Electroanalytical Sensing of Bromides Using Radiolytically Synthesized Silver Nanoparticle Electrocatalysts

Table 3

Comparison of performance of different electrodes for bromide sensing.

Catalyst	Electrolyte	Peak current/μA	Peak potential/V	LOD
Ag (present catalyst)	0.25 mM KBr + 0.1 M K2SO4	310	0.01	18 μM
Ag112/C (present catalyst)	0.25 mM KBr + 0.1 M K2SO4	446	0.16	53 μM
Ag114/C (present catalyst)	0.25 mM KBr + 0.1 M K2SO4	704	0.21	36 μM
Ag116/C (present catalyst)	0.25 mM KBr + 0.1 M K2SO4	390	0.09	40 μM
Ag214/C (present catalyst)	0.25 mM KBr + 0.1 M K2SO4	317	0.02	102 μM
AgNP-GC– [8]	0.16 mM KBr + 0.1 M K2SO4	≈15	≈0.14	3 μA
Ag/Au/PdNP-GC– [8]	0.16 mM KBr + 0.1 M K2SO4	≈25	≈0.18	/
Ag electrode [22]	2 mM bromide ions in pH 7 phosphate buffer	/	≈0	5 mM
Hg (II) [23]	/	/	/	4 μM
MWNTs-chitosan modified; [24]	gmL^−1 bromide ions in pH 1.8 H2SO4 solution	≈78	0.71	9.6⋅10^−8 g ml^−1
GCM-Ag/MWCNT/ [25]	5 mM bromide ions in 0.1 M phosphate buffer	≈750	≈0.1	22 μM

NP-GC–BPPG: nanoparticles on glassy carbon spherical powder with basal plane pyrolytic graphite electrode, Hg(II) complex containing carbon paste electrode, MWNT: multiwall carbon nanotubes, GCE: glassy carbon electrode, GCM: glassy carbon metal, and MWCNT: multiwall carbon nanotube.