Fabrication of Screen-Printed Electrodes Modified by Hydrothermal MnO₂ Microflowers and Carbon for Electrochemical Sensors in Copper Ions Detection

Table 1

Comparison of the MnO₂/SP-modified SPEs and other previously reported electrodes for electrochemical detection of Cu (II).

Electrodes	Method	Sensitivity	LOD (μM)	Reference
Fe-OSA/GCE	SWASV	0.909 μA/μM	0.0878	[37]
NH2-CMS/GCE	SWASV	5.791 μA/μM	0.011	[38]
Alk-Ti3C2/GCE	SWASV	20.59 μA/μM	0.032	[39]
GO/MnO2/GCE	SWASV	63.93 μA/μM	0.0017	[28]
MnO2@RGO/GCE	SWASV	—	0.0002	[29]
MnO2/Ni foam	SWASV	59.5 μA/μM	0.17	[20]
MnO2/SP/SPEs	SWASV	214.05 μA/cm^2 nM	0.0005	This study