4	10−8	g-C3N4/graphene	[74]
HQ	CV	1000–320,000	300	AuNPs@g-C3N4	[75]
4-NT	CV	1000–10,000	100	ZnO/g-C3N4	[76]

BSO–gCN—barium stannate-graphitic carbon nitride; OX-g-C₃N₄—oxidized graphitic carbon nitride; PDDC–g-C₃N₄—poly(diallyl dimethylammonium chloride)-graphitic carbon nitride; ECL—electrochemiluminescence; C–g-C₃N₄—carboxylated graphitic carbon nitride; HQ—hydroquinone; CC—catechol; 4-NT-4—nitrotoluene.