Table 1.

Comparison of performance of CNCs/Zn-TPP/GCE for catechol (CC) and hydroquinone (HQ).

S. no	Electrode	Limit of detection (LOD)		Linear range		References
		CC	HQ	CC	HQ
1	ECF-CPEa	0.2 µM	0.4 µM	1–200 µM	1–200 µM	66
2	MIL-101 (Cr)-rGOb	4 µM	0.66 µM	10–1400 µM	4–1000 µM	67
3	EGr-TPyP/GCc	3.3 × 10–7 M	–	10–6–10–4 M	–	65
4	CdTe QDs/GRd	18.28 µM	–	30–1000 μM	–	68
5	Co3O4/MWCNTs/GCE	8.5 μM	5.6 μM	10–700 μM	10–800 μM	69
6	MWCNTs/p-DAN/GCEe	1.0 × 10−8 M		2.0 × 10−8–1.3 × 10−4 M		70
7	Co3O4@carbon core/shell nanostructure	0.03 μM	0.03 μM	0.6–116.4 μM	0.8 – 127.1 μM	71
8	GO@PDA–AuNPs/GCEf	15 nM	–	0.3–67.55 μM	–	72
9	CNCs/Zn-TPP/GCEg	0.9 μM	1.5 μM	25–1500 µM	25–1500 µM	Present work

^aECF-CPE: Electrospun Carbon Nanofiber-Carbon paste electrode.

^bMIL-101 (Cr)-rGO: Metal organic framework-reduced graphene oxide.

^cEGr-TPyP/GC: Electrochemically exfoliated graphene-tetrapyridylporphyrin/Glassy carbon electrode.

^dCdTe QDs/GR: Cadmium Telluride Quantum dots/Graphene.

^eMWCNTs/p-DAN/GCE: Multi-walled carbon nanotubes/poly(1,5-diaminonaphthalene) composite film modified electrode.

^fGO@PDA–AuNPs/GCE: Gold nanoparticles decorated graphene oxide@polydopamine composite.

^gCNCs/Zn-TPP/GCE: Carbon Nanocoils/Zinc-tetraphenylporphyrin/Glassy carbon electrode.